Home > Products > Valid Products > AFD

000
FXUS65 KVEF 202229
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
229 PM PST SAT DEC 20 2014

.SYNOPSIS...MOSTLY CLOUDY CONDITIONS WILL CONTINUE THROUGH TONIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE SOUTHERN GREAT BASIN
MOUNTAINS. HIGH PRESSURE OFF THE CALIFORNIA COAST WILL KEEP THE AREA
DRY AND MILD SUNDAY THROUGH CHRISTMAS EVE...THEN A STORM SYSTEM WILL
PASS NEAR THE AREA CHRISTMAS DAY AND USHER IN A ANOTHER ROUND OF
COOLER TEMPERATURES FOR THE END OF THE WEEK.
&&

.DISCUSSION...HIGH PRESSURE DEVELOPING OFF THE WEST COAST AND A
DIRTY NORTHERLY FLOW ALOFT WILL CONTINUE TO SPREAD CLOUDS ACROSS THE
REGION THROUGH SUNDAY MORNING. A SLIGHT CHANCE OF SHOWERS REMAINS
OVER THE FAR NORTHERN CWA MOUNTAINS INTO EARLY SUNDAY WITH ONLY VERY
LIGHT ACCUMULATIONS EXPECTED. THE THICKER CLOUD SHIELD SHOULD PUSH
EAST OF THE AREA SUNDAY AFTERNOON ALLOWING MORE SUNSHINE AND WARMER
CONDITIONS TO RETURN FOR MUCH OF THE AREA. HOWEVER WITH LIGHT WINDS
EXPECTED SUNDAY, HIGH TEMPERATURES IN SOME VALLEY LOCATIONS COULD
STRUGGLE TO REACH FORECASTED HIGHS.

THE FIRST HALF OF NEXT WEEK...THROUGH CHRISTMAS EVE...WILL BE
DOMINATED BY HIGH PRESSURE OFF THE COAST AND WARMER THAN NORMAL
CONDITIONS. A WEAK SYSTEM DIVING OUT OF THE NORTHERN GREAT BASIN
INTO THE CENTRAL AND SOUTHERN ROCKIES MONDAY WILL TURN WINDS TO THE
NORTH LATER MONDAY AND MONDAY NIGHT WITH LINGERING BREEZY NORTH
WINDS ALONG THE COLORADO RIVER VALLEY TUESDAY INTO WEDNESDAY. WIND
SPEEDS DO NOT LOOK SIGNIFICANT AND NO ADVISORIES ARE ANTICIPATED.

FOR CHRISTMAS DAY...MODELS ARE GENERALLY IN GOOD AGREEMENT WITH A
SYSTEM SLIDING ACROSS NORTHERN NEVADA INTO UTAH AND COLORADO AND A
TRAILING COLD FRONT PASSING ACROSS THE AREA CHRISTMAS NIGHT. THIS
WILL BRING AN INCREASE IN NORTH WINDS AND LEAD TO A COUPLE OF CHILLY
DAYS FRIDAY AND SATURDAY. ANY SHOWER ACTIVITY ON CHRISTMAS EVE OR
CHRISTMAS DAY SHOULD STAY PRIMARILY ACROSS THE NORTHERN ZONE
MOUNTAINS BUT COULD SPREAD SOUTH ALONG THE FRONT THROUGH PORTIONS OF
LINCOLN COUNTY AND NORTHERN MOHAVE COUNTY.
&&

.AVIATION...FOR MCCARRAN...WINDS VARIABLE 6 KTS OR LESS THROUGH THE
AFTERNOON THEN SOUTHWEST UP TO 10KTS OVERNIGHT. MAINLY BKN CLOUDS
AOA 20K FEET WITH FEW-SCT CLOUDS AS LOW AS 10K FEET.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...WINDS WILL GENERALLY BE 6 KTS OR LESS AND TREND TOWARD
TYPICAL DIURNAL DIRECTIONS THROUGH TONIGHT. A FEW SHOWERS WILL BE
POSSIBLE ACROSS THE HIGHER ELEVATIONS OF INYO, ESMERALDA, CENTRAL
NYE AND NORTHERN LINCOLN COUNTIES THROUGH TONIGHT...WITH LINGERING
CHANCES OVER NORTHERN LINCOLN COUNTY ON SUNDAY. CIGS AS LOW AS 6K-8K
FEET IN AND NEAR ANY SHOWER ACTIVITY OTHERWISE MAINLY SCT-BKN CLOUDS
AOA 15K FEET WITH FEW-SCT CLOUDS AS LOW AS 10K-12K FEET.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SALMEN

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER








000
FXUS65 KVEF 202229
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
229 PM PST SAT DEC 20 2014

.SYNOPSIS...MOSTLY CLOUDY CONDITIONS WILL CONTINUE THROUGH TONIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE SOUTHERN GREAT BASIN
MOUNTAINS. HIGH PRESSURE OFF THE CALIFORNIA COAST WILL KEEP THE AREA
DRY AND MILD SUNDAY THROUGH CHRISTMAS EVE...THEN A STORM SYSTEM WILL
PASS NEAR THE AREA CHRISTMAS DAY AND USHER IN A ANOTHER ROUND OF
COOLER TEMPERATURES FOR THE END OF THE WEEK.
&&

.DISCUSSION...HIGH PRESSURE DEVELOPING OFF THE WEST COAST AND A
DIRTY NORTHERLY FLOW ALOFT WILL CONTINUE TO SPREAD CLOUDS ACROSS THE
REGION THROUGH SUNDAY MORNING. A SLIGHT CHANCE OF SHOWERS REMAINS
OVER THE FAR NORTHERN CWA MOUNTAINS INTO EARLY SUNDAY WITH ONLY VERY
LIGHT ACCUMULATIONS EXPECTED. THE THICKER CLOUD SHIELD SHOULD PUSH
EAST OF THE AREA SUNDAY AFTERNOON ALLOWING MORE SUNSHINE AND WARMER
CONDITIONS TO RETURN FOR MUCH OF THE AREA. HOWEVER WITH LIGHT WINDS
EXPECTED SUNDAY, HIGH TEMPERATURES IN SOME VALLEY LOCATIONS COULD
STRUGGLE TO REACH FORECASTED HIGHS.

THE FIRST HALF OF NEXT WEEK...THROUGH CHRISTMAS EVE...WILL BE
DOMINATED BY HIGH PRESSURE OFF THE COAST AND WARMER THAN NORMAL
CONDITIONS. A WEAK SYSTEM DIVING OUT OF THE NORTHERN GREAT BASIN
INTO THE CENTRAL AND SOUTHERN ROCKIES MONDAY WILL TURN WINDS TO THE
NORTH LATER MONDAY AND MONDAY NIGHT WITH LINGERING BREEZY NORTH
WINDS ALONG THE COLORADO RIVER VALLEY TUESDAY INTO WEDNESDAY. WIND
SPEEDS DO NOT LOOK SIGNIFICANT AND NO ADVISORIES ARE ANTICIPATED.

FOR CHRISTMAS DAY...MODELS ARE GENERALLY IN GOOD AGREEMENT WITH A
SYSTEM SLIDING ACROSS NORTHERN NEVADA INTO UTAH AND COLORADO AND A
TRAILING COLD FRONT PASSING ACROSS THE AREA CHRISTMAS NIGHT. THIS
WILL BRING AN INCREASE IN NORTH WINDS AND LEAD TO A COUPLE OF CHILLY
DAYS FRIDAY AND SATURDAY. ANY SHOWER ACTIVITY ON CHRISTMAS EVE OR
CHRISTMAS DAY SHOULD STAY PRIMARILY ACROSS THE NORTHERN ZONE
MOUNTAINS BUT COULD SPREAD SOUTH ALONG THE FRONT THROUGH PORTIONS OF
LINCOLN COUNTY AND NORTHERN MOHAVE COUNTY.
&&

.AVIATION...FOR MCCARRAN...WINDS VARIABLE 6 KTS OR LESS THROUGH THE
AFTERNOON THEN SOUTHWEST UP TO 10KTS OVERNIGHT. MAINLY BKN CLOUDS
AOA 20K FEET WITH FEW-SCT CLOUDS AS LOW AS 10K FEET.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...WINDS WILL GENERALLY BE 6 KTS OR LESS AND TREND TOWARD
TYPICAL DIURNAL DIRECTIONS THROUGH TONIGHT. A FEW SHOWERS WILL BE
POSSIBLE ACROSS THE HIGHER ELEVATIONS OF INYO, ESMERALDA, CENTRAL
NYE AND NORTHERN LINCOLN COUNTIES THROUGH TONIGHT...WITH LINGERING
CHANCES OVER NORTHERN LINCOLN COUNTY ON SUNDAY. CIGS AS LOW AS 6K-8K
FEET IN AND NEAR ANY SHOWER ACTIVITY OTHERWISE MAINLY SCT-BKN CLOUDS
AOA 15K FEET WITH FEW-SCT CLOUDS AS LOW AS 10K-12K FEET.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SALMEN

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER







000
FXUS65 KVEF 201749 AAA
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
949 AM PST SAT DEC 20 2014

.SYNOPSIS...A WEAK SYSTEM WILL PASS ACROSS THE AREA TODAY INTO
TONIGHT BRINGING ABUNDANT CLOUDS WITH IT. A FEW SHOWERS ARE POSSIBLE
IN THE HIGHER ELEVATIONS OF THE SOUTHERN GREAT BASIN. AN AREA OF
HIGH PRESSURE IS EXPECTED TO BUILD OFF OF CALIFORNIA SUNDAY THROUGH
TUESDAY KEEPING THE AREA DRY AND MILD. A STORM SYSTEM SHOULD PASS IN
OR NEAR THE AREA BETWEEN CHRISTMAS EVE AND CHRISTMAS DAY USHERING IN
A DROP IN TEMPERATURES FOR THE END OF NEXT WEEK.
&&

.UPDATE...AS EXPECTED, ABUNDANT CLOUD COVER HAS MOVED OVER THE
REGION THIS MORNING FOR MOSTLY CLOUDY CONDITIONS EVERYWHERE. SOME
THINNING OF THE CLOUD DECK COULD ALLOW FILTERED SUNLIGHT THROUGH AT
TIMES TODAY BUT PROBABLY NOT ENOUGH TO HELP TEMPERATURES WARM ABOVE
FORECASTED HIGHS. MODELS FORECAST SOME DRYING IN THE LOW AND MID
LEVELS TONIGHT BUT HIGH CLOUDS SHOULD HANG TOUGH THROUGH THE
REMAINDER OF THE WEEKEND. THE FORECAST IS IN GOOD SHAPE AND NO
UPDATES PLANNED. -SALMEN-
&&

.PREVIOUS DISCUSSION...208 AM PST...

.SHORT TERM...TODAY THROUGH MONDAY NIGHT.

THERE IS AN EXTENSIVE AREA OF ENHANCED CLOUD TOPS SHOWING UP ON
INFRARED SATELLITE IMAGERY EARLY THIS MORNING ACROSS OREGON, NORCAL
AND NORTHERN NEVADA IN ASSOCIATION WITH THE JET STREAM PASSING OVER
THIS AREA. THIS SHIELD OF MAINLY HIGH LEVEL CLOUDS WILL ADVANCE ON
SOUTH AND EAST TODAY AND AS A RESULT SUNSHINE WILL BE EVEN MORE
LIMITED TODAY THAN WHAT WE SAW YESTERDAY. TEMPS FELL SHORT OF
PREDICTED HIGHS YESTERDAY AND GIVEN THAT WE SHOULD SEE EVEN MORE
EXTENSIVE CLOUD COVER TODAY, SOME OF THE BIAS CORRECTED AND CONS
MODEL GUIDANCE LOOKS TO WARM FOR TEMPS. THUS I SIDED WITH
PERSISTENCE AND STATISTICAL MOS FOR A BLEND AS A STARTING POINT.
MOST OF THE MOISTURE WITH THIS SYSTEM WILL BE ABOVE 15000 FEET AND
VERY LITTLE IN THE WAY OF ENERGY IS SHOWN TO CROSS THE AREA THIS
EVENING INTO TONIGHT IN THE MID-LEVELS. AS A RESULT THERE IS NOT ALL
THAT MUCH GOING TO SUPPORT A LOT OF PRECIPITATION BUT A FEW LIGHT
SHOWERS MAY BE YIELDED ACROSS THE HIGHER TERRAIN OF THE SOUTHERN
GREAT BASIN THROUGH SUNDAY MORNING. THE BEST CHANCES WILL BE OVER
THE SOUTHERN SIERRA CREST AND IN THE PANHANDLE OF LINCOLN COUNTY.

THERE MAY BE SOME LOW STRATUS CLOUDS OR PATCHY FOG THIS MORNING IN
AND AROUND COLORADO CITY AS THE TEMP-DEWPOINT SPREAD REMAINS SMALL
AND WINDS ARE VERY LIGHT TO CALM. HOWEVER, THE AMOUNT OF CIRRUS
AROUND WOULD SEEM TO FAVOR A LOW STRATUS DECK FORMING VERSUS
RADIATION FOG.

ON SUNDAY, A LARGE AREA OF HIGH PRESSURE IN THE MID AND UPPER LEVELS
IS EXPECTED TO SET UP OFF OF CALIFORNIA. THIS WILL HELP TO PUSH
TEMPS UP SEVERAL DEGREES AND ALL AREAS WILL BE 4-8 DEGREES ABOVE
NORMAL, ESPECIALLY IN THOSE AREAS ABOVE THE INVERSION HEIGHT.
FURTHER WARMING SHOULD TAKE PLACE ON MONDAY AS THE RIDGE STAYS
OFFSHORE. WHILE THE DAY SHOULD START WITH AN INVERSION, THERE ARE
SIGNS, ESPECIALLY PER THE GFS, THAT IT MAY BREAK BY THE AFTERNOON AS
A MID/UPPER LEVEL TROUGH SWINGS ACROSS THE EASTERN GREAT BASIN. IF
THIS TROUGH CAN BREAK THE INVERSION AND WE MIX JUST ENOUGH, THE
CURRENT FORECAST HIGHS ARE TOO COOL, ESPECIALLY IN THE LOWER MOJAVE
DESERT VALLEYS. EITHER WAY IF YOU LIKE IT MILD, THIS WILL BE A NICE
STRETCH OF WEATHER FOR LATE DECEMBER.

.LONG TERM...TUESDAY THROUGH FRIDAY.

BEGINNING TUESDAY MORNING THE MODELS AGREE ON HIGH PRESSURE TO THE
WEST BEING THE DOMINANT FEATURE...WITH NORTHERLY FLOW OVER OUR AREA
PRODUCING LOCALLY BREEZY CONDITIONS PARTICULARLY DOWN THE COLORADO
RIVER VALLEY. THE MODEL AGREEMENT QUICKLY DETERIORATES BY
WEDNESDAY...AS THE OPERATIONAL MODELS DISAGREE ON WHETHER TO AMPLIFY
/ECMWF/ OR NOT AMPLIFY /GFS/ A SHORTWAVE TROUGH PASSING THROUGH 135W
WEDNESDAY MORNING. BOTH OPERATIONAL SOLUTIONS ARE REPRESENTED IN THE
ENSEMBLE PERTURBATIONS SO CONFIDENCE IS NEARLY NIL. BY WEDNESDAY
AFTERNOON THE GFS SUGGESTS FLAT RIDGING OVERHEAD AS THE WEAK TROUGH
PASSES THROUGH THE PACIFIC NORTHWEST...WHILE THE ECMWF SUGGESTS A
DEEPENING TROUGH MOVING INTO NORTHERN CALIFORNIA AND NEVADA WITH
INCREASING WINDS AREAWIDE....FOLLOWED BY A SHOT OF PRECIP WEDNESDAY
NIGHT AND STRONG NORTHWESTERLY WINDS ON CHRISTMAS DAY. MEANWHILE THE
GFS ZIPS ITS WEAK TROUGH INTO THE PLAINS WITH MINIMAL EFFECT ON OUR
AREA. TEMPERATURE FORECASTS ARE ALSO WILDLY DIFFERENT WITH THE GFS
MOS ONLY KNOCKING KLAS DOWN TO 60F FOR A HIGH ON FRIDAY...WHILE THE
ECMWF WITH ITS MUCH STRONGER TROUGH SHOWS 47F. OFFICIAL FORECAST
WILL TAKE A MIDDLE OF THE ROAD APPROACH FOR NOW AND WAIT FOR BETTER
CONFIDENCE.
&&

.AVIATION...FOR MCCARRAN...WINDS SHOULD BE 6 KTS OR LESS AND FAVOR
TYPICAL DIURNAL DIRECTIONAL TRENDS THROUGH TONIGHT. MAINLY BKN-OVC
CLOUDS AOA 20K FEET WITH FEW-SCT CLOUDS AS LOW AS 10K FEET.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...WINDS WILL BE 6 KTS OR LESS AND TREND TOWARD TYPICAL
DIURNAL DIRECTIONS THROUGH TONIGHT. A FEW SHOWERS WILL BE POSSIBLE
ACROSS THE HIGHER ELEVATIONS OF INYO, ESMERALDA, CENTRAL NYE AND
NORTHERN LINCOLN COUNTIES. CIGS AS LOW AS 6K-8K FEET IN AND NEAR ANY
SHOWERS OTHERWISE EXPECT MAINLY BKN CLOUDS AOA 20K FEET WITH A FEW
CLOUDS AS LOW AS 10K-12K FEET.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...MORGAN

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER










000
FXUS65 KVEF 201749 AAA
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
949 AM PST SAT DEC 20 2014

.SYNOPSIS...A WEAK SYSTEM WILL PASS ACROSS THE AREA TODAY INTO
TONIGHT BRINGING ABUNDANT CLOUDS WITH IT. A FEW SHOWERS ARE POSSIBLE
IN THE HIGHER ELEVATIONS OF THE SOUTHERN GREAT BASIN. AN AREA OF
HIGH PRESSURE IS EXPECTED TO BUILD OFF OF CALIFORNIA SUNDAY THROUGH
TUESDAY KEEPING THE AREA DRY AND MILD. A STORM SYSTEM SHOULD PASS IN
OR NEAR THE AREA BETWEEN CHRISTMAS EVE AND CHRISTMAS DAY USHERING IN
A DROP IN TEMPERATURES FOR THE END OF NEXT WEEK.
&&

.UPDATE...AS EXPECTED, ABUNDANT CLOUD COVER HAS MOVED OVER THE
REGION THIS MORNING FOR MOSTLY CLOUDY CONDITIONS EVERYWHERE. SOME
THINNING OF THE CLOUD DECK COULD ALLOW FILTERED SUNLIGHT THROUGH AT
TIMES TODAY BUT PROBABLY NOT ENOUGH TO HELP TEMPERATURES WARM ABOVE
FORECASTED HIGHS. MODELS FORECAST SOME DRYING IN THE LOW AND MID
LEVELS TONIGHT BUT HIGH CLOUDS SHOULD HANG TOUGH THROUGH THE
REMAINDER OF THE WEEKEND. THE FORECAST IS IN GOOD SHAPE AND NO
UPDATES PLANNED. -SALMEN-
&&

.PREVIOUS DISCUSSION...208 AM PST...

.SHORT TERM...TODAY THROUGH MONDAY NIGHT.

THERE IS AN EXTENSIVE AREA OF ENHANCED CLOUD TOPS SHOWING UP ON
INFRARED SATELLITE IMAGERY EARLY THIS MORNING ACROSS OREGON, NORCAL
AND NORTHERN NEVADA IN ASSOCIATION WITH THE JET STREAM PASSING OVER
THIS AREA. THIS SHIELD OF MAINLY HIGH LEVEL CLOUDS WILL ADVANCE ON
SOUTH AND EAST TODAY AND AS A RESULT SUNSHINE WILL BE EVEN MORE
LIMITED TODAY THAN WHAT WE SAW YESTERDAY. TEMPS FELL SHORT OF
PREDICTED HIGHS YESTERDAY AND GIVEN THAT WE SHOULD SEE EVEN MORE
EXTENSIVE CLOUD COVER TODAY, SOME OF THE BIAS CORRECTED AND CONS
MODEL GUIDANCE LOOKS TO WARM FOR TEMPS. THUS I SIDED WITH
PERSISTENCE AND STATISTICAL MOS FOR A BLEND AS A STARTING POINT.
MOST OF THE MOISTURE WITH THIS SYSTEM WILL BE ABOVE 15000 FEET AND
VERY LITTLE IN THE WAY OF ENERGY IS SHOWN TO CROSS THE AREA THIS
EVENING INTO TONIGHT IN THE MID-LEVELS. AS A RESULT THERE IS NOT ALL
THAT MUCH GOING TO SUPPORT A LOT OF PRECIPITATION BUT A FEW LIGHT
SHOWERS MAY BE YIELDED ACROSS THE HIGHER TERRAIN OF THE SOUTHERN
GREAT BASIN THROUGH SUNDAY MORNING. THE BEST CHANCES WILL BE OVER
THE SOUTHERN SIERRA CREST AND IN THE PANHANDLE OF LINCOLN COUNTY.

THERE MAY BE SOME LOW STRATUS CLOUDS OR PATCHY FOG THIS MORNING IN
AND AROUND COLORADO CITY AS THE TEMP-DEWPOINT SPREAD REMAINS SMALL
AND WINDS ARE VERY LIGHT TO CALM. HOWEVER, THE AMOUNT OF CIRRUS
AROUND WOULD SEEM TO FAVOR A LOW STRATUS DECK FORMING VERSUS
RADIATION FOG.

ON SUNDAY, A LARGE AREA OF HIGH PRESSURE IN THE MID AND UPPER LEVELS
IS EXPECTED TO SET UP OFF OF CALIFORNIA. THIS WILL HELP TO PUSH
TEMPS UP SEVERAL DEGREES AND ALL AREAS WILL BE 4-8 DEGREES ABOVE
NORMAL, ESPECIALLY IN THOSE AREAS ABOVE THE INVERSION HEIGHT.
FURTHER WARMING SHOULD TAKE PLACE ON MONDAY AS THE RIDGE STAYS
OFFSHORE. WHILE THE DAY SHOULD START WITH AN INVERSION, THERE ARE
SIGNS, ESPECIALLY PER THE GFS, THAT IT MAY BREAK BY THE AFTERNOON AS
A MID/UPPER LEVEL TROUGH SWINGS ACROSS THE EASTERN GREAT BASIN. IF
THIS TROUGH CAN BREAK THE INVERSION AND WE MIX JUST ENOUGH, THE
CURRENT FORECAST HIGHS ARE TOO COOL, ESPECIALLY IN THE LOWER MOJAVE
DESERT VALLEYS. EITHER WAY IF YOU LIKE IT MILD, THIS WILL BE A NICE
STRETCH OF WEATHER FOR LATE DECEMBER.

.LONG TERM...TUESDAY THROUGH FRIDAY.

BEGINNING TUESDAY MORNING THE MODELS AGREE ON HIGH PRESSURE TO THE
WEST BEING THE DOMINANT FEATURE...WITH NORTHERLY FLOW OVER OUR AREA
PRODUCING LOCALLY BREEZY CONDITIONS PARTICULARLY DOWN THE COLORADO
RIVER VALLEY. THE MODEL AGREEMENT QUICKLY DETERIORATES BY
WEDNESDAY...AS THE OPERATIONAL MODELS DISAGREE ON WHETHER TO AMPLIFY
/ECMWF/ OR NOT AMPLIFY /GFS/ A SHORTWAVE TROUGH PASSING THROUGH 135W
WEDNESDAY MORNING. BOTH OPERATIONAL SOLUTIONS ARE REPRESENTED IN THE
ENSEMBLE PERTURBATIONS SO CONFIDENCE IS NEARLY NIL. BY WEDNESDAY
AFTERNOON THE GFS SUGGESTS FLAT RIDGING OVERHEAD AS THE WEAK TROUGH
PASSES THROUGH THE PACIFIC NORTHWEST...WHILE THE ECMWF SUGGESTS A
DEEPENING TROUGH MOVING INTO NORTHERN CALIFORNIA AND NEVADA WITH
INCREASING WINDS AREAWIDE....FOLLOWED BY A SHOT OF PRECIP WEDNESDAY
NIGHT AND STRONG NORTHWESTERLY WINDS ON CHRISTMAS DAY. MEANWHILE THE
GFS ZIPS ITS WEAK TROUGH INTO THE PLAINS WITH MINIMAL EFFECT ON OUR
AREA. TEMPERATURE FORECASTS ARE ALSO WILDLY DIFFERENT WITH THE GFS
MOS ONLY KNOCKING KLAS DOWN TO 60F FOR A HIGH ON FRIDAY...WHILE THE
ECMWF WITH ITS MUCH STRONGER TROUGH SHOWS 47F. OFFICIAL FORECAST
WILL TAKE A MIDDLE OF THE ROAD APPROACH FOR NOW AND WAIT FOR BETTER
CONFIDENCE.
&&

.AVIATION...FOR MCCARRAN...WINDS SHOULD BE 6 KTS OR LESS AND FAVOR
TYPICAL DIURNAL DIRECTIONAL TRENDS THROUGH TONIGHT. MAINLY BKN-OVC
CLOUDS AOA 20K FEET WITH FEW-SCT CLOUDS AS LOW AS 10K FEET.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...WINDS WILL BE 6 KTS OR LESS AND TREND TOWARD TYPICAL
DIURNAL DIRECTIONS THROUGH TONIGHT. A FEW SHOWERS WILL BE POSSIBLE
ACROSS THE HIGHER ELEVATIONS OF INYO, ESMERALDA, CENTRAL NYE AND
NORTHERN LINCOLN COUNTIES. CIGS AS LOW AS 6K-8K FEET IN AND NEAR ANY
SHOWERS OTHERWISE EXPECT MAINLY BKN CLOUDS AOA 20K FEET WITH A FEW
CLOUDS AS LOW AS 10K-12K FEET.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...MORGAN

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER











000
FXUS65 KVEF 201008
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
208 AM PST SAT DEC 20 2014

.SYNOPSIS...A WEAK SYSTEM WILL PASS ACROSS THE AREA TODAY INTO
TONIGHT BRINGING ABUNDANT CLOUDS WITH IT. A FEW SHOWERS ARE POSSIBLE
IN THE HIGHER ELEVATIONS OF THE SOUTHERN GREAT BASIN. AN AREA OF
HIGH PRESSURE IS EXPECTED TO BUILD OFF OF CALIFORNIA SUNDAY THROUGH
TUESDAY KEEPING THE AREA DRY AND MILD. A STORM SYSTEM SHOULD PASS IN
OR NEAR THE AREA BETWEEN CHRISTMAS EVE AND CHRISTMAS DAY USHERING IN
A DROP IN TEMPERATURES FOR THE END OF NEXT WEEK.
&&

.SHORT TERM...TODAY THROUGH MONDAY NIGHT.

THERE IS AN EXTENSIVE AREA OF ENHANCED CLOUD TOPS SHOWING UP ON
INFRARED SATELLITE IMAGERY EARLY THIS MORNING ACROSS OREGON, NORCAL
AND NORTHERN NEVADA IN ASSOCIATION WITH THE JET STREAM PASSING OVER
THIS AREA. THIS SHIELD OF MAINLY HIGH LEVEL CLOUDS WILL ADVANCE ON
SOUTH AND EAST TODAY AND AS A RESULT SUNSHINE WILL BE EVEN MORE
LIMITED TODAY THAN WHAT WE SAW YESTERDAY. TEMPS FELL SHORT OF
PREDICTED HIGHS YESTERDAY AND GIVEN THAT WE SHOULD SEE EVEN MORE
EXTENSIVE CLOUD COVER TODAY, SOME OF THE BIAS CORRECTED AND CONS
MODEL GUIDANCE LOOKS TO WARM FOR TEMPS. THUS I SIDED WITH
PERSISTENCE AND STATISCAL MOS FOR A BLEND AS A STARTING POINT. MOST
OF THE MOISTURE WITH THIS SYSTEM WILL BE ABOVE 15000 FEET AND VERY
LITTLE IN THE WAY OF ENERGY IS SHOWN TO CROSS THE AREA THIS EVENING
INTO TONIGHT IN THE MID-LEVELS. AS A RESULT THERE IS NOT ALL THAT
MUCH GOING TO SUPPORT A LOT OF PRECIPITATION BUT A FEW LIGHT SHOWERS
MAY BE YIELDED ACROSS THE HIGHER TERRAIN OF THE SOUTHERN GREAT BASIN
THROUGH SUNDAY MORNING. THE BEST CHANCES WILL BE OVER THE SOUTHERN
SIERRA CREST AND IN THE PANHANDLE OF LINCOLN COUNTY.

THERE MAY BE SOME LOW STRATUS CLOUDS OR PATCHY FOG THIS MORNING IN
AND AROUND COLORADO CITY AS THE TEMP-DEWPOINT SPREAD REMAINS SMALL
AND WINDS ARE VERY LIGHT TO CALM. HOWEVER, THE AMOUNT OF CIRRUS
AROUND WOULD SEEM TO FAVOR A LOW STRATUS DECK FORMING VERSUS
RADIATION FOG.

ON SUNDAY, A LARGE AREA OF HIGH PRESSURE IN THE MID AND UPPER LEVELS
IS EXPECTED TO SET UP OFF OF CALIFORNIA. THIS WILL HELP TO PUSH
TEMPS UP SEVERAL DEGREES AND ALL AREAS WILL BE 4-8 DEGREES ABOVE
NORMAL, ESPECIALLY IN THOSE AREAS ABOVE THE INVERSION HEIGHT.
FURTHER WARMING SHOULD TAKE PLACE ON MONDAY AS THE RIDGE STAYS
OFFSHORE. WHILE THE DAY SHOULD START WITH AN INVERSION, THERE ARE
SIGNS, ESPECIALLY PER THE GFS, THAT IT MAY BREAK BY THE AFTERNOON AS
A MID/UPPER LEVEL TROUGH SWINGS ACROSS THE EASTERN GREAT BASIN. IF
THIS TROUGH CAN BREAK THE INVERSION AND WE MIX JUST ENOUGH, THE
CURRENT FORECAST HIGHS ARE TOO COOL, ESPECIALLY IN THE LOWER MOJAVE
DESERT VALLEYS. EITHER WAY IF YOU LIKE IT MILD, THIS WILL BE A NICE
STRETCH OF WEATHER FOR LATE DECEMBER.

.LONG TERM...TUESDAY THROUGH FRIDAY.

BEGINNING TUESDAY MORNING THE MODELS AGREE ON HIGH PRESSURE TO THE
WEST BEING THE DOMINANT FEATURE...WITH NORTHERLY FLOW OVER OUR AREA
PRODUCING LOCALLY BREEZY CONDITIONS PARTICULARLY DOWN THE COLORADO
RIVER VALLEY. THE MODEL AGREEMENT QUICKLY DETERIORATES BY
WEDNESDAY...AS THE OPERATIONAL MODELS DISAGREE ON WHETHER TO AMPLIFY
/ECMWF/ OR NOT AMPLIFY /GFS/ A SHORTWAVE TROUGH PASSING THROUGH 135W
WEDNESDAY MORNING. BOTH OPERATIONAL SOLUTIONS ARE REPRESENTED IN THE
ENSEMBLE PERTURBATIONS SO CONFIDENCE IS NEARLY NIL. BY WEDNESDAY
AFTERNOON THE GFS SUGGESTS FLAT RIDGING OVERHEAD AS THE WEAK TROUGH
PASSES THROUGH THE PACIFIC NORTHWEST...WHILE THE ECMWF SUGGESTS A
DEEPENING TROUGH MOVING INTO NORTHERN CALIFORNIA AND NEVADA WITH
INCREASING WINDS AREAWIDE....FOLLOWED BY A SHOT OF PRECIP WEDNESDAY
NIGHT AND STRONG NORTHWESTERLY WINDS ON CHRISTMAS DAY. MEANWHILE THE
GFS ZIPS ITS WEAK TROUGH INTO THE PLAINS WITH MINIMAL EFFECT ON OUR
AREA. TEMPERATURE FORECASTS ARE ALSO WILDLY DIFFERENT WITH THE GFS
MOS ONLY KNOCKING KLAS DOWN TO 60F FOR A HIGH ON FRIDAY...WHILE THE
ECMWF WITH ITS MUCH STRONGER TROUGH SHOWS 47F. OFFICIAL FORECAST
WILL TAKE A MIDDLE OF THE ROAD APPROACH FOR NOW AND WAIT FOR BETTER
CONFIDENCE.
&&

.AVIATION...FOR MCCARRAN...WINDS SHOULD BE 6 KTS OR LESS AND FAVOR
TYPICAL DIURNAL DIRECTIONAL TRENDS THROUGH TONIGHT. MAINLY BKN-OVC
CLOUDS AOA 20K FEET WITH FEW-SCT CLOUDS AS LOW AS 10K FEET.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...WINDS WILL BE 6 KTS OR LESS AND TREND TOWARD TYPICAL
DIURNAL DIRECTIONS THROUGH TONIGHT. A FEW SHOWERS WILL BE POSSIBLE
ACROSS THE HIGHER ELEVATIONS OF INYO, ESMERALDA, CENTRAL NYE AND
NORTHERN LINCOLN COUNTIES. CIGS AS LOW AS 6K-8K FEET IN AND NEAR ANY
SHOWERS OTHERWISE EXPECT MAINLY BKN CLOUDS AOA 20K FEET WITH A FEW
CLOUDS AS LOW AS 10K-12K FEET.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...MORGAN

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER








000
FXUS65 KVEF 200555
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
955 PM PST FRI DEC 19 2014

.SYNOPSIS...A WEAK SYSTEM WILL MOVE ACROSS THE AREA THROUGH SATURDAY
WITH JUST A FEW SHOWERS POSSIBLE IN THE SIERRA AND THE HIGHER
ELEVATIONS OF THE SOUTHERN GREAT BASIN. THE REMAINDER OF THE AREA
WILL SEE AN INCREASE IN HIGH CLOUDS. HIGH PRESSURE IS EXPECTED TO
STRENGTHEN OFF THE COAST OF CALIFORNIA ON SUNDAY AND HOLD THROUGH
TUESDAY KEEPING THE AREA DRY AND MILD. ANOTHER SYSTEM MAY IMPACT THE
AREA CHRISTMAS EVE INTO CHRISTMAS DAY.
&&

.UPDATE...ONCE AGAIN WE HAVE SOME VERY CLOSE TEMP-DEWPOINT SPREADS
AT THE SURFACE THIS EVENING ACROSS MOHAVE COUNTY WITH COLORADO CITY
SHOWING SATURATED CONDITIONS. WINDS ARE LIGHT AND THE LOW-LEVEL
MOISTURE IN PLACE IS NOT GOING TO GO ANYWHERE OVERNIGHT. THE MAIN
FACTOR AGAINST ANY FOG TONIGHT WOULD BE THE CIRRUS PASSING OVERHEAD.
OBSERVATIONS AROUND DAYBREAK FRIDAY (TODAY) SHOWED MAINLY A LOW
STRATUS DECK DEVELOPED. BUFKIT SOUNDINGS FROM THE RAP ARE NOT TOO
FAVORABLE FOR MUCH IN THE WAY OF FOG TONIGHT AT KINGMAN, BUT I
SUSPECT THAT WE COULD SEE AT LEAST A FEW PATCHES OF FOG OR LOW
STRATUS CLOUDS DEVELOP ESPECIALLY IN THE AREA IN AND AROUND COLORADO
CITY OVERNIGHT OR AFTER DAYBREAK SATURDAY. I WENT AHEAD AND ADJUSTED
THE GRIDS FOR THIS AS WELL AS ADJUSTED UP DEWPOINTS FOR TONIGHT
BASED ON THE LATEST OBSERVATIONS. THE REST OF THE FORECAST LOOKS ON
TRACK FOR NOW, ALTHOUGH SOME ADJUSTMENTS TO POPS MAY BE NEEDED FOR
SATURDAY IN LINCOLN COUNTY AS THE LATEST MODELS SHOW A BIT MORE QPF
IN THE PANHANDLE.
&&

.AVIATION...FOR MCCARRAN...WINDS SHOULD BE 6 KTS OR LESS AND FAVOR
TYPICAL DIURNAL DIRECTIONAL TRENDS. MAINLY BKN CLOUDS AOA 20K FEET
WITH FEW-SCT CLOUDS AS LOW AS 15K FEET OVERNIGHT AND AS LOW AS 10K
FEET ON SATURDAY.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...WINDS WILL BE 6 KTS OR LESS AND TREND TOWARD TYPICAL
DIURNAL DIRECTIONS. A FEW SHOWERS WILL BE POSSIBLE ACROSS THE HIGHER
ELEVATIONS OF INYO, ESMERALDA, CENTRAL NYE AND NORTHERN LINCOLN
COUNTIES THROUGH SATURDAY. CIGS AS LOW AS 6K-8K FEET IN AND NEAR ANY
SHOWERS OTHERWISE EXPECT MAINLY BKN CLOUDS AOA 20K FEET WITH A FEW
CLOUDS AS LOW AS 10K-12K FEET.
&&

.PREVIOUS DISCUSSION...
ISSUED AT 300 PM PST FRI DEC 19 2014

DISCUSSION...

ANY SHOWERS THAT DO FALL ARE EXPECTED TO REMAIN LIGHT AND ANY UPPER
ELEVATIONS SNOWFALL /ABOVE 6500 FEET/ WILL REMAIN WELL BELOW
ADVISORY LEVELS. THIS  SYSTEM WILL CONTINUE TO PUSH EAST TONIGHT
WITH ONLY A SLIGHT CHANCE OF SHOWERS FOR ESMERALDA...CENTRAL NYE AND
NORTHERN LINCOLN COUNTIES. HIGH PRESSURE WILL START TO STRENGTHEN
OVER THE EASTERN PACIFIC LATE SATURDAY AND SLOWLY DRIFT EAST BY
SUNDAY. A DRIER NORTHWEST FLOW WILL SET UP OVER THE AREA THROUGH
MONDAY...BUT SURFACE HIGH PRESSURE IS FORECAST TO BUILD OVER IDAHO
AND MOVE INTO WYOMING MONDAY EVENING AND TUESDAY. THIS WILL CAUSE
THE SURFACE GRADIENT TO INCREASE DOWN THE COLORADO RIVER VALLEY AND
BRING SOME GUSTY NORTH WINDS TO THE AREA...ESPECIALLY AROUND
LAUGHLIN/BULLHEAD CITY. BY TUESDAY AFTERNOON THE HIGH PRESSURE RIDGE
WILL MOVE OVER THE AREA BRINGING LIGHT WINDS AND ABOVE NORMAL
TEMPERATURES. READINGS BY MID WEEK MAY BE AS HIGH AS 10 DEGREES
ABOVE NORMAL. HOWEVER...SURFACE INVERSIONS MAY HELP KEEP THOSE
NUMBERS DOWN A LITTLE. BEYOND WEDNESDAY GETS A LITTLE TRICKY AS THE
GFS/ECMWF DIFFER ON A POTENTIAL TROUGH MOVING INTO THE AREA ON
CHRISTMAS DAY. IT DOES LOOK LIKE WINDS WILL START TO INCREASE
WEDNESDAY AFTERNOON...WHICH WILL LIKELY MAKE WEDNESDAY THE WARMEST
DAY OF NEXT WEEK AND THEN A COLD FRONT WILL MOVE THROUGH ON
THURSDAY. HOWEVER...THE STRENGTH OF THE FRONT AND HOW FAR SOUTH THIS
SYSTEM DIGS IN ALSO IN QUESTION. FOR NOW IT DOES LOOK LIKE WE WILL
SEE SOME WINDIER AND COOLER WEATHER ON CHRISTMAS WITH THE POTENTIAL
OF SHOWERS AT LEAST ACROSS NORTHERN AND CENTRAL NEVADA. &&


.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

UPDATE/AVIATION....STACHELSKI
PREVIOUS...GORELOW

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER











000
FXUS65 KVEF 200555
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
955 PM PST FRI DEC 19 2014

.SYNOPSIS...A WEAK SYSTEM WILL MOVE ACROSS THE AREA THROUGH SATURDAY
WITH JUST A FEW SHOWERS POSSIBLE IN THE SIERRA AND THE HIGHER
ELEVATIONS OF THE SOUTHERN GREAT BASIN. THE REMAINDER OF THE AREA
WILL SEE AN INCREASE IN HIGH CLOUDS. HIGH PRESSURE IS EXPECTED TO
STRENGTHEN OFF THE COAST OF CALIFORNIA ON SUNDAY AND HOLD THROUGH
TUESDAY KEEPING THE AREA DRY AND MILD. ANOTHER SYSTEM MAY IMPACT THE
AREA CHRISTMAS EVE INTO CHRISTMAS DAY.
&&

.UPDATE...ONCE AGAIN WE HAVE SOME VERY CLOSE TEMP-DEWPOINT SPREADS
AT THE SURFACE THIS EVENING ACROSS MOHAVE COUNTY WITH COLORADO CITY
SHOWING SATURATED CONDITIONS. WINDS ARE LIGHT AND THE LOW-LEVEL
MOISTURE IN PLACE IS NOT GOING TO GO ANYWHERE OVERNIGHT. THE MAIN
FACTOR AGAINST ANY FOG TONIGHT WOULD BE THE CIRRUS PASSING OVERHEAD.
OBSERVATIONS AROUND DAYBREAK FRIDAY (TODAY) SHOWED MAINLY A LOW
STRATUS DECK DEVELOPED. BUFKIT SOUNDINGS FROM THE RAP ARE NOT TOO
FAVORABLE FOR MUCH IN THE WAY OF FOG TONIGHT AT KINGMAN, BUT I
SUSPECT THAT WE COULD SEE AT LEAST A FEW PATCHES OF FOG OR LOW
STRATUS CLOUDS DEVELOP ESPECIALLY IN THE AREA IN AND AROUND COLORADO
CITY OVERNIGHT OR AFTER DAYBREAK SATURDAY. I WENT AHEAD AND ADJUSTED
THE GRIDS FOR THIS AS WELL AS ADJUSTED UP DEWPOINTS FOR TONIGHT
BASED ON THE LATEST OBSERVATIONS. THE REST OF THE FORECAST LOOKS ON
TRACK FOR NOW, ALTHOUGH SOME ADJUSTMENTS TO POPS MAY BE NEEDED FOR
SATURDAY IN LINCOLN COUNTY AS THE LATEST MODELS SHOW A BIT MORE QPF
IN THE PANHANDLE.
&&

.AVIATION...FOR MCCARRAN...WINDS SHOULD BE 6 KTS OR LESS AND FAVOR
TYPICAL DIURNAL DIRECTIONAL TRENDS. MAINLY BKN CLOUDS AOA 20K FEET
WITH FEW-SCT CLOUDS AS LOW AS 15K FEET OVERNIGHT AND AS LOW AS 10K
FEET ON SATURDAY.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...WINDS WILL BE 6 KTS OR LESS AND TREND TOWARD TYPICAL
DIURNAL DIRECTIONS. A FEW SHOWERS WILL BE POSSIBLE ACROSS THE HIGHER
ELEVATIONS OF INYO, ESMERALDA, CENTRAL NYE AND NORTHERN LINCOLN
COUNTIES THROUGH SATURDAY. CIGS AS LOW AS 6K-8K FEET IN AND NEAR ANY
SHOWERS OTHERWISE EXPECT MAINLY BKN CLOUDS AOA 20K FEET WITH A FEW
CLOUDS AS LOW AS 10K-12K FEET.
&&

.PREVIOUS DISCUSSION...
ISSUED AT 300 PM PST FRI DEC 19 2014

DISCUSSION...

ANY SHOWERS THAT DO FALL ARE EXPECTED TO REMAIN LIGHT AND ANY UPPER
ELEVATIONS SNOWFALL /ABOVE 6500 FEET/ WILL REMAIN WELL BELOW
ADVISORY LEVELS. THIS  SYSTEM WILL CONTINUE TO PUSH EAST TONIGHT
WITH ONLY A SLIGHT CHANCE OF SHOWERS FOR ESMERALDA...CENTRAL NYE AND
NORTHERN LINCOLN COUNTIES. HIGH PRESSURE WILL START TO STRENGTHEN
OVER THE EASTERN PACIFIC LATE SATURDAY AND SLOWLY DRIFT EAST BY
SUNDAY. A DRIER NORTHWEST FLOW WILL SET UP OVER THE AREA THROUGH
MONDAY...BUT SURFACE HIGH PRESSURE IS FORECAST TO BUILD OVER IDAHO
AND MOVE INTO WYOMING MONDAY EVENING AND TUESDAY. THIS WILL CAUSE
THE SURFACE GRADIENT TO INCREASE DOWN THE COLORADO RIVER VALLEY AND
BRING SOME GUSTY NORTH WINDS TO THE AREA...ESPECIALLY AROUND
LAUGHLIN/BULLHEAD CITY. BY TUESDAY AFTERNOON THE HIGH PRESSURE RIDGE
WILL MOVE OVER THE AREA BRINGING LIGHT WINDS AND ABOVE NORMAL
TEMPERATURES. READINGS BY MID WEEK MAY BE AS HIGH AS 10 DEGREES
ABOVE NORMAL. HOWEVER...SURFACE INVERSIONS MAY HELP KEEP THOSE
NUMBERS DOWN A LITTLE. BEYOND WEDNESDAY GETS A LITTLE TRICKY AS THE
GFS/ECMWF DIFFER ON A POTENTIAL TROUGH MOVING INTO THE AREA ON
CHRISTMAS DAY. IT DOES LOOK LIKE WINDS WILL START TO INCREASE
WEDNESDAY AFTERNOON...WHICH WILL LIKELY MAKE WEDNESDAY THE WARMEST
DAY OF NEXT WEEK AND THEN A COLD FRONT WILL MOVE THROUGH ON
THURSDAY. HOWEVER...THE STRENGTH OF THE FRONT AND HOW FAR SOUTH THIS
SYSTEM DIGS IN ALSO IN QUESTION. FOR NOW IT DOES LOOK LIKE WE WILL
SEE SOME WINDIER AND COOLER WEATHER ON CHRISTMAS WITH THE POTENTIAL
OF SHOWERS AT LEAST ACROSS NORTHERN AND CENTRAL NEVADA. &&


.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

UPDATE/AVIATION....STACHELSKI
PREVIOUS...GORELOW

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER










000
FXUS65 KVEF 192259
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
300 PM PST FRI DEC 19 2014

.SYNOPSIS...A WEAK SYSTEM WILL MOVE ACROSS THE AREA THROUGH SATURDAY
WITH JUST A FEW SHOWERS POSSIBLE IN THE SIERRA AND THE HIGHER
ELEVATIONS OF THE SOUTHERN GREAT BASIN. THE REMAINDER OF THE AREA
WILL SEE AN INCREASE IN HIGH CLOUDS. HIGH PRESSURE IS EXPECTED TO
STRENGTHEN OFF THE COAST OF CALIFORNIA ON SUNDAY AND HOLD THROUGH
TUESDAY KEEPING THE AREA DRY AND MILD. ANOTHER SYSTEM MAY IMPACT THE
AREA CHRISTMAS EVE INTO CHRISTMAS DAY.
&&

DISCUSSION...
HIGH LEVEL CLOUDS PUSHING ACROSS THE REGION THIS AFTERNOON AHEAD OF
A WEAK SYSTEM THAT IS CURRENTLY MOVING INTO THE PACIFIC NORTHWEST.
REGIONAL MOSAIC RADAR SHOWING SOME LIGHT SHOWERS MOVING THROUGH
CENTRAL CALIFORNIA WHICH WILL REACH THE SOUTHERN SIERRA AND
MOUNTAINS OF ESMERALDA COUNTY THIS EVENING. ANY SHOWERS THAT DO FALL
ARE EXPECTED TO REMAIN LIGHT AND ANY UPPER ELEVATIONS SNOWFALL
/ABOVE 6500 FEET/ WILL REMAIN WELL BELOW ADVISORY LEVELS. THIS
SYSTEM WILL CONTINUE TO PUSH EAST TONIGHT WITH ONLY A SLIGHT CHANCE
OF SHOWERS FOR ESMERALDA...CENTRAL NYE AND NORTHERN LINCOLN
COUNTIES. HIGH PRESSURE WILL START TO STRENGTHEN OVER THE EASTERN
PACIFIC LATE SATURDAY AND SLOWLY DRIFT EAST BY SUNDAY. A DRIER
NORTHWEST FLOW WILL SET UP OVER THE AREA THROUGH MONDAY...BUT
SURFACE HIGH PRESSURE IS FORECAST TO BUILD OVER IDAHO AND MOVE INTO
WYOMING MONDAY EVENING AND TUESDAY. THIS WILL CAUSE THE SURFACE
GRADIENT TO INCREASE DOWN THE COLORADO RIVER VALLEY AND BRING SOME
GUSTY NORTH WINDS TO THE AREA...ESPECIALLY AROUND LAUGHLIN/BULLHEAD
CITY. BY TUESDAY AFTERNOON THE HIGH PRESSURE RIDGE WILL MOVE OVER
THE AREA BRINGING LIGHT WINDS AND ABOVE NORMAL TEMPERATURES.
READINGS BY MID WEEK MAY BE AS HIGH AS 10 DEGREES ABOVE NORMAL.
HOWEVER...SURFACE INVERSIONS MAY HELP KEEP THOSE NUMBERS DOWN A
LITTLE. BEYOND WEDNESDAY GETS A LITTLE TRICKY AS THE GFS/ECMWF
DIFFER ON A POTENTIAL TROUGH MOVING INTO THE AREA ON CHRISTMAS DAY.
IT DOES LOOK LIKE WINDS WILL START TO INCREASE WEDNESDAY
AFTERNOON...WHICH WILL LIKELY MAKE WEDNESDAY THE WARMEST DAY OF NEXT
WEEK AND THEN A COLD FRONT WILL MOVE THROUGH ON THURSDAY.
HOWEVER...THE STRENGTH OF THE FRONT AND HOW FAR SOUTH THIS SYSTEM
DIGS IN ALSO IN QUESTION. FOR NOW IT DOES LOOK LIKE WE WILL SEE SOME
WINDIER AND COOLER WEATHER ON CHRISTMAS WITH THE POTENTIAL OF
SHOWERS AT LEAST ACROSS NORTHERN AND CENTRAL NEVADA.
&&

.AVIATION...FOR MCCARRAN...MAINLY BKN CLOUDS WITH BASES LOWERING
FROM AROUND 25K FEET THIS AFTERNOON TO AROUND 15K FEET THIS EVENING
AND SATURDAY. WINDS SHOULD BE 6 KTS OR LESS AND FAVOR TYPICAL
DIURNAL DIRECTIONAL TRENDS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...SCT-BKN CLOUDS AOA 25K FEET WITH BASES LOWERING TO
10-15K FEET THROUGH TONIGHT. WINDS WILL BE 6 KTS OR LESS AND TREND
TOWARD TYPICAL DIURNAL DIRECTIONS THROUGH TONIGHT. A FEW SHOWERS
WILL BE POSSIBLE ACROSS THE SIERRA...ESMERALDA...CENTRAL NYE AND
NORTHERN LINCOLN COUNTIES.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

GORELOW

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER








000
FXUS65 KVEF 192259
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
300 PM PST FRI DEC 19 2014

.SYNOPSIS...A WEAK SYSTEM WILL MOVE ACROSS THE AREA THROUGH SATURDAY
WITH JUST A FEW SHOWERS POSSIBLE IN THE SIERRA AND THE HIGHER
ELEVATIONS OF THE SOUTHERN GREAT BASIN. THE REMAINDER OF THE AREA
WILL SEE AN INCREASE IN HIGH CLOUDS. HIGH PRESSURE IS EXPECTED TO
STRENGTHEN OFF THE COAST OF CALIFORNIA ON SUNDAY AND HOLD THROUGH
TUESDAY KEEPING THE AREA DRY AND MILD. ANOTHER SYSTEM MAY IMPACT THE
AREA CHRISTMAS EVE INTO CHRISTMAS DAY.
&&

DISCUSSION...
HIGH LEVEL CLOUDS PUSHING ACROSS THE REGION THIS AFTERNOON AHEAD OF
A WEAK SYSTEM THAT IS CURRENTLY MOVING INTO THE PACIFIC NORTHWEST.
REGIONAL MOSAIC RADAR SHOWING SOME LIGHT SHOWERS MOVING THROUGH
CENTRAL CALIFORNIA WHICH WILL REACH THE SOUTHERN SIERRA AND
MOUNTAINS OF ESMERALDA COUNTY THIS EVENING. ANY SHOWERS THAT DO FALL
ARE EXPECTED TO REMAIN LIGHT AND ANY UPPER ELEVATIONS SNOWFALL
/ABOVE 6500 FEET/ WILL REMAIN WELL BELOW ADVISORY LEVELS. THIS
SYSTEM WILL CONTINUE TO PUSH EAST TONIGHT WITH ONLY A SLIGHT CHANCE
OF SHOWERS FOR ESMERALDA...CENTRAL NYE AND NORTHERN LINCOLN
COUNTIES. HIGH PRESSURE WILL START TO STRENGTHEN OVER THE EASTERN
PACIFIC LATE SATURDAY AND SLOWLY DRIFT EAST BY SUNDAY. A DRIER
NORTHWEST FLOW WILL SET UP OVER THE AREA THROUGH MONDAY...BUT
SURFACE HIGH PRESSURE IS FORECAST TO BUILD OVER IDAHO AND MOVE INTO
WYOMING MONDAY EVENING AND TUESDAY. THIS WILL CAUSE THE SURFACE
GRADIENT TO INCREASE DOWN THE COLORADO RIVER VALLEY AND BRING SOME
GUSTY NORTH WINDS TO THE AREA...ESPECIALLY AROUND LAUGHLIN/BULLHEAD
CITY. BY TUESDAY AFTERNOON THE HIGH PRESSURE RIDGE WILL MOVE OVER
THE AREA BRINGING LIGHT WINDS AND ABOVE NORMAL TEMPERATURES.
READINGS BY MID WEEK MAY BE AS HIGH AS 10 DEGREES ABOVE NORMAL.
HOWEVER...SURFACE INVERSIONS MAY HELP KEEP THOSE NUMBERS DOWN A
LITTLE. BEYOND WEDNESDAY GETS A LITTLE TRICKY AS THE GFS/ECMWF
DIFFER ON A POTENTIAL TROUGH MOVING INTO THE AREA ON CHRISTMAS DAY.
IT DOES LOOK LIKE WINDS WILL START TO INCREASE WEDNESDAY
AFTERNOON...WHICH WILL LIKELY MAKE WEDNESDAY THE WARMEST DAY OF NEXT
WEEK AND THEN A COLD FRONT WILL MOVE THROUGH ON THURSDAY.
HOWEVER...THE STRENGTH OF THE FRONT AND HOW FAR SOUTH THIS SYSTEM
DIGS IN ALSO IN QUESTION. FOR NOW IT DOES LOOK LIKE WE WILL SEE SOME
WINDIER AND COOLER WEATHER ON CHRISTMAS WITH THE POTENTIAL OF
SHOWERS AT LEAST ACROSS NORTHERN AND CENTRAL NEVADA.
&&

.AVIATION...FOR MCCARRAN...MAINLY BKN CLOUDS WITH BASES LOWERING
FROM AROUND 25K FEET THIS AFTERNOON TO AROUND 15K FEET THIS EVENING
AND SATURDAY. WINDS SHOULD BE 6 KTS OR LESS AND FAVOR TYPICAL
DIURNAL DIRECTIONAL TRENDS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...SCT-BKN CLOUDS AOA 25K FEET WITH BASES LOWERING TO
10-15K FEET THROUGH TONIGHT. WINDS WILL BE 6 KTS OR LESS AND TREND
TOWARD TYPICAL DIURNAL DIRECTIONS THROUGH TONIGHT. A FEW SHOWERS
WILL BE POSSIBLE ACROSS THE SIERRA...ESMERALDA...CENTRAL NYE AND
NORTHERN LINCOLN COUNTIES.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

GORELOW

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER







000
FXUS65 KVEF 191730 AAA
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
930 AM PST FRI DEC 19 2014

.SYNOPSIS...A WEAK SYSTEM WILL MOVE ACROSS THE AREA TODAY THROUGH
SATURDAY MARKED MAINLY BY AN INCREASE IN CLOUD COVER. A FEW LIGHT
SHOWERS WILL BE POSSIBLE IN THE HIGHER ELEVATIONS OF THE SOUTHERN
GREAT BASIN. HIGH PRESSURE IS EXPECTED TO STRENGTHEN OFF THE COAST
OF CALIFORNIA ON SUNDAY AND HOLD THROUGH TUESDAY KEEPING THE AREA
DRY AND MILD. ANOTHER SYSTEM MAY IMPACT THE AREA CHRISTMAS EVE INTO
CHRISTMAS DAY.
&&

.UPDATE...BATCH OF THICK HIGH CLOUDS CURRENTLY PUSHING THROUGH THE
EASTERN CWA WITH ANOTHER BATCH OF THICK HIGH CLOUDS MOVING THROUGH
THE WESTERN HALF. IN BETWEEN BASICALLY SEEING MOSTLY SUNNY SKIES
WITH JUST THIN HIGH CLOUDS. HAVE CHANGED SKY GRIDS TO BETTER REFLECT
CURRENT CONDITIONS. EVERYTHING ELSE IN GOOD SHAPE.
&&

PREV DISCUSSION
223 AM PST FRI DEC 19 2014

.SHORT TERM...TODAY THROUGH SUNDAY NIGHT.

CLOUDS ARE ONCE AGAIN IN THE FORECAST FOR TODAY AS ANOTHER MID/UPPER
LEVEL TROUGH ROLLS ON IN FROM THE PACIFIC. MOST OF THE MOISTURE WITH
THIS INCOMING SYSTEM WILL REMAIN ABOVE 15000 FEET WHICH WILL
TRANSLATE INTO A LOT OF HIGH LEVEL CLOUDS ACROSS MOST OF THE AREA
TODAY FOLLOWED BY MID AND HIGH LEVEL CLOUDS AS THIS SYSTEM PASSES
ACROSS THE AREA TONIGHT INTO SATURDAY. IT IS WORTH NOTING THAT SO
FAR THIS MONTH LAS VEGAS HAS ONLY HAD 1 DAY THAT COUNTS AS CLEAR
BASED ON SUNRISE TO SUNSET AVERAGE SKY COVER OF 30 PERCENT OR LESS.
NEITHER TODAY OR TOMORROW WILL ADD TO THAT COUNT. ACROSS THE HIGHER
ELEVATIONS OF THE SOUTHERN GREAT BASIN A FEW LIGHT SHOWERS MAY BE
SQUEEZED OUT LATE THIS AFTERNOON THROUGH SATURDAY. SNOW LEVELS WILL
BE BETWEEN 6000 AND 6500 FEET. TEMPS TODAY SHOULD BE CLOSE TO WHAT
WE SAW YESTERDAY WITH NOT MUCH GAIN EXPECTED DUE TO THE INCREASE IN
CLOUDS. TEMPS ON SATURDAY LOOK ABOUT THE SAME AS TODAY BASED ON
FORECAST SOUNDINGS. A BLEND OF THE BETTER PERFORMING BIAS CORRECTED
CONS MODELS AND MOS GUIDANCE WAS USED FOR TEMPS.

HIGH PRESSURE ALOFT IS EXPECTED TO BUILD INTO THE EASTERN PACIFIC
OFF OF CALIFORNIA SATURDAY NIGHT THROUGH SUNDAY NIGHT AND
STRENGTHEN. THIS WILL KEEP THE AREA DRY WITH A WARMING TREND,
HOWEVER, THIS WILL SET UP ENOUGH OF AN INVERSION TO KEEP THE LOWER
VALLEYS WEAKLY MIXED AND THUS AREAS BELOW THE INVERSION HEIGHT WILL
ONLY WARM UP MODESTLY TO ABOUT 4-6 DEGREES ABOVE NORMAL AT BEST.
SURFACE PRESSURE GRADIENTS TIGHTEN STARTING SUNDAY NIGHT AS A
SURFACE HIGH SETTLES INTO NORTHERN NEVADA. THIS WILL INCREASE WINDS
SOME IN THE COLORADO RIVER VALLEY.

.LONG TERM...MONDAY THROUGH CHRISTMAS DAY.

STRONG HIGH PRESSURE OVER THE EASTERN PACIFIC WILL BE THE MAIN
FEATURE MONDAY AND TUESDAY. NORTHERLY FLOW DOWN THE FRONT SIDE OF
THE RIDGE WILL RESULT IN LOCALLY BREEZY NORTH WINDS MONDAY AND
TUESDAY...ESPECIALLY DOWN THE COLORADO RIVER VALLEY. THE ENHANCED
MIXING COULD ALSO BRING SOME UNSEASONABLY WARM WEATHER TO THE WINDY
SPOTS. BY TUESDAY NIGHT THE MODELS START TO DIVERGE A BIT...BUT
AGREE ON A SHORTWAVE TROUGH APPROACHING THE PACIFIC NORTHWEST. THIS
WILL WEAKEN THE RIDGE AND REVERSE THE PRESSURE GRADIENTS AS IT
SWINGS TOWARD NORTHERN CALIFORNIA WEDNESDAY. TIMING AND STRENGTH
DETAILS ARE UNCLEAR...BUT THERE IS SOME CHANCE OF STRONG WESTERLY
WINDS WEDNESDAY AND/OR CHRISTMAS DAY AS THE STORM ROLLS THROUGH THE
GREAT BASIN. CANNOT RULE OUT SOME PRECIP CHANCES AS WELL...BUT FOR
NOW LIMITED ANY MENTION OF WEATHER TO THE SOUTHERN GREAT BASIN. IF
THE STORM ACTUALLY TRACKS FARTHER NORTH OR EAST...IMPACTS WOULD BE
LESS...BUT IF IT TRACKS FARTHER SOUTH OR WEST...THE MAIN FOCUS COULD
SHIFT FROM WIND TO PRECIP. EITHER WAY...TEMPERATURES WILL COME DOWN
QUITE A BIT FROM TUESDAY TO CHRISTMAS DAY.
&&

.AVIATION...FOR MCCARRAN...MAINLY BKN CLOUDS WITH BASES LOWERING
FROM AROUND 25K FEET TO 15K FEET FT ARE EXPECTED THROUGH THIS
EVENING. WINDS SHOULD BE 6 KTS OR LESS AND FAVOR TYPICAL DIURNAL
DIRECTIONAL TRENDS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...SCT-BKN CLOUDS AOA 25K FEET WITH BASES LOWERING TO
10-15K FEET THROUGH TONIGHT. THE LOWEST BASES THIS AFTERNOON INTO
TONIGHT SHOULD BE IN AND AROUND KBIH. WINDS WILL BE 6 KTS OR LESS
AND TREND TOWARD TYPICAL DIURNAL DIRECTIONS THROUGH TONIGHT.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

UPDATE....GORELOW
SHORT TERM/AVIATION...STACHELSKI
LONG TERM...MORGAN

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER











000
FXUS65 KVEF 191730 AAA
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
930 AM PST FRI DEC 19 2014

.SYNOPSIS...A WEAK SYSTEM WILL MOVE ACROSS THE AREA TODAY THROUGH
SATURDAY MARKED MAINLY BY AN INCREASE IN CLOUD COVER. A FEW LIGHT
SHOWERS WILL BE POSSIBLE IN THE HIGHER ELEVATIONS OF THE SOUTHERN
GREAT BASIN. HIGH PRESSURE IS EXPECTED TO STRENGTHEN OFF THE COAST
OF CALIFORNIA ON SUNDAY AND HOLD THROUGH TUESDAY KEEPING THE AREA
DRY AND MILD. ANOTHER SYSTEM MAY IMPACT THE AREA CHRISTMAS EVE INTO
CHRISTMAS DAY.
&&

.UPDATE...BATCH OF THICK HIGH CLOUDS CURRENTLY PUSHING THROUGH THE
EASTERN CWA WITH ANOTHER BATCH OF THICK HIGH CLOUDS MOVING THROUGH
THE WESTERN HALF. IN BETWEEN BASICALLY SEEING MOSTLY SUNNY SKIES
WITH JUST THIN HIGH CLOUDS. HAVE CHANGED SKY GRIDS TO BETTER REFLECT
CURRENT CONDITIONS. EVERYTHING ELSE IN GOOD SHAPE.
&&

PREV DISCUSSION
223 AM PST FRI DEC 19 2014

.SHORT TERM...TODAY THROUGH SUNDAY NIGHT.

CLOUDS ARE ONCE AGAIN IN THE FORECAST FOR TODAY AS ANOTHER MID/UPPER
LEVEL TROUGH ROLLS ON IN FROM THE PACIFIC. MOST OF THE MOISTURE WITH
THIS INCOMING SYSTEM WILL REMAIN ABOVE 15000 FEET WHICH WILL
TRANSLATE INTO A LOT OF HIGH LEVEL CLOUDS ACROSS MOST OF THE AREA
TODAY FOLLOWED BY MID AND HIGH LEVEL CLOUDS AS THIS SYSTEM PASSES
ACROSS THE AREA TONIGHT INTO SATURDAY. IT IS WORTH NOTING THAT SO
FAR THIS MONTH LAS VEGAS HAS ONLY HAD 1 DAY THAT COUNTS AS CLEAR
BASED ON SUNRISE TO SUNSET AVERAGE SKY COVER OF 30 PERCENT OR LESS.
NEITHER TODAY OR TOMORROW WILL ADD TO THAT COUNT. ACROSS THE HIGHER
ELEVATIONS OF THE SOUTHERN GREAT BASIN A FEW LIGHT SHOWERS MAY BE
SQUEEZED OUT LATE THIS AFTERNOON THROUGH SATURDAY. SNOW LEVELS WILL
BE BETWEEN 6000 AND 6500 FEET. TEMPS TODAY SHOULD BE CLOSE TO WHAT
WE SAW YESTERDAY WITH NOT MUCH GAIN EXPECTED DUE TO THE INCREASE IN
CLOUDS. TEMPS ON SATURDAY LOOK ABOUT THE SAME AS TODAY BASED ON
FORECAST SOUNDINGS. A BLEND OF THE BETTER PERFORMING BIAS CORRECTED
CONS MODELS AND MOS GUIDANCE WAS USED FOR TEMPS.

HIGH PRESSURE ALOFT IS EXPECTED TO BUILD INTO THE EASTERN PACIFIC
OFF OF CALIFORNIA SATURDAY NIGHT THROUGH SUNDAY NIGHT AND
STRENGTHEN. THIS WILL KEEP THE AREA DRY WITH A WARMING TREND,
HOWEVER, THIS WILL SET UP ENOUGH OF AN INVERSION TO KEEP THE LOWER
VALLEYS WEAKLY MIXED AND THUS AREAS BELOW THE INVERSION HEIGHT WILL
ONLY WARM UP MODESTLY TO ABOUT 4-6 DEGREES ABOVE NORMAL AT BEST.
SURFACE PRESSURE GRADIENTS TIGHTEN STARTING SUNDAY NIGHT AS A
SURFACE HIGH SETTLES INTO NORTHERN NEVADA. THIS WILL INCREASE WINDS
SOME IN THE COLORADO RIVER VALLEY.

.LONG TERM...MONDAY THROUGH CHRISTMAS DAY.

STRONG HIGH PRESSURE OVER THE EASTERN PACIFIC WILL BE THE MAIN
FEATURE MONDAY AND TUESDAY. NORTHERLY FLOW DOWN THE FRONT SIDE OF
THE RIDGE WILL RESULT IN LOCALLY BREEZY NORTH WINDS MONDAY AND
TUESDAY...ESPECIALLY DOWN THE COLORADO RIVER VALLEY. THE ENHANCED
MIXING COULD ALSO BRING SOME UNSEASONABLY WARM WEATHER TO THE WINDY
SPOTS. BY TUESDAY NIGHT THE MODELS START TO DIVERGE A BIT...BUT
AGREE ON A SHORTWAVE TROUGH APPROACHING THE PACIFIC NORTHWEST. THIS
WILL WEAKEN THE RIDGE AND REVERSE THE PRESSURE GRADIENTS AS IT
SWINGS TOWARD NORTHERN CALIFORNIA WEDNESDAY. TIMING AND STRENGTH
DETAILS ARE UNCLEAR...BUT THERE IS SOME CHANCE OF STRONG WESTERLY
WINDS WEDNESDAY AND/OR CHRISTMAS DAY AS THE STORM ROLLS THROUGH THE
GREAT BASIN. CANNOT RULE OUT SOME PRECIP CHANCES AS WELL...BUT FOR
NOW LIMITED ANY MENTION OF WEATHER TO THE SOUTHERN GREAT BASIN. IF
THE STORM ACTUALLY TRACKS FARTHER NORTH OR EAST...IMPACTS WOULD BE
LESS...BUT IF IT TRACKS FARTHER SOUTH OR WEST...THE MAIN FOCUS COULD
SHIFT FROM WIND TO PRECIP. EITHER WAY...TEMPERATURES WILL COME DOWN
QUITE A BIT FROM TUESDAY TO CHRISTMAS DAY.
&&

.AVIATION...FOR MCCARRAN...MAINLY BKN CLOUDS WITH BASES LOWERING
FROM AROUND 25K FEET TO 15K FEET FT ARE EXPECTED THROUGH THIS
EVENING. WINDS SHOULD BE 6 KTS OR LESS AND FAVOR TYPICAL DIURNAL
DIRECTIONAL TRENDS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...SCT-BKN CLOUDS AOA 25K FEET WITH BASES LOWERING TO
10-15K FEET THROUGH TONIGHT. THE LOWEST BASES THIS AFTERNOON INTO
TONIGHT SHOULD BE IN AND AROUND KBIH. WINDS WILL BE 6 KTS OR LESS
AND TREND TOWARD TYPICAL DIURNAL DIRECTIONS THROUGH TONIGHT.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

UPDATE....GORELOW
SHORT TERM/AVIATION...STACHELSKI
LONG TERM...MORGAN

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER












000
FXUS65 KVEF 191024
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
223 AM PST FRI DEC 19 2014

.SYNOPSIS...A WEAK SYSTEM WILL MOVE ACROSS THE AREA TODAY THROUGH
SATURDAY MARKED MAINLY BY AN INCREASE IN CLOUD COVER. A FEW LIGHT
SHOWERS WILL BE POSSIBLE IN THE HIGHER ELEVATIONS OF THE SOUTHERN
GREAT BASIN. HIGH PRESSURE IS EXPECTED TO STRENGTHEN OFF THE COAST
OF CALIFORNIA ON SUNDAY AND HOLD THROUGH TUESDAY KEEPING THE AREA
DRY AND MILD. ANOTHER SYSTEM MAY IMPACT THE AREA CHRISTMAS EVE INTO
CHRISTMAS DAY.
&&

.SHORT TERM...TODAY THROUGH SUNDAY NIGHT.

CLOUDS ARE ONCE AGAIN IN THE FORECAST FOR TODAY AS ANOTHER MID/UPPER
LEVEL TROUGH ROLLS ON IN FROM THE PACIFIC. MOST OF THE MOISTURE WITH
THIS INCOMING SYSTEM WILL REMAIN ABOVE 15000 FEET WHICH WILL
TRANSLATE INTO A LOT OF HIGH LEVEL CLOUDS ACROSS MOST OF THE AREA
TODAY FOLLOWED BY MID AND HIGH LEVEL CLOUDS AS THIS SYSTEM PASSES
ACROSS THE AREA TONIGHT INTO SATURDAY. IT IS WORTH NOTING THAT SO
FAR THIS MONTH LAS VEGAS HAS ONLY HAD 1 DAY THAT COUNTS AS CLEAR
BASED ON SUNRISE TO SUNSET AVERAGE SKY COVER OF 30 PERCENT OR LESS.
NEITHER TODAY OR TOMORROW WILL ADD TO THAT COUNT. ACROSS THE HIGHER
ELEVATIONS OF THE SOUTHERN GREAT BASIN A FEW LIGHT SHOWERS MAY BE
SQUEEZED OUT LATE THIS AFTERNOON THROUGH SATURDAY. SNOW LEVELS WILL
BE BETWEEN 6000 AND 6500 FEET. TEMPS TODAY SHOULD BE CLOSE TO WHAT
WE SAW YESTERDAY WITH NOT MUCH GAIN EXPECTED DUE TO THE INCREASE IN
CLOUDS. TEMPS ON SATURDAY LOOK ABOUT THE SAME AS TODAY BASED ON
FORECAST SOUNDINGS. A BLEND OF THE BETTER PERFORMING BIAS CORRECTED
CONS MODELS AND MOS GUIDANCE WAS USED FOR TEMPS.

HIGH PRESSURE ALOFT IS EXPECTED TO BUILD INTO THE EASTERN PACIFIC
OFF OF CALIFORNIA SATURDAY NIGHT THROUGH SUNDAY NIGHT AND
STRENGTHEN. THIS WILL KEEP THE AREA DRY WITH A WARMING TREND,
HOWEVER, THIS WILL SET UP ENOUGH OF AN INVERSION TO KEEP THE LOWER
VALLEYS WEAKLY MIXED AND THUS AREAS BELOW THE INVERSION HEIGHT WILL
ONLY WARM UP MODESTLY TO ABOUT 4-6 DEGREES ABOVE NORMAL AT BEST.
SURFACE PRESSURE GRADIENTS TIGHTEN STARTING SUNDAY NIGHT AS A
SURFACE HIGH SETTLES INTO NORTHERN NEVADA. THIS WILL INCREASE WINDS
SOME IN THE COLORADO RIVER VALLEY.

.LONG TERM...MONDAY THROUGH CHRISTMAS DAY.

STRONG HIGH PRESSURE OVER THE EASTERN PACIFIC WILL BE THE MAIN
FEATURE MONDAY AND TUESDAY. NORTHERLY FLOW DOWN THE FRONT SIDE OF
THE RIDGE WILL RESULT IN LOCALLY BREEZY NORTH WINDS MONDAY AND
TUESDAY...ESPECIALLY DOWN THE COLORADO RIVER VALLEY. THE ENHANCED
MIXING COULD ALSO BRING SOME UNSEASONABLY WARM WEATHER TO THE WINDY
SPOTS. BY TUESDAY NIGHT THE MODELS START TO DIVERGE A BIT...BUT
AGREE ON A SHORTWAVE TROUGH APPROACHING THE PACIFIC NORTHWEST. THIS
WILL WEAKEN THE RIDGE AND REVERSE THE PRESSURE GRADIENTS AS IT
SWINGS TOWARD NORTHERN CALIFORNIA WEDNESDAY. TIMING AND STRENGTH
DETAILS ARE UNCLEAR...BUT THERE IS SOME CHANCE OF STRONG WESTERLY
WINDS WEDNESDAY AND/OR CHRISTMAS DAY AS THE STORM ROLLS THROUGH THE
GREAT BASIN. CANNOT RULE OUT SOME PRECIP CHANCES AS WELL...BUT FOR
NOW LIMITED ANY MENTION OF WEATHER TO THE SOUTHERN GREAT BASIN. IF
THE STORM ACTUALLY TRACKS FARTHER NORTH OR EAST...IMPACTS WOULD BE
LESS...BUT IF IT TRACKS FARTHER SOUTH OR WEST...THE MAIN FOCUS COULD
SHIFT FROM WIND TO PRECIP. EITHER WAY...TEMPERATURES WILL COME DOWN
QUITE A BIT FROM TUESDAY TO CHRISTMAS DAY.
&&

.AVIATION...FOR MCCARRAN...MAINLY BKN CLOUDS WITH BASES LOWERING
FROM AROUND 25K FEET TO 15K FEET FT ARE EXPECTED THROUGH THIS
EVENING. WINDS SHOULD BE 6 KTS OR LESS AND FAVOR TYPICAL DIURNAL
DIRECTIONAL TRENDS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...PATCHY BR/FG IN AREAS FROM KIGM NORTH AND EAST
INCLUDING IN AND AROUND KACZ. VSBY HERE MAY BE MVFR OR LOWER.
SCT-BKN CLOUDS AOA 25K FEET WITH BASES LOWERING TO 10-15K FEET
THROUGH TONIGHT. THE LOWEST BASES THIS AFTERNOON INTO TONIGHT SHOULD
BE IN AND AROUND KBIH. WINDS WILL BE 6 KTS OR LESS AND TREND TOWARD
TYPICAL DIURNAL DIRECTIONS THROUGH TONIGHT.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...MORGAN

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER








000
FXUS65 KVEF 191024
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
223 AM PST FRI DEC 19 2014

.SYNOPSIS...A WEAK SYSTEM WILL MOVE ACROSS THE AREA TODAY THROUGH
SATURDAY MARKED MAINLY BY AN INCREASE IN CLOUD COVER. A FEW LIGHT
SHOWERS WILL BE POSSIBLE IN THE HIGHER ELEVATIONS OF THE SOUTHERN
GREAT BASIN. HIGH PRESSURE IS EXPECTED TO STRENGTHEN OFF THE COAST
OF CALIFORNIA ON SUNDAY AND HOLD THROUGH TUESDAY KEEPING THE AREA
DRY AND MILD. ANOTHER SYSTEM MAY IMPACT THE AREA CHRISTMAS EVE INTO
CHRISTMAS DAY.
&&

.SHORT TERM...TODAY THROUGH SUNDAY NIGHT.

CLOUDS ARE ONCE AGAIN IN THE FORECAST FOR TODAY AS ANOTHER MID/UPPER
LEVEL TROUGH ROLLS ON IN FROM THE PACIFIC. MOST OF THE MOISTURE WITH
THIS INCOMING SYSTEM WILL REMAIN ABOVE 15000 FEET WHICH WILL
TRANSLATE INTO A LOT OF HIGH LEVEL CLOUDS ACROSS MOST OF THE AREA
TODAY FOLLOWED BY MID AND HIGH LEVEL CLOUDS AS THIS SYSTEM PASSES
ACROSS THE AREA TONIGHT INTO SATURDAY. IT IS WORTH NOTING THAT SO
FAR THIS MONTH LAS VEGAS HAS ONLY HAD 1 DAY THAT COUNTS AS CLEAR
BASED ON SUNRISE TO SUNSET AVERAGE SKY COVER OF 30 PERCENT OR LESS.
NEITHER TODAY OR TOMORROW WILL ADD TO THAT COUNT. ACROSS THE HIGHER
ELEVATIONS OF THE SOUTHERN GREAT BASIN A FEW LIGHT SHOWERS MAY BE
SQUEEZED OUT LATE THIS AFTERNOON THROUGH SATURDAY. SNOW LEVELS WILL
BE BETWEEN 6000 AND 6500 FEET. TEMPS TODAY SHOULD BE CLOSE TO WHAT
WE SAW YESTERDAY WITH NOT MUCH GAIN EXPECTED DUE TO THE INCREASE IN
CLOUDS. TEMPS ON SATURDAY LOOK ABOUT THE SAME AS TODAY BASED ON
FORECAST SOUNDINGS. A BLEND OF THE BETTER PERFORMING BIAS CORRECTED
CONS MODELS AND MOS GUIDANCE WAS USED FOR TEMPS.

HIGH PRESSURE ALOFT IS EXPECTED TO BUILD INTO THE EASTERN PACIFIC
OFF OF CALIFORNIA SATURDAY NIGHT THROUGH SUNDAY NIGHT AND
STRENGTHEN. THIS WILL KEEP THE AREA DRY WITH A WARMING TREND,
HOWEVER, THIS WILL SET UP ENOUGH OF AN INVERSION TO KEEP THE LOWER
VALLEYS WEAKLY MIXED AND THUS AREAS BELOW THE INVERSION HEIGHT WILL
ONLY WARM UP MODESTLY TO ABOUT 4-6 DEGREES ABOVE NORMAL AT BEST.
SURFACE PRESSURE GRADIENTS TIGHTEN STARTING SUNDAY NIGHT AS A
SURFACE HIGH SETTLES INTO NORTHERN NEVADA. THIS WILL INCREASE WINDS
SOME IN THE COLORADO RIVER VALLEY.

.LONG TERM...MONDAY THROUGH CHRISTMAS DAY.

STRONG HIGH PRESSURE OVER THE EASTERN PACIFIC WILL BE THE MAIN
FEATURE MONDAY AND TUESDAY. NORTHERLY FLOW DOWN THE FRONT SIDE OF
THE RIDGE WILL RESULT IN LOCALLY BREEZY NORTH WINDS MONDAY AND
TUESDAY...ESPECIALLY DOWN THE COLORADO RIVER VALLEY. THE ENHANCED
MIXING COULD ALSO BRING SOME UNSEASONABLY WARM WEATHER TO THE WINDY
SPOTS. BY TUESDAY NIGHT THE MODELS START TO DIVERGE A BIT...BUT
AGREE ON A SHORTWAVE TROUGH APPROACHING THE PACIFIC NORTHWEST. THIS
WILL WEAKEN THE RIDGE AND REVERSE THE PRESSURE GRADIENTS AS IT
SWINGS TOWARD NORTHERN CALIFORNIA WEDNESDAY. TIMING AND STRENGTH
DETAILS ARE UNCLEAR...BUT THERE IS SOME CHANCE OF STRONG WESTERLY
WINDS WEDNESDAY AND/OR CHRISTMAS DAY AS THE STORM ROLLS THROUGH THE
GREAT BASIN. CANNOT RULE OUT SOME PRECIP CHANCES AS WELL...BUT FOR
NOW LIMITED ANY MENTION OF WEATHER TO THE SOUTHERN GREAT BASIN. IF
THE STORM ACTUALLY TRACKS FARTHER NORTH OR EAST...IMPACTS WOULD BE
LESS...BUT IF IT TRACKS FARTHER SOUTH OR WEST...THE MAIN FOCUS COULD
SHIFT FROM WIND TO PRECIP. EITHER WAY...TEMPERATURES WILL COME DOWN
QUITE A BIT FROM TUESDAY TO CHRISTMAS DAY.
&&

.AVIATION...FOR MCCARRAN...MAINLY BKN CLOUDS WITH BASES LOWERING
FROM AROUND 25K FEET TO 15K FEET FT ARE EXPECTED THROUGH THIS
EVENING. WINDS SHOULD BE 6 KTS OR LESS AND FAVOR TYPICAL DIURNAL
DIRECTIONAL TRENDS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...PATCHY BR/FG IN AREAS FROM KIGM NORTH AND EAST
INCLUDING IN AND AROUND KACZ. VSBY HERE MAY BE MVFR OR LOWER.
SCT-BKN CLOUDS AOA 25K FEET WITH BASES LOWERING TO 10-15K FEET
THROUGH TONIGHT. THE LOWEST BASES THIS AFTERNOON INTO TONIGHT SHOULD
BE IN AND AROUND KBIH. WINDS WILL BE 6 KTS OR LESS AND TREND TOWARD
TYPICAL DIURNAL DIRECTIONS THROUGH TONIGHT.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...MORGAN

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER









000
FXUS65 KVEF 191024
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
223 AM PST FRI DEC 19 2014

.SYNOPSIS...A WEAK SYSTEM WILL MOVE ACROSS THE AREA TODAY THROUGH
SATURDAY MARKED MAINLY BY AN INCREASE IN CLOUD COVER. A FEW LIGHT
SHOWERS WILL BE POSSIBLE IN THE HIGHER ELEVATIONS OF THE SOUTHERN
GREAT BASIN. HIGH PRESSURE IS EXPECTED TO STRENGTHEN OFF THE COAST
OF CALIFORNIA ON SUNDAY AND HOLD THROUGH TUESDAY KEEPING THE AREA
DRY AND MILD. ANOTHER SYSTEM MAY IMPACT THE AREA CHRISTMAS EVE INTO
CHRISTMAS DAY.
&&

.SHORT TERM...TODAY THROUGH SUNDAY NIGHT.

CLOUDS ARE ONCE AGAIN IN THE FORECAST FOR TODAY AS ANOTHER MID/UPPER
LEVEL TROUGH ROLLS ON IN FROM THE PACIFIC. MOST OF THE MOISTURE WITH
THIS INCOMING SYSTEM WILL REMAIN ABOVE 15000 FEET WHICH WILL
TRANSLATE INTO A LOT OF HIGH LEVEL CLOUDS ACROSS MOST OF THE AREA
TODAY FOLLOWED BY MID AND HIGH LEVEL CLOUDS AS THIS SYSTEM PASSES
ACROSS THE AREA TONIGHT INTO SATURDAY. IT IS WORTH NOTING THAT SO
FAR THIS MONTH LAS VEGAS HAS ONLY HAD 1 DAY THAT COUNTS AS CLEAR
BASED ON SUNRISE TO SUNSET AVERAGE SKY COVER OF 30 PERCENT OR LESS.
NEITHER TODAY OR TOMORROW WILL ADD TO THAT COUNT. ACROSS THE HIGHER
ELEVATIONS OF THE SOUTHERN GREAT BASIN A FEW LIGHT SHOWERS MAY BE
SQUEEZED OUT LATE THIS AFTERNOON THROUGH SATURDAY. SNOW LEVELS WILL
BE BETWEEN 6000 AND 6500 FEET. TEMPS TODAY SHOULD BE CLOSE TO WHAT
WE SAW YESTERDAY WITH NOT MUCH GAIN EXPECTED DUE TO THE INCREASE IN
CLOUDS. TEMPS ON SATURDAY LOOK ABOUT THE SAME AS TODAY BASED ON
FORECAST SOUNDINGS. A BLEND OF THE BETTER PERFORMING BIAS CORRECTED
CONS MODELS AND MOS GUIDANCE WAS USED FOR TEMPS.

HIGH PRESSURE ALOFT IS EXPECTED TO BUILD INTO THE EASTERN PACIFIC
OFF OF CALIFORNIA SATURDAY NIGHT THROUGH SUNDAY NIGHT AND
STRENGTHEN. THIS WILL KEEP THE AREA DRY WITH A WARMING TREND,
HOWEVER, THIS WILL SET UP ENOUGH OF AN INVERSION TO KEEP THE LOWER
VALLEYS WEAKLY MIXED AND THUS AREAS BELOW THE INVERSION HEIGHT WILL
ONLY WARM UP MODESTLY TO ABOUT 4-6 DEGREES ABOVE NORMAL AT BEST.
SURFACE PRESSURE GRADIENTS TIGHTEN STARTING SUNDAY NIGHT AS A
SURFACE HIGH SETTLES INTO NORTHERN NEVADA. THIS WILL INCREASE WINDS
SOME IN THE COLORADO RIVER VALLEY.

.LONG TERM...MONDAY THROUGH CHRISTMAS DAY.

STRONG HIGH PRESSURE OVER THE EASTERN PACIFIC WILL BE THE MAIN
FEATURE MONDAY AND TUESDAY. NORTHERLY FLOW DOWN THE FRONT SIDE OF
THE RIDGE WILL RESULT IN LOCALLY BREEZY NORTH WINDS MONDAY AND
TUESDAY...ESPECIALLY DOWN THE COLORADO RIVER VALLEY. THE ENHANCED
MIXING COULD ALSO BRING SOME UNSEASONABLY WARM WEATHER TO THE WINDY
SPOTS. BY TUESDAY NIGHT THE MODELS START TO DIVERGE A BIT...BUT
AGREE ON A SHORTWAVE TROUGH APPROACHING THE PACIFIC NORTHWEST. THIS
WILL WEAKEN THE RIDGE AND REVERSE THE PRESSURE GRADIENTS AS IT
SWINGS TOWARD NORTHERN CALIFORNIA WEDNESDAY. TIMING AND STRENGTH
DETAILS ARE UNCLEAR...BUT THERE IS SOME CHANCE OF STRONG WESTERLY
WINDS WEDNESDAY AND/OR CHRISTMAS DAY AS THE STORM ROLLS THROUGH THE
GREAT BASIN. CANNOT RULE OUT SOME PRECIP CHANCES AS WELL...BUT FOR
NOW LIMITED ANY MENTION OF WEATHER TO THE SOUTHERN GREAT BASIN. IF
THE STORM ACTUALLY TRACKS FARTHER NORTH OR EAST...IMPACTS WOULD BE
LESS...BUT IF IT TRACKS FARTHER SOUTH OR WEST...THE MAIN FOCUS COULD
SHIFT FROM WIND TO PRECIP. EITHER WAY...TEMPERATURES WILL COME DOWN
QUITE A BIT FROM TUESDAY TO CHRISTMAS DAY.
&&

.AVIATION...FOR MCCARRAN...MAINLY BKN CLOUDS WITH BASES LOWERING
FROM AROUND 25K FEET TO 15K FEET FT ARE EXPECTED THROUGH THIS
EVENING. WINDS SHOULD BE 6 KTS OR LESS AND FAVOR TYPICAL DIURNAL
DIRECTIONAL TRENDS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...PATCHY BR/FG IN AREAS FROM KIGM NORTH AND EAST
INCLUDING IN AND AROUND KACZ. VSBY HERE MAY BE MVFR OR LOWER.
SCT-BKN CLOUDS AOA 25K FEET WITH BASES LOWERING TO 10-15K FEET
THROUGH TONIGHT. THE LOWEST BASES THIS AFTERNOON INTO TONIGHT SHOULD
BE IN AND AROUND KBIH. WINDS WILL BE 6 KTS OR LESS AND TREND TOWARD
TYPICAL DIURNAL DIRECTIONS THROUGH TONIGHT.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...MORGAN

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER








000
FXUS65 KVEF 190525
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
925 PM PST THU DEC 18 2014

.SYNOPSIS...A WEAK STORM SYSTEM WILL BRING CLOUDS AND A FEW SHOWERS
TO THE SIERRA AND SOUTHERN GREAT BASIN FRIDAY INTO FRIDAY NIGHT.
FOR THE WEEKEND AND INTO THE MIDDLE OF NEXT WEEK...HIGH PRESSURE
WILL REBUILD ACROSS THE REGION WITH WARMING TEMPERATURES AND DRY
WEATHER EXPECTED.
&&

.UPDATE...THE TEMP-DEWPOINT SPREAD HAS BECOME VERY, VERY SMALL
ACROSS PARTS OF MOHAVE COUNTY IN THE LAST FEW HOURS AND WINDS REMAIN
VERY LIGHT - IF NOT CALM. LOOKING AT FORECAST SOUNDINGS IN BUFKIT
FROM THE RAP, THERE IS SOME POTENTIAL FOR FOG TO DEVELOP TONIGHT IN
AREAS FROM KINGMAN ON NORTH AND EAST AND THE GIVEN THE LATEST
OBSERVATIONS, THIS SEEMS A REASONABLE POSSIBILITY AND PATCHY FOG WAS
ADDED TO THE FORECAST IN THIS AREA THROUGH FRIDAY MORNING. MOST AT
RISK FOR FOG WILL BE THE COLORADO CITY AREA.

OTHERWISE THE NEXT WAVE OF CIRRUS IS WORKING IN ALREADY FROM THE
WEST. THE SKY GRIDS WERE ADJUSTED TO REMOVE CLOUDS IN THE EAST EARLY
TONIGHT WHERE IT IS PRESENTLY CLEAR AND ADJUSTED UP IN THE WEST AND
ACROSS THE REST OF THE AREA SLIGHTLY FOR THE DAYTIME HOURS ON FRIDAY.
&&

.AVIATION...FOR MCCARRAN...CLOUDS INCREASING AOA 25K FT LATE TONIGHT
WITH LIGHT DRAINAGE WINDS. MAINLY BKN CLOUDS ABOVE 15K FT CAN BE
EXPECTED BY FRIDAY MORNING WITH LIGHT AND VARIABLE WINDS EXPECTED.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...SCT-BKN CLOUDS AOA 25K FEET ESPECIALLY ACROSS SOUTHEAST
CALIFORNIA AND SOUTHERN NEVADA OVERNIGHT. PATCHY BR/FG IN AREAS FROM
KIGM NORTH AND EAST INCLUDING IN AND AROUND KACZ. VSBY HERE MAY BE
MVFR OR LOWER. SCT-BKN CLOUDS AOA 15K FEET ON FRIDAY. WINDS WILL BE
6 KTS OR LESS AND TREND TOWARD TYPICAL DIURNAL DIRECTIONS THROUGH
FRIDAY EVENING.
&&

.PREVIOUS DISCUSSION...
ISSUED AT 210 PM PST THU DEC 18 2014

.SHORT TERM...FRIDAY.

HIGH CLOUDS WILL STREAM OVERHEAD IN ADVANCE OF THE NEXT DISTURBANCE
TO AFFECT THE AREA FRIDAY INTO FRIDAY NIGHT. THIS SYSTEM IS VERY
WEAK AND MOISTURE STARVED WITH ONLY SLIGHT CHANCES FOR SHOWERS
ACROSS THE HIGHEST TERRAIN OF THE SIERRA AND SOUTHERN GREAT BASIN.
IT WILL HOWEVER BRING A BATCH OF MID AND HIGH LEVEL CLOUDS TO THE
REGION ON FRIDAY AND FRIDAY NIGHT.

LONG TERM...SATURDAY THROUGH THURSDAY.

BEGINNING SATURDAY A HIGH PRESSURE RIDGE WILL BEGIN TO INTENSIFY
OVER THE EASTERN PACIFIC. HIGH CLOUD COVER WILL CONTINUE TO STREAM
OVERHEAD AT TIMES BUT AS HEIGHTS RISE TEMPERATURES WILL BE ON THE
REBOUND EACH DAY...RISING INTO THE 60S BY SUNDAY.

MIDWEEK ONWARD...NORTHERN STREAM ENERGY DIVING SOUTH FROM WESTERN
CANADA LOOKS TO TRACK INTO THE INTERMOUNTAIN WEST DELIVERING A BLAST
OF COOLER TEMPERATURES LATE IN THE WEEK. HOW STRONG THIS WAVE IS HAS
BEEN DEBATED AMONG THE MAJOR FORECAST MODELS BUT EVEN AS AN OPEN
WAVE IT SHOULD DRAG A DECENT COLD FRONT THROUGH THE GREAT BASIN AND
INTO THE SOUTHWEST.  FOR NOW I HAVE KEPT THE FORECAST DRY BUT
TEMPERED TEMPERATURES DOWNWARD WITH THE PASSAGE OF THE COLD FRONT
NEXT THURSDAY.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

UPDATE/AVIATION...STACHELSKI
PREVIOUS...OUTLER

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER







000
FXUS65 KVEF 190525
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
925 PM PST THU DEC 18 2014

.SYNOPSIS...A WEAK STORM SYSTEM WILL BRING CLOUDS AND A FEW SHOWERS
TO THE SIERRA AND SOUTHERN GREAT BASIN FRIDAY INTO FRIDAY NIGHT.
FOR THE WEEKEND AND INTO THE MIDDLE OF NEXT WEEK...HIGH PRESSURE
WILL REBUILD ACROSS THE REGION WITH WARMING TEMPERATURES AND DRY
WEATHER EXPECTED.
&&

.UPDATE...THE TEMP-DEWPOINT SPREAD HAS BECOME VERY, VERY SMALL
ACROSS PARTS OF MOHAVE COUNTY IN THE LAST FEW HOURS AND WINDS REMAIN
VERY LIGHT - IF NOT CALM. LOOKING AT FORECAST SOUNDINGS IN BUFKIT
FROM THE RAP, THERE IS SOME POTENTIAL FOR FOG TO DEVELOP TONIGHT IN
AREAS FROM KINGMAN ON NORTH AND EAST AND THE GIVEN THE LATEST
OBSERVATIONS, THIS SEEMS A REASONABLE POSSIBILITY AND PATCHY FOG WAS
ADDED TO THE FORECAST IN THIS AREA THROUGH FRIDAY MORNING. MOST AT
RISK FOR FOG WILL BE THE COLORADO CITY AREA.

OTHERWISE THE NEXT WAVE OF CIRRUS IS WORKING IN ALREADY FROM THE
WEST. THE SKY GRIDS WERE ADJUSTED TO REMOVE CLOUDS IN THE EAST EARLY
TONIGHT WHERE IT IS PRESENTLY CLEAR AND ADJUSTED UP IN THE WEST AND
ACROSS THE REST OF THE AREA SLIGHTLY FOR THE DAYTIME HOURS ON FRIDAY.
&&

.AVIATION...FOR MCCARRAN...CLOUDS INCREASING AOA 25K FT LATE TONIGHT
WITH LIGHT DRAINAGE WINDS. MAINLY BKN CLOUDS ABOVE 15K FT CAN BE
EXPECTED BY FRIDAY MORNING WITH LIGHT AND VARIABLE WINDS EXPECTED.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...SCT-BKN CLOUDS AOA 25K FEET ESPECIALLY ACROSS SOUTHEAST
CALIFORNIA AND SOUTHERN NEVADA OVERNIGHT. PATCHY BR/FG IN AREAS FROM
KIGM NORTH AND EAST INCLUDING IN AND AROUND KACZ. VSBY HERE MAY BE
MVFR OR LOWER. SCT-BKN CLOUDS AOA 15K FEET ON FRIDAY. WINDS WILL BE
6 KTS OR LESS AND TREND TOWARD TYPICAL DIURNAL DIRECTIONS THROUGH
FRIDAY EVENING.
&&

.PREVIOUS DISCUSSION...
ISSUED AT 210 PM PST THU DEC 18 2014

.SHORT TERM...FRIDAY.

HIGH CLOUDS WILL STREAM OVERHEAD IN ADVANCE OF THE NEXT DISTURBANCE
TO AFFECT THE AREA FRIDAY INTO FRIDAY NIGHT. THIS SYSTEM IS VERY
WEAK AND MOISTURE STARVED WITH ONLY SLIGHT CHANCES FOR SHOWERS
ACROSS THE HIGHEST TERRAIN OF THE SIERRA AND SOUTHERN GREAT BASIN.
IT WILL HOWEVER BRING A BATCH OF MID AND HIGH LEVEL CLOUDS TO THE
REGION ON FRIDAY AND FRIDAY NIGHT.

LONG TERM...SATURDAY THROUGH THURSDAY.

BEGINNING SATURDAY A HIGH PRESSURE RIDGE WILL BEGIN TO INTENSIFY
OVER THE EASTERN PACIFIC. HIGH CLOUD COVER WILL CONTINUE TO STREAM
OVERHEAD AT TIMES BUT AS HEIGHTS RISE TEMPERATURES WILL BE ON THE
REBOUND EACH DAY...RISING INTO THE 60S BY SUNDAY.

MIDWEEK ONWARD...NORTHERN STREAM ENERGY DIVING SOUTH FROM WESTERN
CANADA LOOKS TO TRACK INTO THE INTERMOUNTAIN WEST DELIVERING A BLAST
OF COOLER TEMPERATURES LATE IN THE WEEK. HOW STRONG THIS WAVE IS HAS
BEEN DEBATED AMONG THE MAJOR FORECAST MODELS BUT EVEN AS AN OPEN
WAVE IT SHOULD DRAG A DECENT COLD FRONT THROUGH THE GREAT BASIN AND
INTO THE SOUTHWEST.  FOR NOW I HAVE KEPT THE FORECAST DRY BUT
TEMPERED TEMPERATURES DOWNWARD WITH THE PASSAGE OF THE COLD FRONT
NEXT THURSDAY.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

UPDATE/AVIATION...STACHELSKI
PREVIOUS...OUTLER

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER








000
FXUS65 KVEF 182210 CCA
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
210 PM PST THU DEC 18 2014

.SYNOPSIS...A WEAK STORM SYSTEM WILL BRING CLOUDS AND A FEW SHOWERS
TO THE SIERRA AND SOUTHERN GREAT BASIN FRIDAY INTO FRIDAY NIGHT.
FOR THE WEEKEND AND INTO THE MIDDLE OF NEXT WEEK...HIGH PRESSURE
WILL REBUILD ACROSS THE REGION WITH WARMING TEMPERATURES AND DRY
WEATHER EXPECTED.

&&

.SHORT TERM...TONIGHT THROUGH FRIDAY.

A FEW LIGHT SHOWERS REMAIN THIS AFTERNOON ACROSS THE AREA BUT FOR
THE MOST PART THINGS ARE QUICKLY WINDING DOWN.  WITH THE LOSS OF
SOLAR HEATING THIS EVENING....WHAT SHOWER ACTIVITY REMAINS WILL
DIMINISH RAPIDLY AFTER SUNSET.

HIGH CLOUDS WILL BEGIN TO STREAM OVERHEAD IN ADVANCE OF THE NEXT
DISTURBANCE TO AFFECT THE AREA FRIDAY INTO FRIDAY NIGHT. THIS SYSTEM
IS VERY WEAK AND MOISTURE STARVED WITH ONLY SLIGHT CHANCES FOR
SHOWERS ACROSS THE HIGHEST TERRAIN OF THE SIERRA AND SOUTHERN GREAT
BASIN.  IT WILL HOWEVER BRING A BATCH OF MID AND HIGH LEVEL CLOUDS
TO THE REGION ON FRIDAY AND FRIDAY NIGHT.

LONG TERM...SATURDAY THROUGH THURSDAY.

BEGINNING SATURDAY A HIGH PRESSURE RIDGE WILL BEGIN TO INTENSIFY
OVER THE EASTERN PACIFIC. HIGH CLOUD COVER WILL CONTINUE TO STREAM
OVERHEAD AT TIMES BUT AS HEIGHTS RISE TEMPERATURES WILL BE ON THE
REBOUND EACH DAY...RISING INTO THE 60S BY SUNDAY.

MIDWEEK ONWARD...NORTHERN STREAM ENERGY DIVING SOUTH FROM WESTERN
CANADA LOOKS TO TRACK INTO THE INTERMOUNTAIN WEST DELIVERING A BLAST
OF COOLER TEMPERATURES LATE IN THE WEEK. HOW STRONG THIS WAVE IS HAS
BEEN DEBATED AMONG THE MAJOR FORECAST MODELS BUT EVEN AS AN OPEN
WAVE IT SHOULD DRAG A DECENT COLD FRONT THROUGH THE GREAT BASIN AND
INTO THE SOUTHWEST.  FOR NOW I HAVE KEPT THE FORECAST DRY BUT
TEMPERED TEMPERATURES DOWNWARD WITH THE PASSAGE OF THE COLD FRONT
NEXT THURSDAY.

&&

.AVIATION...FOR MCCARRAN...CIGS HAVE BEEN SLOW TO RISE TODAY BUT
HAVE RECENTLY RISEN ABOVE 5KFT. SHOULD SEE CLOUDS CONTINUE TO
DECREASE THROUGH THE EVENING WITH PRIMARILY JUST SCATTERED HIGH
CLOUDS AOA 25KFT OVERNIGHT WITH LIGHT DRAINAGE WINDS. INCREASING
CLOUDS ABOVE 15KFT CAN BE EXPECTED BY FRIDAY MORNING WITH LIGHT AND
VARIABLE WINDS EXPECTED.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...DECREASING CLOUDS EXPECTED OVERNIGHT WITH THE EXCEPTION
OF SCATTERED HIGH CLOUDS ABOVE 25K FT. INCREASING CLOUDS ARE
EXPECTED FRIDAY ABOVE 15K FT BUT WINDS WILL REMAIN LIGHT.

&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...OUTLER
LONG TERM...OUTLER

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER













000
FXUS65 KVEF 182210 CCA
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
210 PM PST THU DEC 18 2014

.SYNOPSIS...A WEAK STORM SYSTEM WILL BRING CLOUDS AND A FEW SHOWERS
TO THE SIERRA AND SOUTHERN GREAT BASIN FRIDAY INTO FRIDAY NIGHT.
FOR THE WEEKEND AND INTO THE MIDDLE OF NEXT WEEK...HIGH PRESSURE
WILL REBUILD ACROSS THE REGION WITH WARMING TEMPERATURES AND DRY
WEATHER EXPECTED.

&&

.SHORT TERM...TONIGHT THROUGH FRIDAY.

A FEW LIGHT SHOWERS REMAIN THIS AFTERNOON ACROSS THE AREA BUT FOR
THE MOST PART THINGS ARE QUICKLY WINDING DOWN.  WITH THE LOSS OF
SOLAR HEATING THIS EVENING....WHAT SHOWER ACTIVITY REMAINS WILL
DIMINISH RAPIDLY AFTER SUNSET.

HIGH CLOUDS WILL BEGIN TO STREAM OVERHEAD IN ADVANCE OF THE NEXT
DISTURBANCE TO AFFECT THE AREA FRIDAY INTO FRIDAY NIGHT. THIS SYSTEM
IS VERY WEAK AND MOISTURE STARVED WITH ONLY SLIGHT CHANCES FOR
SHOWERS ACROSS THE HIGHEST TERRAIN OF THE SIERRA AND SOUTHERN GREAT
BASIN.  IT WILL HOWEVER BRING A BATCH OF MID AND HIGH LEVEL CLOUDS
TO THE REGION ON FRIDAY AND FRIDAY NIGHT.

LONG TERM...SATURDAY THROUGH THURSDAY.

BEGINNING SATURDAY A HIGH PRESSURE RIDGE WILL BEGIN TO INTENSIFY
OVER THE EASTERN PACIFIC. HIGH CLOUD COVER WILL CONTINUE TO STREAM
OVERHEAD AT TIMES BUT AS HEIGHTS RISE TEMPERATURES WILL BE ON THE
REBOUND EACH DAY...RISING INTO THE 60S BY SUNDAY.

MIDWEEK ONWARD...NORTHERN STREAM ENERGY DIVING SOUTH FROM WESTERN
CANADA LOOKS TO TRACK INTO THE INTERMOUNTAIN WEST DELIVERING A BLAST
OF COOLER TEMPERATURES LATE IN THE WEEK. HOW STRONG THIS WAVE IS HAS
BEEN DEBATED AMONG THE MAJOR FORECAST MODELS BUT EVEN AS AN OPEN
WAVE IT SHOULD DRAG A DECENT COLD FRONT THROUGH THE GREAT BASIN AND
INTO THE SOUTHWEST.  FOR NOW I HAVE KEPT THE FORECAST DRY BUT
TEMPERED TEMPERATURES DOWNWARD WITH THE PASSAGE OF THE COLD FRONT
NEXT THURSDAY.

&&

.AVIATION...FOR MCCARRAN...CIGS HAVE BEEN SLOW TO RISE TODAY BUT
HAVE RECENTLY RISEN ABOVE 5KFT. SHOULD SEE CLOUDS CONTINUE TO
DECREASE THROUGH THE EVENING WITH PRIMARILY JUST SCATTERED HIGH
CLOUDS AOA 25KFT OVERNIGHT WITH LIGHT DRAINAGE WINDS. INCREASING
CLOUDS ABOVE 15KFT CAN BE EXPECTED BY FRIDAY MORNING WITH LIGHT AND
VARIABLE WINDS EXPECTED.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...DECREASING CLOUDS EXPECTED OVERNIGHT WITH THE EXCEPTION
OF SCATTERED HIGH CLOUDS ABOVE 25K FT. INCREASING CLOUDS ARE
EXPECTED FRIDAY ABOVE 15K FT BUT WINDS WILL REMAIN LIGHT.

&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...OUTLER
LONG TERM...OUTLER

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER














000
FXUS65 KVEF 181652 CCA
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
900 AM PST THU DEC 18 2014

.SYNOPSIS...A FEW SHOWERS WILL LINGER ACROSS THE AREA THROUGH THIS
AFTERNOON AS A STORM SYSTEM DEPARTS TO THE EAST. ANOTHER SYSTEM WILL
PASS ACROSS THE AREA FRIDAY INTO SUNDAY BRINGING THE POTENTIAL FOR A
FEW LIGHT SHOWERS FRIDAY INTO SATURDAY FOLLOWED BY GUSTY NORTHWEST
TO NORTH WINDS ON SUNDAY. HIGH PRESSURE WILL KEEP THE AREA DRY
MONDAY THROUGH WEDNESDAY HOWEVER AN ADDITIONAL STORM SYSTEM MAY
AFFECT THE AREA ON CHRISTMAS DAY.
&&

.UPDATE...RAIN SHOWERS CONTINUE TO LINGER ACROSS THE REGION WITH
WIDESPREAD SHOWERS CURRENTLY ONGOING ACROSS LAKE MEAD AND PARTS OF
NORTHEASTERN CLARK COUNTY. MODELS HAVE DONE A POOR JOB HANDLING THE
DETAILS OF THIS SYSTEM WITH FAIRLY SIGNIFICANT RAINFALL TOTALS
OBSERVED OVERNIGHT ACROSS MUCH OF NORTHERN CLARK COUNTY. BETWEEN
ONE-QUARTER AND THREE-QUARTERS OF AN INCH OF RAIN HAVE FALLEN NEAR
MOAPA OVERNIGHT WITH A TENTH TO A HALF OF AN INCH FALLING IN THE FAR
NORTHWEST VEGAS VALLEY AND ALONG THE US-95 CORRIDOR BETWEEN VEGAS
AND INDIAN SPRINGS. EXPECT WHAT REMAINS OF THIS ACTIVITY TO SHIFT
EAST THIS AFTERNOON AS THE DISTURBANCE SHIFTS EASTWARD.  THE
FORECAST LOOKS TO BE IN GOOD SHAPE AND NO UPDATES ARE PLANNED THIS
MORNING.

.SHORT TERM...TODAY THROUGH FRIDAY NIGHT.

THERE ARE STILL A FEW SHOWERS AROUND MAINLY ACROSS SOUTHERN LINCOLN
AND NORTHERN CLARK COUNTIES AS WELL AS IN SOUTHERN MOHAVE COUNTY
EARLY THIS MORNING ON RADAR. OUR AREA REMAINS ON THE BACK SIDE OF A
DEPARTING MID/UPPER LEVEL TROUGH THIS MORNING. ONE LAST JET STREAK
WILL PASS ACROSS THE AREA LATE THIS MORNING INTO THIS AFTERNOON AND
WORK WITH WHATEVER MID-LEVEL ENERGY AND LOW AND MID-LEVEL MOISTURE
IS LEFT TO SQUEEZE OUT A FEW SHOWERS MAINLY ACROSS CLARK, LINCOLN,
MOHAVE AND FAR EASTERN SAN BERNARDINO COUNTIES. WHATEVER WE SEE WILL
NOT AMOUNT TO MUCH AND IN REALITY THE POP GRIDS THAT I CAME UP WITH
LOOK OVERDONE WITH THE AREAL COVERAGE OF POPS, BUT IT IS HARD TO
PINPOINT WHO WILL SEE ANY LIGHT PRECIPITATION IN THIS SORT OF
PATTERN. SNOW LEVELS WILL BE AROUND 5500 FEET. ANY CLOUDS THIS
MORNING SHOULD BREAK UP AND DECREASE IN COVERAGE TOWARD THE
AFTERNOON WITH LESS IN THE WAY OF LOWER AND MID-LEVEL CLOUD COVER
FOR TONIGHT. BOTH STATISTICAL MOS AND CONTINUITY LOOKED DECENT FOR
TEMPS TODAY AND TONIGHT. IF MCCARRAN DROPS BELOW 40 TONIGHT IT WOULD
ONLY BE THE SECOND TIME THIS MONTH AND 11TH TIME THIS YEAR THIS MARK
HAS BEEN REACHED.

A WEAK SHORTWAVE RIDGE WILL TRANSITION EAST ACROSS THE AREA TONIGHT
AND OPEN THE DOOR FOR ANOTHER SYSTEM TO ADVANCE IN FROM THE PACIFIC
ON FRIDAY. CIRRUS CLOUDS WILL FILL IN FROM THE WEST AND SPREAD EAST
THROUGH THE DAY. OVERALL THIS IS A RATHER MOISTURE STARVED SYSTEM
AND WE DO NOT EXPECT MUCH IN THE WAY OF SHOWERS EXCEPT ACROSS THE
HIGHER ELEVATIONS OF THE SOUTHERN GREAT BASIN FRIDAY AFTERNOON INTO
FRIDAY NIGHT. SNOW LEVELS SHOULD BE AROUND 6000 FEET. HIGH TEMPS ON
FRIDAY LOOK TO BE NEAR WHAT WE SEE TODAY AS THE THERMAL PROFILE IN
FORECAST SOUNDINGS SHOW NOT MUCH IN THE WAY OF CHANGE.

LONG TERM...SATURDAY THROUGH WEDNESDAY.

THE STORM TRACK WHICH HAS BEEN AFFECTING SOUTHERN NEVADA/SOUTHERN
CALIFORNIA THE PAST TWO WEEKS WILL SHIFT NORTHWARD OVER THE WEEKEND
AS A RIDGE OF HIGH PRESSURE BUILDS IN ACROSS CALIFORNIA/NEVADA. BUT
BEFORE IT DOES SO, THERE WILL BE A CHANCE OF SHOWERS ACROSS
NORTHERN/CENTRAL NEVADA SATURDAY WITH A SLIGHT CHANCE SPREADING AS
FAR SOUTH AS THE MOUNTAINS OF NORTHERN INYO, ESMERALDA, CENTRAL NYE
AND LINCOLN COUNTIES.

SUNDAY THROUGH WEDNESDAY THE REGION WILL LIE UNDER A DRY NORTHWEST
FLOW. NORTHWEST FLOW WILL REMAIN QUITE `DIRTY` WITH CLOUDINESS ON
SUNDAY, MORE SUNSHINE EXPECTED MONDAY/TUESDAY. NEXT WAVE OF CLOUDS
ARRIVES WEDNESDAY PRECEDING THE NEXT TROUGH. SURFACE HIGH
DEVELOPING OVER THE NORTHERN GREAT BASIN WILL LEAD TO AN INCREASE IN
NORTH BREEZES DOWN THE COLORADO RIVER VALLEY SOUTH OF HOOVER DAM
SUNDAY-TUESDAY. WATERS ON AREA LAKES WILL BECOME CHOPPY, OTHERWISE
NO IMPACTFUL WEATHER IS EXPECTED.

FOR THOSE TRAVELING AROUND CHRISTMAS, TROUGH DIGGING SOUTHWARD
THROUGH THE PAC NW CHRISTMAS EVE AND INTO THE GREAT BASIN CHRISTMAS
DAY MAY CAUSE SOME TRAVEL IMPACTS. STAY TUNED!
&&

.AVIATION...FOR MCCARRAN...UNLESS ANY SHOWERS PASS ACROSS OR NEAR
THE AIRPORT THIS MORNING CIGS SHOULD STAY BETWEEN 4K AND 6K FEET AND
GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET. CLOUD COVER SHOULD
TRANSITION TO MORE IN THE SCT RANGE BY THIS AFTERNOON. A FEW CLOUDS
AOB 10K FEET MAY LINGER INTO TONIGHT, HOWEVER ANOTHER ROUND OF
CLOUDS AOA 25K FEET WILL START TO SPREAD IN FROM THE WEST. WINDS
LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS AT 5 KTS OR LESS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...A FEW SHOWERS ARE POSSIBLE ACROSS CLARK, LINCOLN,
MOHAVE AND EASTERN SAN BERNARDINO COUNTIES THROUGH 18Z TODAY AND
THEN ACROSS MOHAVE COUNTY THROUGH 00Z FRIDAY. UNLESS ANY SHOWERS
PASS ACROSS OR NEAR A TERMINAL THIS MORNING CIGS SHOULD STAY BETWEEN
6K AND 8K FEET AND GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET.
CLOUD COVER SHOULD TRANSITION TO MORE IN THE SCT RANGE BY THIS
AFTERNOON. A FEW CLOUDS AOB 10K FEET MAY LINGER INTO TONIGHT,
HOWEVER ANOTHER ROUND OF CLOUDS AOA 25K FEET WILL START TO SPREAD IN
FROM THE WEST. WINDS LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS
AT 5 KTS OR LESS.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

UPDATE...OUTLER
SHORT TERM/AVIATION...STACHELSKI
LONG TERM...PIERCE

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER











000
FXUS65 KVEF 181652 CCA
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
900 AM PST THU DEC 18 2014

.SYNOPSIS...A FEW SHOWERS WILL LINGER ACROSS THE AREA THROUGH THIS
AFTERNOON AS A STORM SYSTEM DEPARTS TO THE EAST. ANOTHER SYSTEM WILL
PASS ACROSS THE AREA FRIDAY INTO SUNDAY BRINGING THE POTENTIAL FOR A
FEW LIGHT SHOWERS FRIDAY INTO SATURDAY FOLLOWED BY GUSTY NORTHWEST
TO NORTH WINDS ON SUNDAY. HIGH PRESSURE WILL KEEP THE AREA DRY
MONDAY THROUGH WEDNESDAY HOWEVER AN ADDITIONAL STORM SYSTEM MAY
AFFECT THE AREA ON CHRISTMAS DAY.
&&

.UPDATE...RAIN SHOWERS CONTINUE TO LINGER ACROSS THE REGION WITH
WIDESPREAD SHOWERS CURRENTLY ONGOING ACROSS LAKE MEAD AND PARTS OF
NORTHEASTERN CLARK COUNTY. MODELS HAVE DONE A POOR JOB HANDLING THE
DETAILS OF THIS SYSTEM WITH FAIRLY SIGNIFICANT RAINFALL TOTALS
OBSERVED OVERNIGHT ACROSS MUCH OF NORTHERN CLARK COUNTY. BETWEEN
ONE-QUARTER AND THREE-QUARTERS OF AN INCH OF RAIN HAVE FALLEN NEAR
MOAPA OVERNIGHT WITH A TENTH TO A HALF OF AN INCH FALLING IN THE FAR
NORTHWEST VEGAS VALLEY AND ALONG THE US-95 CORRIDOR BETWEEN VEGAS
AND INDIAN SPRINGS. EXPECT WHAT REMAINS OF THIS ACTIVITY TO SHIFT
EAST THIS AFTERNOON AS THE DISTURBANCE SHIFTS EASTWARD.  THE
FORECAST LOOKS TO BE IN GOOD SHAPE AND NO UPDATES ARE PLANNED THIS
MORNING.

.SHORT TERM...TODAY THROUGH FRIDAY NIGHT.

THERE ARE STILL A FEW SHOWERS AROUND MAINLY ACROSS SOUTHERN LINCOLN
AND NORTHERN CLARK COUNTIES AS WELL AS IN SOUTHERN MOHAVE COUNTY
EARLY THIS MORNING ON RADAR. OUR AREA REMAINS ON THE BACK SIDE OF A
DEPARTING MID/UPPER LEVEL TROUGH THIS MORNING. ONE LAST JET STREAK
WILL PASS ACROSS THE AREA LATE THIS MORNING INTO THIS AFTERNOON AND
WORK WITH WHATEVER MID-LEVEL ENERGY AND LOW AND MID-LEVEL MOISTURE
IS LEFT TO SQUEEZE OUT A FEW SHOWERS MAINLY ACROSS CLARK, LINCOLN,
MOHAVE AND FAR EASTERN SAN BERNARDINO COUNTIES. WHATEVER WE SEE WILL
NOT AMOUNT TO MUCH AND IN REALITY THE POP GRIDS THAT I CAME UP WITH
LOOK OVERDONE WITH THE AREAL COVERAGE OF POPS, BUT IT IS HARD TO
PINPOINT WHO WILL SEE ANY LIGHT PRECIPITATION IN THIS SORT OF
PATTERN. SNOW LEVELS WILL BE AROUND 5500 FEET. ANY CLOUDS THIS
MORNING SHOULD BREAK UP AND DECREASE IN COVERAGE TOWARD THE
AFTERNOON WITH LESS IN THE WAY OF LOWER AND MID-LEVEL CLOUD COVER
FOR TONIGHT. BOTH STATISTICAL MOS AND CONTINUITY LOOKED DECENT FOR
TEMPS TODAY AND TONIGHT. IF MCCARRAN DROPS BELOW 40 TONIGHT IT WOULD
ONLY BE THE SECOND TIME THIS MONTH AND 11TH TIME THIS YEAR THIS MARK
HAS BEEN REACHED.

A WEAK SHORTWAVE RIDGE WILL TRANSITION EAST ACROSS THE AREA TONIGHT
AND OPEN THE DOOR FOR ANOTHER SYSTEM TO ADVANCE IN FROM THE PACIFIC
ON FRIDAY. CIRRUS CLOUDS WILL FILL IN FROM THE WEST AND SPREAD EAST
THROUGH THE DAY. OVERALL THIS IS A RATHER MOISTURE STARVED SYSTEM
AND WE DO NOT EXPECT MUCH IN THE WAY OF SHOWERS EXCEPT ACROSS THE
HIGHER ELEVATIONS OF THE SOUTHERN GREAT BASIN FRIDAY AFTERNOON INTO
FRIDAY NIGHT. SNOW LEVELS SHOULD BE AROUND 6000 FEET. HIGH TEMPS ON
FRIDAY LOOK TO BE NEAR WHAT WE SEE TODAY AS THE THERMAL PROFILE IN
FORECAST SOUNDINGS SHOW NOT MUCH IN THE WAY OF CHANGE.

LONG TERM...SATURDAY THROUGH WEDNESDAY.

THE STORM TRACK WHICH HAS BEEN AFFECTING SOUTHERN NEVADA/SOUTHERN
CALIFORNIA THE PAST TWO WEEKS WILL SHIFT NORTHWARD OVER THE WEEKEND
AS A RIDGE OF HIGH PRESSURE BUILDS IN ACROSS CALIFORNIA/NEVADA. BUT
BEFORE IT DOES SO, THERE WILL BE A CHANCE OF SHOWERS ACROSS
NORTHERN/CENTRAL NEVADA SATURDAY WITH A SLIGHT CHANCE SPREADING AS
FAR SOUTH AS THE MOUNTAINS OF NORTHERN INYO, ESMERALDA, CENTRAL NYE
AND LINCOLN COUNTIES.

SUNDAY THROUGH WEDNESDAY THE REGION WILL LIE UNDER A DRY NORTHWEST
FLOW. NORTHWEST FLOW WILL REMAIN QUITE `DIRTY` WITH CLOUDINESS ON
SUNDAY, MORE SUNSHINE EXPECTED MONDAY/TUESDAY. NEXT WAVE OF CLOUDS
ARRIVES WEDNESDAY PRECEDING THE NEXT TROUGH. SURFACE HIGH
DEVELOPING OVER THE NORTHERN GREAT BASIN WILL LEAD TO AN INCREASE IN
NORTH BREEZES DOWN THE COLORADO RIVER VALLEY SOUTH OF HOOVER DAM
SUNDAY-TUESDAY. WATERS ON AREA LAKES WILL BECOME CHOPPY, OTHERWISE
NO IMPACTFUL WEATHER IS EXPECTED.

FOR THOSE TRAVELING AROUND CHRISTMAS, TROUGH DIGGING SOUTHWARD
THROUGH THE PAC NW CHRISTMAS EVE AND INTO THE GREAT BASIN CHRISTMAS
DAY MAY CAUSE SOME TRAVEL IMPACTS. STAY TUNED!
&&

.AVIATION...FOR MCCARRAN...UNLESS ANY SHOWERS PASS ACROSS OR NEAR
THE AIRPORT THIS MORNING CIGS SHOULD STAY BETWEEN 4K AND 6K FEET AND
GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET. CLOUD COVER SHOULD
TRANSITION TO MORE IN THE SCT RANGE BY THIS AFTERNOON. A FEW CLOUDS
AOB 10K FEET MAY LINGER INTO TONIGHT, HOWEVER ANOTHER ROUND OF
CLOUDS AOA 25K FEET WILL START TO SPREAD IN FROM THE WEST. WINDS
LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS AT 5 KTS OR LESS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...A FEW SHOWERS ARE POSSIBLE ACROSS CLARK, LINCOLN,
MOHAVE AND EASTERN SAN BERNARDINO COUNTIES THROUGH 18Z TODAY AND
THEN ACROSS MOHAVE COUNTY THROUGH 00Z FRIDAY. UNLESS ANY SHOWERS
PASS ACROSS OR NEAR A TERMINAL THIS MORNING CIGS SHOULD STAY BETWEEN
6K AND 8K FEET AND GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET.
CLOUD COVER SHOULD TRANSITION TO MORE IN THE SCT RANGE BY THIS
AFTERNOON. A FEW CLOUDS AOB 10K FEET MAY LINGER INTO TONIGHT,
HOWEVER ANOTHER ROUND OF CLOUDS AOA 25K FEET WILL START TO SPREAD IN
FROM THE WEST. WINDS LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS
AT 5 KTS OR LESS.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

UPDATE...OUTLER
SHORT TERM/AVIATION...STACHELSKI
LONG TERM...PIERCE

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER










000
FXUS65 KVEF 181049 CCA
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
249 AM PST THU DEC 18 2014

.SYNOPSIS...A FEW SHOWERS WILL LINGER ACROSS THE AREA THROUGH THIS
AFTERNOON AS A STORM SYSTEM DEPARTS TO THE EAST. ANOTHER SYSTEM WILL
PASS ACROSS THE AREA FRIDAY INTO SUNDAY BRINGING THE POTENTIAL FOR A
FEW LIGHT SHOWERS FRIDAY INTO SATURDAY FOLLOWED BY GUSTY NORTHWEST
TO NORTH WINDS ON SUNDAY. HIGH PRESSURE WILL KEEP THE AREA DRY
MONDAY THROUGH WEDNESDAY HOWEVER AN ADDITIONAL STORM SYSTEM MAY
AFFECT THE AREA ON CHRISTMAS DAY.
&&

.SHORT TERM...TODAY THROUGH FRIDAY NIGHT.

THERE ARE STILL A FEW SHOWERS AROUND MAINLY ACROSS SOUTHERN LINCOLN
AND NORTHERN CLARK COUNTIES AS WELL AS IN SOUTHERN MOHAVE COUNTY
EARLY THIS MORNING ON RADAR. OUR AREA REMAINS ON THE BACK SIDE OF A
DEPARTING MID/UPPER LEVEL TROUGH THIS MORNING. ONE LAST JET STREAK
WILL PASS ACROSS THE AREA LATE THIS MORNING INTO THIS AFTERNOON AND
WORK WITH WHATEVER MID-LEVEL ENERGY AND LOW AND MID-LEVEL MOISTURE
IS LEFT TO SQUEEZE OUT A FEW SHOWERS MAINLY ACROSS CLARK, LINCOLN,
MOHAVE AND FAR EASTERN SAN BERNARDINO COUNTIES. WHATEVER WE SEE WILL
NOT AMOUNT TO MUCH AND IN REALITY THE POP GRIDS THAT I CAME UP WITH
LOOK OVERDONE WITH THE AREAL COVERAGE OF POPS, BUT IT IS HARD TO
PINPOINT WHO WILL SEE ANY LIGHT PRECIPITATION IN THIS SORT OF
PATTERN. SNOW LEVELS WILL BE AROUND 5500 FEET. ANY CLOUDS THIS
MORNING SHOULD BREAK UP AND DECREASE IN COVERAGE TOWARD THE
AFTERNOON WITH LESS IN THE WAY OF LOWER AND MID-LEVEL CLOUD COVER
FOR TONIGHT. BOTH STATISTICAL MOS AND CONTINUITY LOOKED DECENT FOR
TEMPS TODAY AND TONIGHT. IF MCCARRAN DROPS BELOW 40 TONIGHT IT WOULD
ONLY BE THE SECOND TIME THIS MONTH AND 11TH TIME THIS YEAR THIS MARK
HAS BEEN REACHED.

A WEAK SHORTWAVE RIDGE WILL TRANSITION EAST ACROSS THE AREA TONIGHT
AND OPEN THE DOOR FOR ANOTHER SYSTEM TO ADVANCE IN FROM THE PACIFIC
ON FRIDAY. CIRRUS CLOUDS WILL FILL IN FROM THE WEST AND SPREAD EAST
THROUGH THE DAY. OVERALL THIS IS A RATHER MOISTURE STARVED SYSTEM
AND WE DO NOT EXPECT MUCH IN THE WAY OF SHOWERS EXCEPT ACROSS THE
HIGHER ELEVATIONS OF THE SOUTHERN GREAT BASIN FRIDAY AFTERNOON INTO
FRIDAY NIGHT. SNOW LEVELS SHOULD BE AROUND 6000 FEET. HIGH TEMPS ON
FRIDAY LOOK TO BE NEAR WHAT WE SEE TODAY AS THE THERMAL PROFILE IN
FORECAST SOUNDINGS SHOW NOT MUCH IN THE WAY OF CHANGE.

LONG TERM...SATURDAY THROUGH WEDNESDAY.

THE STORM TRACK WHICH HAS BEEN AFFECTING SOUTHERN NEVADA/SOUTHERN
CALIFORNIA THE PAST TWO WEEKS WILL SHIFT NORTHWARD OVER THE WEEKEND
AS A RIDGE OF HIGH PRESSURE BUILDS IN ACROSS CALIFORNIA/NEVADA. BUT
BEFORE IT DOES SO, THERE WILL BE A CHANCE OF SHOWERS ACROSS
NORTHERN/CENTRAL NEVADA SATURDAY WITH A SLIGHT CHANCE SPREADING AS
FAR SOUTH AS THE MOUNTAINS OF NORTHERN INYO, ESMERALDA, CENTRAL NYE
AND LINCOLN COUNTIES.

SUNDAY THROUGH WEDNESDAY THE REGION WILL LIE UNDER A DRY NORTHWEST
FLOW. NORTHWEST FLOW WILL REMAIN QUITE `DIRTY` WITH CLOUDINESS ON
SUNDAY, MORE SUNSHINE EXPECTED MONDAY/TUESDAY. NEXT WAVE OF CLOUDS
ARRIVES WEDNESDAY PRECEDING THE NEXT TROUGH. SURFACE HIGH
DEVELOPING OVER THE NORTHERN GREAT BASIN WILL LEAD TO AN INCREASE IN
NORTH BREEZES DOWN THE COLORADO RIVER VALLEY SOUTH OF HOOVER DAM
SUNDAY-TUESDAY. WATERS ON AREA LAKES WILL BECOME CHOPPY, OTHERWISE
NO IMPACTFUL WEATHER IS EXPECTED.

FOR THOSE TRAVELING AROUND CHRISTMAS, TROUGH DIGGING SOUTHWARD
THROUGH THE PAC NW CHRISTMAS EVE AND INTO THE GREAT BASIN CHRISTMAS
DAY MAY CAUSE SOME TRAVEL IMPACTS. STAY TUNED!
&&

.AVIATION...FOR MCCARRAN...UNLESS ANY SHOWERS PASS ACROSS OR NEAR
THE AIRPORT THIS MORNING CIGS SHOULD STAY BETWEEN 6K AND 8K FEET AND
GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET. CLOUD COVER SHOULD
TRANSITION TO MORE IN THE SCT RANGE BY THIS AFTERNOON. A FEW CLOUDS
AOB 10K FEET MAY LINGER INTO TONIGHT, HOWEVER ANOTHER ROUND OF
CLOUDS AOA 25K FEET WILL START TO SPREAD IN FROM THE WEST. WINDS
LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS AT 5 KTS OR LESS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...A FEW SHOWERS ARE POSSIBLE ACROSS CLARK, LINCOLN,
MOHAVE AND EASTERN SAN BERNARDINO COUNTIES THROUGH 18Z TODAY AND
THEN ACROSS MOHAVE COUNTY THROUGH 00Z FRIDAY. UNLESS ANY SHOWERS
PASS ACROSS OR NEAR A TERMINAL THIS MORNING CIGS SHOULD STAY BETWEEN
6K AND 8K FEET AND GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET.
CLOUD COVER SHOULD TRANSITION TO MORE IN THE SCT RANGE BY THIS
AFTERNOON. A FEW CLOUDS AOB 10K FEET MAY LINGER INTO TONIGHT,
HOWEVER ANOTHER ROUND OF CLOUDS AOA 25K FEET WILL START TO SPREAD IN
FROM THE WEST. WINDS LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS
AT 5 KTS OR LESS.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...PIERCE

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER








000
FXUS65 KVEF 181049 CCA
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
249 AM PST THU DEC 18 2014

.SYNOPSIS...A FEW SHOWERS WILL LINGER ACROSS THE AREA THROUGH THIS
AFTERNOON AS A STORM SYSTEM DEPARTS TO THE EAST. ANOTHER SYSTEM WILL
PASS ACROSS THE AREA FRIDAY INTO SUNDAY BRINGING THE POTENTIAL FOR A
FEW LIGHT SHOWERS FRIDAY INTO SATURDAY FOLLOWED BY GUSTY NORTHWEST
TO NORTH WINDS ON SUNDAY. HIGH PRESSURE WILL KEEP THE AREA DRY
MONDAY THROUGH WEDNESDAY HOWEVER AN ADDITIONAL STORM SYSTEM MAY
AFFECT THE AREA ON CHRISTMAS DAY.
&&

.SHORT TERM...TODAY THROUGH FRIDAY NIGHT.

THERE ARE STILL A FEW SHOWERS AROUND MAINLY ACROSS SOUTHERN LINCOLN
AND NORTHERN CLARK COUNTIES AS WELL AS IN SOUTHERN MOHAVE COUNTY
EARLY THIS MORNING ON RADAR. OUR AREA REMAINS ON THE BACK SIDE OF A
DEPARTING MID/UPPER LEVEL TROUGH THIS MORNING. ONE LAST JET STREAK
WILL PASS ACROSS THE AREA LATE THIS MORNING INTO THIS AFTERNOON AND
WORK WITH WHATEVER MID-LEVEL ENERGY AND LOW AND MID-LEVEL MOISTURE
IS LEFT TO SQUEEZE OUT A FEW SHOWERS MAINLY ACROSS CLARK, LINCOLN,
MOHAVE AND FAR EASTERN SAN BERNARDINO COUNTIES. WHATEVER WE SEE WILL
NOT AMOUNT TO MUCH AND IN REALITY THE POP GRIDS THAT I CAME UP WITH
LOOK OVERDONE WITH THE AREAL COVERAGE OF POPS, BUT IT IS HARD TO
PINPOINT WHO WILL SEE ANY LIGHT PRECIPITATION IN THIS SORT OF
PATTERN. SNOW LEVELS WILL BE AROUND 5500 FEET. ANY CLOUDS THIS
MORNING SHOULD BREAK UP AND DECREASE IN COVERAGE TOWARD THE
AFTERNOON WITH LESS IN THE WAY OF LOWER AND MID-LEVEL CLOUD COVER
FOR TONIGHT. BOTH STATISTICAL MOS AND CONTINUITY LOOKED DECENT FOR
TEMPS TODAY AND TONIGHT. IF MCCARRAN DROPS BELOW 40 TONIGHT IT WOULD
ONLY BE THE SECOND TIME THIS MONTH AND 11TH TIME THIS YEAR THIS MARK
HAS BEEN REACHED.

A WEAK SHORTWAVE RIDGE WILL TRANSITION EAST ACROSS THE AREA TONIGHT
AND OPEN THE DOOR FOR ANOTHER SYSTEM TO ADVANCE IN FROM THE PACIFIC
ON FRIDAY. CIRRUS CLOUDS WILL FILL IN FROM THE WEST AND SPREAD EAST
THROUGH THE DAY. OVERALL THIS IS A RATHER MOISTURE STARVED SYSTEM
AND WE DO NOT EXPECT MUCH IN THE WAY OF SHOWERS EXCEPT ACROSS THE
HIGHER ELEVATIONS OF THE SOUTHERN GREAT BASIN FRIDAY AFTERNOON INTO
FRIDAY NIGHT. SNOW LEVELS SHOULD BE AROUND 6000 FEET. HIGH TEMPS ON
FRIDAY LOOK TO BE NEAR WHAT WE SEE TODAY AS THE THERMAL PROFILE IN
FORECAST SOUNDINGS SHOW NOT MUCH IN THE WAY OF CHANGE.

LONG TERM...SATURDAY THROUGH WEDNESDAY.

THE STORM TRACK WHICH HAS BEEN AFFECTING SOUTHERN NEVADA/SOUTHERN
CALIFORNIA THE PAST TWO WEEKS WILL SHIFT NORTHWARD OVER THE WEEKEND
AS A RIDGE OF HIGH PRESSURE BUILDS IN ACROSS CALIFORNIA/NEVADA. BUT
BEFORE IT DOES SO, THERE WILL BE A CHANCE OF SHOWERS ACROSS
NORTHERN/CENTRAL NEVADA SATURDAY WITH A SLIGHT CHANCE SPREADING AS
FAR SOUTH AS THE MOUNTAINS OF NORTHERN INYO, ESMERALDA, CENTRAL NYE
AND LINCOLN COUNTIES.

SUNDAY THROUGH WEDNESDAY THE REGION WILL LIE UNDER A DRY NORTHWEST
FLOW. NORTHWEST FLOW WILL REMAIN QUITE `DIRTY` WITH CLOUDINESS ON
SUNDAY, MORE SUNSHINE EXPECTED MONDAY/TUESDAY. NEXT WAVE OF CLOUDS
ARRIVES WEDNESDAY PRECEDING THE NEXT TROUGH. SURFACE HIGH
DEVELOPING OVER THE NORTHERN GREAT BASIN WILL LEAD TO AN INCREASE IN
NORTH BREEZES DOWN THE COLORADO RIVER VALLEY SOUTH OF HOOVER DAM
SUNDAY-TUESDAY. WATERS ON AREA LAKES WILL BECOME CHOPPY, OTHERWISE
NO IMPACTFUL WEATHER IS EXPECTED.

FOR THOSE TRAVELING AROUND CHRISTMAS, TROUGH DIGGING SOUTHWARD
THROUGH THE PAC NW CHRISTMAS EVE AND INTO THE GREAT BASIN CHRISTMAS
DAY MAY CAUSE SOME TRAVEL IMPACTS. STAY TUNED!
&&

.AVIATION...FOR MCCARRAN...UNLESS ANY SHOWERS PASS ACROSS OR NEAR
THE AIRPORT THIS MORNING CIGS SHOULD STAY BETWEEN 6K AND 8K FEET AND
GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET. CLOUD COVER SHOULD
TRANSITION TO MORE IN THE SCT RANGE BY THIS AFTERNOON. A FEW CLOUDS
AOB 10K FEET MAY LINGER INTO TONIGHT, HOWEVER ANOTHER ROUND OF
CLOUDS AOA 25K FEET WILL START TO SPREAD IN FROM THE WEST. WINDS
LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS AT 5 KTS OR LESS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...A FEW SHOWERS ARE POSSIBLE ACROSS CLARK, LINCOLN,
MOHAVE AND EASTERN SAN BERNARDINO COUNTIES THROUGH 18Z TODAY AND
THEN ACROSS MOHAVE COUNTY THROUGH 00Z FRIDAY. UNLESS ANY SHOWERS
PASS ACROSS OR NEAR A TERMINAL THIS MORNING CIGS SHOULD STAY BETWEEN
6K AND 8K FEET AND GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET.
CLOUD COVER SHOULD TRANSITION TO MORE IN THE SCT RANGE BY THIS
AFTERNOON. A FEW CLOUDS AOB 10K FEET MAY LINGER INTO TONIGHT,
HOWEVER ANOTHER ROUND OF CLOUDS AOA 25K FEET WILL START TO SPREAD IN
FROM THE WEST. WINDS LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS
AT 5 KTS OR LESS.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...PIERCE

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER








000
FXUS65 KVEF 181049
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
248 AM PST THU DEC 18 2014

.SYNOPSIS...A FEW SHOWERS WILL LINGER ACROSS THE AREA THROUGH THIS
AFTERNOON AS A STORM SYSTEM DEPARTS TO THE EAST. ANOTHER SYSTEM WILL
PASS ACROSS THE AREA FRIDAY INTO SUNDAY BRINGING THE POTENTIAL FOR A
FEW LIGHT SHOWERS FRIDAY INTO SATURDAY FOLLOWED BY GUSTY NORTHWEST
TO NORTH WINDS ON SUNDAY. HIGH PRESSURE WILL KEEP THE AREA DRY
MONDAY THROUGH WEDNESDAY HOWEVER AN ADDITIONAL STORM SYSTEM MAY
AFFECT THE AREA ON CHRISTMAS DAY.
&&

.SHORT TERM...TODAY THROUGH FRIDAY NIGHT.

THERE ARE STILL A FEW SHOWERS AROUND MAINLY ACROSS SOUTHERN LINCOLN
AND NORTHERN CLARK COUNTIES AS WELL AS IN SOUTHERN MOHAVE COUNTY
EARLY THIS MORNING ON RADAR. OUR AREA REMAINS ON THE BACK SIDE OF A
DEPARTING MID/UPPER LEVEL TROUGH THIS MORNING. ONE LAST JET STREAK
WILL PASS ACROSS THE AREA LATE THIS MORNING INTO THIS AFTERNOON AND
WORK WITH WHATEVER MID-LEVEL ENERGY AND LOW AND MID-LEVEL MOISTURE
IS LEFT TO SQUEEZE OUT A FEW SHOWERS MAINLY ACROSS CLARK, LINCOLN,
MOHAVE AND FAR EASTERN SAN BERNARDINO COUNTIES. WHATEVER WE SEE WILL
NOT AMOUNT TO MUCH AND IN REALITY THE POP GRIDS THAT I CAME UP WITH
LOOK OVERDONE WITH THE AREAL COVERAGE OF POPS, BUT IT IS HARD TO
PINPOINT WHO WILL SEE ANY LIGHT PRECIPITATION IN THIS SORT OF
PATTERN. SNOW LEVELS WILL BE AROUND 5500 FEET. ANY CLOUDS THIS
MORNING SHOULD BREAK UP AND DECREASE IN COVERAGE TOWARD THE
AFTERNOON WITH LESS IN THE WAY OF LOWER AND MID-LEVEL CLOUD COVER
FOR TONIGHT. BOTH STATISTICAL MOS AND CONTINUITY LOOKED DECENT FOR
TEMPS TODAY AND TONIGHT. IF MCCARRAN DROPS BELOW 40 TONIGHT IT WOULD
ONLY BE THE SECOND TIME THIS MONTH AND 11TH TIME THIS YEAR THIS MARK
HAS BEEN REACHED.

A WEAK SHORTWAVE RIDGE WILL TRANSITION EAST ACROSS THE AREA TONIGHT
AND OPEN THE DOOR FOR ANOTHER SYSTEM TO ADVANCE IN FROM THE PACIFIC
ON FRIDAY. CIRRUS CLOUDS WILL FILL IN FROM THE WEST AND SPREAD EAST
THROUGH THE DAY. OVERALL THIS IS A RATHER MOISTURE STARVED SYSTEM
AND WE DO NOT EXPECT MUCH IN THE WAY OF SHOWERS EXCEPT ACROSS THE
HIGHER ELEVATIONS OF THE SOUTHERN GREAT BASIN FRIDAY AFTERNOON INTO
FRIDAY NIGHT. SNOW LEVELS SHOULD BE AROUND 6000 FEET. HIGH TEMPS ON
FRIDAY LOOK TO BE NEAR WHAT WE SEE TODAY AS THE THERMAL PROFILE IN
FORECAST SOUNDINGS SHOW NOT MUCH IN THE WAY OF CHANGE.

LONG TERM...SATURDAY THROUGH WEDNESDAY
THE STORM TRACK WHICH HAS BEEN AFFECTING SOUTHERN NEVADA/SOUTHERN
CALIFORNIA THE PAST TWO WEEKS WILL SHIFT NORTHWARD OVER THE WEEKEND
AS A RIDGE OF HIGH PRESSURE BUILDS IN ACROSS CALIFORNIA/NEVADA. BUT
BEFORE IT DOES SO, THERE WILL BE A CHANCE OF SHOWERS ACROSS
NORTHERN/CENTRAL NEVADA SATURDAY WITH A SLIGHT CHANCE SPREADING AS
FAR SOUTH AS THE MOUNTAINS OF NORTHERN INYO, ESMERALDA, CENTRAL NYE
AND LINCOLN COUNTIES.

SUNDAY THROUGH WEDNESDAY THE REGION WILL LIE UNDER A DRY NORTHWEST
FLOW. NORTHWEST FLOW WILL REMAIN QUITE `DIRTY` WITH CLOUDINESS ON
SUNDAY, MORE SUNSHINE EXPECTED MONDAY/TUESDAY. NEXT WAVE OF CLOUDS
ARRIVES WEDNESDAY PRECEDING THE NEXT TROUGH. SURFACE HIGH
DEVELOPING OVER THE NORTHERN GREAT BASIN WILL LEAD TO AN INCREASE IN
NORTH BREEZES DOWN THE COLORADO RIVER VALLEY SOUTH OF HOOVER DAM
SUNDAY-TUESDAY. WATERS ON AREA LAKES WILL BECOME CHOPPY, OTHERWISE
NO IMPACTFUL WEATHER IS EXPECTED.

FOR THOSE TRAVELING AROUND CHRISTMAS, TROUGH DIGGING SOUTHWARD
THROUGH THE PAC NW CHRISTMAS EVE AND INTO THE GREAT BASIN CHRISTMAS
DAY MAY CAUSE SOME TRAVEL IMPACTS. STAY TUNED!
&&

.AVIATION...FOR MCCARRAN...UNLESS ANY SHOWERS PASS ACROSS OR NEAR
THE AIRPORT THIS MORNING CIGS SHOULD STAY BETWEEN 6K AND 8K FEET AND
GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET. CLOUD COVER SHOULD
TRANSITION TO MORE IN THE SCT RANGE BY THIS AFTERNOON. A FEW CLOUDS
AOB 10K FEET MAY LINGER INTO TONIGHT, HOWEVER ANOTHER ROUND OF
CLOUDS AOA 25K FEET WILL START TO SPREAD IN FROM THE WEST. WINDS
LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS AT 5 KTS OR LESS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...A FEW SHOWERS ARE POSSIBLE ACROSS CLARK, LINCOLN,
MOHAVE AND EASTERN SAN BERNARDINO COUNTIES THROUGH 18Z TODAY AND
THEN ACROSS MOHAVE COUNTY THROUGH 00Z FRIDAY. UNLESS ANY SHOWERS
PASS ACROSS OR NEAR A TERMINAL THIS MORNING CIGS SHOULD STAY BETWEEN
6K AND 8K FEET AND GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET.
CLOUD COVER SHOULD TRANSITION TO MORE IN THE SCT RANGE BY THIS
AFTERNOON. A FEW CLOUDS AOB 10K FEET MAY LINGER INTO TONIGHT,
HOWEVER ANOTHER ROUND OF CLOUDS AOA 25K FEET WILL START TO SPREAD IN
FROM THE WEST. WINDS LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS
AT 5 KTS OR LESS.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...PIERCE

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER









000
FXUS65 KVEF 181049
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
248 AM PST THU DEC 18 2014

.SYNOPSIS...A FEW SHOWERS WILL LINGER ACROSS THE AREA THROUGH THIS
AFTERNOON AS A STORM SYSTEM DEPARTS TO THE EAST. ANOTHER SYSTEM WILL
PASS ACROSS THE AREA FRIDAY INTO SUNDAY BRINGING THE POTENTIAL FOR A
FEW LIGHT SHOWERS FRIDAY INTO SATURDAY FOLLOWED BY GUSTY NORTHWEST
TO NORTH WINDS ON SUNDAY. HIGH PRESSURE WILL KEEP THE AREA DRY
MONDAY THROUGH WEDNESDAY HOWEVER AN ADDITIONAL STORM SYSTEM MAY
AFFECT THE AREA ON CHRISTMAS DAY.
&&

.SHORT TERM...TODAY THROUGH FRIDAY NIGHT.

THERE ARE STILL A FEW SHOWERS AROUND MAINLY ACROSS SOUTHERN LINCOLN
AND NORTHERN CLARK COUNTIES AS WELL AS IN SOUTHERN MOHAVE COUNTY
EARLY THIS MORNING ON RADAR. OUR AREA REMAINS ON THE BACK SIDE OF A
DEPARTING MID/UPPER LEVEL TROUGH THIS MORNING. ONE LAST JET STREAK
WILL PASS ACROSS THE AREA LATE THIS MORNING INTO THIS AFTERNOON AND
WORK WITH WHATEVER MID-LEVEL ENERGY AND LOW AND MID-LEVEL MOISTURE
IS LEFT TO SQUEEZE OUT A FEW SHOWERS MAINLY ACROSS CLARK, LINCOLN,
MOHAVE AND FAR EASTERN SAN BERNARDINO COUNTIES. WHATEVER WE SEE WILL
NOT AMOUNT TO MUCH AND IN REALITY THE POP GRIDS THAT I CAME UP WITH
LOOK OVERDONE WITH THE AREAL COVERAGE OF POPS, BUT IT IS HARD TO
PINPOINT WHO WILL SEE ANY LIGHT PRECIPITATION IN THIS SORT OF
PATTERN. SNOW LEVELS WILL BE AROUND 5500 FEET. ANY CLOUDS THIS
MORNING SHOULD BREAK UP AND DECREASE IN COVERAGE TOWARD THE
AFTERNOON WITH LESS IN THE WAY OF LOWER AND MID-LEVEL CLOUD COVER
FOR TONIGHT. BOTH STATISTICAL MOS AND CONTINUITY LOOKED DECENT FOR
TEMPS TODAY AND TONIGHT. IF MCCARRAN DROPS BELOW 40 TONIGHT IT WOULD
ONLY BE THE SECOND TIME THIS MONTH AND 11TH TIME THIS YEAR THIS MARK
HAS BEEN REACHED.

A WEAK SHORTWAVE RIDGE WILL TRANSITION EAST ACROSS THE AREA TONIGHT
AND OPEN THE DOOR FOR ANOTHER SYSTEM TO ADVANCE IN FROM THE PACIFIC
ON FRIDAY. CIRRUS CLOUDS WILL FILL IN FROM THE WEST AND SPREAD EAST
THROUGH THE DAY. OVERALL THIS IS A RATHER MOISTURE STARVED SYSTEM
AND WE DO NOT EXPECT MUCH IN THE WAY OF SHOWERS EXCEPT ACROSS THE
HIGHER ELEVATIONS OF THE SOUTHERN GREAT BASIN FRIDAY AFTERNOON INTO
FRIDAY NIGHT. SNOW LEVELS SHOULD BE AROUND 6000 FEET. HIGH TEMPS ON
FRIDAY LOOK TO BE NEAR WHAT WE SEE TODAY AS THE THERMAL PROFILE IN
FORECAST SOUNDINGS SHOW NOT MUCH IN THE WAY OF CHANGE.

LONG TERM...SATURDAY THROUGH WEDNESDAY
THE STORM TRACK WHICH HAS BEEN AFFECTING SOUTHERN NEVADA/SOUTHERN
CALIFORNIA THE PAST TWO WEEKS WILL SHIFT NORTHWARD OVER THE WEEKEND
AS A RIDGE OF HIGH PRESSURE BUILDS IN ACROSS CALIFORNIA/NEVADA. BUT
BEFORE IT DOES SO, THERE WILL BE A CHANCE OF SHOWERS ACROSS
NORTHERN/CENTRAL NEVADA SATURDAY WITH A SLIGHT CHANCE SPREADING AS
FAR SOUTH AS THE MOUNTAINS OF NORTHERN INYO, ESMERALDA, CENTRAL NYE
AND LINCOLN COUNTIES.

SUNDAY THROUGH WEDNESDAY THE REGION WILL LIE UNDER A DRY NORTHWEST
FLOW. NORTHWEST FLOW WILL REMAIN QUITE `DIRTY` WITH CLOUDINESS ON
SUNDAY, MORE SUNSHINE EXPECTED MONDAY/TUESDAY. NEXT WAVE OF CLOUDS
ARRIVES WEDNESDAY PRECEDING THE NEXT TROUGH. SURFACE HIGH
DEVELOPING OVER THE NORTHERN GREAT BASIN WILL LEAD TO AN INCREASE IN
NORTH BREEZES DOWN THE COLORADO RIVER VALLEY SOUTH OF HOOVER DAM
SUNDAY-TUESDAY. WATERS ON AREA LAKES WILL BECOME CHOPPY, OTHERWISE
NO IMPACTFUL WEATHER IS EXPECTED.

FOR THOSE TRAVELING AROUND CHRISTMAS, TROUGH DIGGING SOUTHWARD
THROUGH THE PAC NW CHRISTMAS EVE AND INTO THE GREAT BASIN CHRISTMAS
DAY MAY CAUSE SOME TRAVEL IMPACTS. STAY TUNED!
&&

.AVIATION...FOR MCCARRAN...UNLESS ANY SHOWERS PASS ACROSS OR NEAR
THE AIRPORT THIS MORNING CIGS SHOULD STAY BETWEEN 6K AND 8K FEET AND
GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET. CLOUD COVER SHOULD
TRANSITION TO MORE IN THE SCT RANGE BY THIS AFTERNOON. A FEW CLOUDS
AOB 10K FEET MAY LINGER INTO TONIGHT, HOWEVER ANOTHER ROUND OF
CLOUDS AOA 25K FEET WILL START TO SPREAD IN FROM THE WEST. WINDS
LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS AT 5 KTS OR LESS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...A FEW SHOWERS ARE POSSIBLE ACROSS CLARK, LINCOLN,
MOHAVE AND EASTERN SAN BERNARDINO COUNTIES THROUGH 18Z TODAY AND
THEN ACROSS MOHAVE COUNTY THROUGH 00Z FRIDAY. UNLESS ANY SHOWERS
PASS ACROSS OR NEAR A TERMINAL THIS MORNING CIGS SHOULD STAY BETWEEN
6K AND 8K FEET AND GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET.
CLOUD COVER SHOULD TRANSITION TO MORE IN THE SCT RANGE BY THIS
AFTERNOON. A FEW CLOUDS AOB 10K FEET MAY LINGER INTO TONIGHT,
HOWEVER ANOTHER ROUND OF CLOUDS AOA 25K FEET WILL START TO SPREAD IN
FROM THE WEST. WINDS LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS
AT 5 KTS OR LESS.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...PIERCE

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER








000
FXUS65 KVEF 181049
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
248 AM PST THU DEC 18 2014

.SYNOPSIS...A FEW SHOWERS WILL LINGER ACROSS THE AREA THROUGH THIS
AFTERNOON AS A STORM SYSTEM DEPARTS TO THE EAST. ANOTHER SYSTEM WILL
PASS ACROSS THE AREA FRIDAY INTO SUNDAY BRINGING THE POTENTIAL FOR A
FEW LIGHT SHOWERS FRIDAY INTO SATURDAY FOLLOWED BY GUSTY NORTHWEST
TO NORTH WINDS ON SUNDAY. HIGH PRESSURE WILL KEEP THE AREA DRY
MONDAY THROUGH WEDNESDAY HOWEVER AN ADDITIONAL STORM SYSTEM MAY
AFFECT THE AREA ON CHRISTMAS DAY.
&&

.SHORT TERM...TODAY THROUGH FRIDAY NIGHT.

THERE ARE STILL A FEW SHOWERS AROUND MAINLY ACROSS SOUTHERN LINCOLN
AND NORTHERN CLARK COUNTIES AS WELL AS IN SOUTHERN MOHAVE COUNTY
EARLY THIS MORNING ON RADAR. OUR AREA REMAINS ON THE BACK SIDE OF A
DEPARTING MID/UPPER LEVEL TROUGH THIS MORNING. ONE LAST JET STREAK
WILL PASS ACROSS THE AREA LATE THIS MORNING INTO THIS AFTERNOON AND
WORK WITH WHATEVER MID-LEVEL ENERGY AND LOW AND MID-LEVEL MOISTURE
IS LEFT TO SQUEEZE OUT A FEW SHOWERS MAINLY ACROSS CLARK, LINCOLN,
MOHAVE AND FAR EASTERN SAN BERNARDINO COUNTIES. WHATEVER WE SEE WILL
NOT AMOUNT TO MUCH AND IN REALITY THE POP GRIDS THAT I CAME UP WITH
LOOK OVERDONE WITH THE AREAL COVERAGE OF POPS, BUT IT IS HARD TO
PINPOINT WHO WILL SEE ANY LIGHT PRECIPITATION IN THIS SORT OF
PATTERN. SNOW LEVELS WILL BE AROUND 5500 FEET. ANY CLOUDS THIS
MORNING SHOULD BREAK UP AND DECREASE IN COVERAGE TOWARD THE
AFTERNOON WITH LESS IN THE WAY OF LOWER AND MID-LEVEL CLOUD COVER
FOR TONIGHT. BOTH STATISTICAL MOS AND CONTINUITY LOOKED DECENT FOR
TEMPS TODAY AND TONIGHT. IF MCCARRAN DROPS BELOW 40 TONIGHT IT WOULD
ONLY BE THE SECOND TIME THIS MONTH AND 11TH TIME THIS YEAR THIS MARK
HAS BEEN REACHED.

A WEAK SHORTWAVE RIDGE WILL TRANSITION EAST ACROSS THE AREA TONIGHT
AND OPEN THE DOOR FOR ANOTHER SYSTEM TO ADVANCE IN FROM THE PACIFIC
ON FRIDAY. CIRRUS CLOUDS WILL FILL IN FROM THE WEST AND SPREAD EAST
THROUGH THE DAY. OVERALL THIS IS A RATHER MOISTURE STARVED SYSTEM
AND WE DO NOT EXPECT MUCH IN THE WAY OF SHOWERS EXCEPT ACROSS THE
HIGHER ELEVATIONS OF THE SOUTHERN GREAT BASIN FRIDAY AFTERNOON INTO
FRIDAY NIGHT. SNOW LEVELS SHOULD BE AROUND 6000 FEET. HIGH TEMPS ON
FRIDAY LOOK TO BE NEAR WHAT WE SEE TODAY AS THE THERMAL PROFILE IN
FORECAST SOUNDINGS SHOW NOT MUCH IN THE WAY OF CHANGE.

LONG TERM...SATURDAY THROUGH WEDNESDAY
THE STORM TRACK WHICH HAS BEEN AFFECTING SOUTHERN NEVADA/SOUTHERN
CALIFORNIA THE PAST TWO WEEKS WILL SHIFT NORTHWARD OVER THE WEEKEND
AS A RIDGE OF HIGH PRESSURE BUILDS IN ACROSS CALIFORNIA/NEVADA. BUT
BEFORE IT DOES SO, THERE WILL BE A CHANCE OF SHOWERS ACROSS
NORTHERN/CENTRAL NEVADA SATURDAY WITH A SLIGHT CHANCE SPREADING AS
FAR SOUTH AS THE MOUNTAINS OF NORTHERN INYO, ESMERALDA, CENTRAL NYE
AND LINCOLN COUNTIES.

SUNDAY THROUGH WEDNESDAY THE REGION WILL LIE UNDER A DRY NORTHWEST
FLOW. NORTHWEST FLOW WILL REMAIN QUITE `DIRTY` WITH CLOUDINESS ON
SUNDAY, MORE SUNSHINE EXPECTED MONDAY/TUESDAY. NEXT WAVE OF CLOUDS
ARRIVES WEDNESDAY PRECEDING THE NEXT TROUGH. SURFACE HIGH
DEVELOPING OVER THE NORTHERN GREAT BASIN WILL LEAD TO AN INCREASE IN
NORTH BREEZES DOWN THE COLORADO RIVER VALLEY SOUTH OF HOOVER DAM
SUNDAY-TUESDAY. WATERS ON AREA LAKES WILL BECOME CHOPPY, OTHERWISE
NO IMPACTFUL WEATHER IS EXPECTED.

FOR THOSE TRAVELING AROUND CHRISTMAS, TROUGH DIGGING SOUTHWARD
THROUGH THE PAC NW CHRISTMAS EVE AND INTO THE GREAT BASIN CHRISTMAS
DAY MAY CAUSE SOME TRAVEL IMPACTS. STAY TUNED!
&&

.AVIATION...FOR MCCARRAN...UNLESS ANY SHOWERS PASS ACROSS OR NEAR
THE AIRPORT THIS MORNING CIGS SHOULD STAY BETWEEN 6K AND 8K FEET AND
GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET. CLOUD COVER SHOULD
TRANSITION TO MORE IN THE SCT RANGE BY THIS AFTERNOON. A FEW CLOUDS
AOB 10K FEET MAY LINGER INTO TONIGHT, HOWEVER ANOTHER ROUND OF
CLOUDS AOA 25K FEET WILL START TO SPREAD IN FROM THE WEST. WINDS
LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS AT 5 KTS OR LESS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...A FEW SHOWERS ARE POSSIBLE ACROSS CLARK, LINCOLN,
MOHAVE AND EASTERN SAN BERNARDINO COUNTIES THROUGH 18Z TODAY AND
THEN ACROSS MOHAVE COUNTY THROUGH 00Z FRIDAY. UNLESS ANY SHOWERS
PASS ACROSS OR NEAR A TERMINAL THIS MORNING CIGS SHOULD STAY BETWEEN
6K AND 8K FEET AND GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET.
CLOUD COVER SHOULD TRANSITION TO MORE IN THE SCT RANGE BY THIS
AFTERNOON. A FEW CLOUDS AOB 10K FEET MAY LINGER INTO TONIGHT,
HOWEVER ANOTHER ROUND OF CLOUDS AOA 25K FEET WILL START TO SPREAD IN
FROM THE WEST. WINDS LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS
AT 5 KTS OR LESS.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...PIERCE

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER









000
FXUS65 KVEF 181049
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
248 AM PST THU DEC 18 2014

.SYNOPSIS...A FEW SHOWERS WILL LINGER ACROSS THE AREA THROUGH THIS
AFTERNOON AS A STORM SYSTEM DEPARTS TO THE EAST. ANOTHER SYSTEM WILL
PASS ACROSS THE AREA FRIDAY INTO SUNDAY BRINGING THE POTENTIAL FOR A
FEW LIGHT SHOWERS FRIDAY INTO SATURDAY FOLLOWED BY GUSTY NORTHWEST
TO NORTH WINDS ON SUNDAY. HIGH PRESSURE WILL KEEP THE AREA DRY
MONDAY THROUGH WEDNESDAY HOWEVER AN ADDITIONAL STORM SYSTEM MAY
AFFECT THE AREA ON CHRISTMAS DAY.
&&

.SHORT TERM...TODAY THROUGH FRIDAY NIGHT.

THERE ARE STILL A FEW SHOWERS AROUND MAINLY ACROSS SOUTHERN LINCOLN
AND NORTHERN CLARK COUNTIES AS WELL AS IN SOUTHERN MOHAVE COUNTY
EARLY THIS MORNING ON RADAR. OUR AREA REMAINS ON THE BACK SIDE OF A
DEPARTING MID/UPPER LEVEL TROUGH THIS MORNING. ONE LAST JET STREAK
WILL PASS ACROSS THE AREA LATE THIS MORNING INTO THIS AFTERNOON AND
WORK WITH WHATEVER MID-LEVEL ENERGY AND LOW AND MID-LEVEL MOISTURE
IS LEFT TO SQUEEZE OUT A FEW SHOWERS MAINLY ACROSS CLARK, LINCOLN,
MOHAVE AND FAR EASTERN SAN BERNARDINO COUNTIES. WHATEVER WE SEE WILL
NOT AMOUNT TO MUCH AND IN REALITY THE POP GRIDS THAT I CAME UP WITH
LOOK OVERDONE WITH THE AREAL COVERAGE OF POPS, BUT IT IS HARD TO
PINPOINT WHO WILL SEE ANY LIGHT PRECIPITATION IN THIS SORT OF
PATTERN. SNOW LEVELS WILL BE AROUND 5500 FEET. ANY CLOUDS THIS
MORNING SHOULD BREAK UP AND DECREASE IN COVERAGE TOWARD THE
AFTERNOON WITH LESS IN THE WAY OF LOWER AND MID-LEVEL CLOUD COVER
FOR TONIGHT. BOTH STATISTICAL MOS AND CONTINUITY LOOKED DECENT FOR
TEMPS TODAY AND TONIGHT. IF MCCARRAN DROPS BELOW 40 TONIGHT IT WOULD
ONLY BE THE SECOND TIME THIS MONTH AND 11TH TIME THIS YEAR THIS MARK
HAS BEEN REACHED.

A WEAK SHORTWAVE RIDGE WILL TRANSITION EAST ACROSS THE AREA TONIGHT
AND OPEN THE DOOR FOR ANOTHER SYSTEM TO ADVANCE IN FROM THE PACIFIC
ON FRIDAY. CIRRUS CLOUDS WILL FILL IN FROM THE WEST AND SPREAD EAST
THROUGH THE DAY. OVERALL THIS IS A RATHER MOISTURE STARVED SYSTEM
AND WE DO NOT EXPECT MUCH IN THE WAY OF SHOWERS EXCEPT ACROSS THE
HIGHER ELEVATIONS OF THE SOUTHERN GREAT BASIN FRIDAY AFTERNOON INTO
FRIDAY NIGHT. SNOW LEVELS SHOULD BE AROUND 6000 FEET. HIGH TEMPS ON
FRIDAY LOOK TO BE NEAR WHAT WE SEE TODAY AS THE THERMAL PROFILE IN
FORECAST SOUNDINGS SHOW NOT MUCH IN THE WAY OF CHANGE.

LONG TERM...SATURDAY THROUGH WEDNESDAY
THE STORM TRACK WHICH HAS BEEN AFFECTING SOUTHERN NEVADA/SOUTHERN
CALIFORNIA THE PAST TWO WEEKS WILL SHIFT NORTHWARD OVER THE WEEKEND
AS A RIDGE OF HIGH PRESSURE BUILDS IN ACROSS CALIFORNIA/NEVADA. BUT
BEFORE IT DOES SO, THERE WILL BE A CHANCE OF SHOWERS ACROSS
NORTHERN/CENTRAL NEVADA SATURDAY WITH A SLIGHT CHANCE SPREADING AS
FAR SOUTH AS THE MOUNTAINS OF NORTHERN INYO, ESMERALDA, CENTRAL NYE
AND LINCOLN COUNTIES.

SUNDAY THROUGH WEDNESDAY THE REGION WILL LIE UNDER A DRY NORTHWEST
FLOW. NORTHWEST FLOW WILL REMAIN QUITE `DIRTY` WITH CLOUDINESS ON
SUNDAY, MORE SUNSHINE EXPECTED MONDAY/TUESDAY. NEXT WAVE OF CLOUDS
ARRIVES WEDNESDAY PRECEDING THE NEXT TROUGH. SURFACE HIGH
DEVELOPING OVER THE NORTHERN GREAT BASIN WILL LEAD TO AN INCREASE IN
NORTH BREEZES DOWN THE COLORADO RIVER VALLEY SOUTH OF HOOVER DAM
SUNDAY-TUESDAY. WATERS ON AREA LAKES WILL BECOME CHOPPY, OTHERWISE
NO IMPACTFUL WEATHER IS EXPECTED.

FOR THOSE TRAVELING AROUND CHRISTMAS, TROUGH DIGGING SOUTHWARD
THROUGH THE PAC NW CHRISTMAS EVE AND INTO THE GREAT BASIN CHRISTMAS
DAY MAY CAUSE SOME TRAVEL IMPACTS. STAY TUNED!
&&

.AVIATION...FOR MCCARRAN...UNLESS ANY SHOWERS PASS ACROSS OR NEAR
THE AIRPORT THIS MORNING CIGS SHOULD STAY BETWEEN 6K AND 8K FEET AND
GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET. CLOUD COVER SHOULD
TRANSITION TO MORE IN THE SCT RANGE BY THIS AFTERNOON. A FEW CLOUDS
AOB 10K FEET MAY LINGER INTO TONIGHT, HOWEVER ANOTHER ROUND OF
CLOUDS AOA 25K FEET WILL START TO SPREAD IN FROM THE WEST. WINDS
LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS AT 5 KTS OR LESS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...A FEW SHOWERS ARE POSSIBLE ACROSS CLARK, LINCOLN,
MOHAVE AND EASTERN SAN BERNARDINO COUNTIES THROUGH 18Z TODAY AND
THEN ACROSS MOHAVE COUNTY THROUGH 00Z FRIDAY. UNLESS ANY SHOWERS
PASS ACROSS OR NEAR A TERMINAL THIS MORNING CIGS SHOULD STAY BETWEEN
6K AND 8K FEET AND GRADUALLY RISE THROUGH THE DAY ABOVE 10K FEET.
CLOUD COVER SHOULD TRANSITION TO MORE IN THE SCT RANGE BY THIS
AFTERNOON. A FEW CLOUDS AOB 10K FEET MAY LINGER INTO TONIGHT,
HOWEVER ANOTHER ROUND OF CLOUDS AOA 25K FEET WILL START TO SPREAD IN
FROM THE WEST. WINDS LOOK TO TREND TOWARD TYPICAL DIURNAL DIRECTIONS
AT 5 KTS OR LESS.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SHORT TERM/AVIATION...STACHELSKI
LONG TERM...PIERCE

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER








000
FXUS65 KVEF 180453
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
853 PM PST WED DEC 17 2014

.SYNOPSIS...SCATTERED LIGHT RAIN SHOWERS AND MOUNTAIN SNOW SHOWERS
WILL DIMINISH OVERNIGHT AS A WEATHER SYSTEM SLOWLY MOVES ACROSS THE
DESERT SOUTHWEST. IMPROVING CONDITIONS ARE EXPECTED THURSDAY AND
FRIDAY. A FEW SHOWERS WILL BE POSSIBLE ACROSS THE GREAT BASIN OVER
THE WEEKEND FOLLOWED BY DRY AND WARMER WEATHER NEXT WEEK.
&&

.UPDATE...NOT A VERY WET STORM FOR OUR AREA, HOWEVER, THIS IS ONE OF
THE RARE MONTHS IN THE LAST FEW YEARS WITH ABOVE NORMAL
PRECIPITATION AND SO WE`LL TAKE WHATEVER WE CAN GET. MOST AREAS SAW
UNDER A QUARTER OF AN INCH OF PRECIPITATION WITH THIS EVENT AND THE
REALITY WAS ONLY A FEW HUNDREDTHS OF AN INCH AT MOST SPOTS. THE
EVENING SOUNDING SHOWED A SMALL MOIST LAYER BETWEEN 825 AND 725 MB
WHICH STILL SUPPORTS THE POTENTIAL FOR SOME PRECIPITATION TO REACH
THE GROUND THROUGH THE REST OF TONIGHT. OVERALL THE POP GRIDS LOOKED
OK, HOWEVER, THERE IS A SECOND PIECE OF ENERGY EXPECTED TO PUSH INTO
SOUTHEAST CALIFORNIA AND SOUTHERN NEVADA LATER TONIGHT THAT MAY SET
OFF SOME ADDITIONAL SHOWER ACTIVITY IN THE WESTERN CWFA. BOTH THE
WRF AND HRRR MODELS SUGGEST SOME SHOWER ACTIVITY WITH THIS FEATURE
ACROSS INYO, ESMERALDA AS WELL AS CENTRAL AND SOUTHERN NYE COUNTIES
AND POPS WERE ADJUSTED IN THESE AREAS FOR THE REST OF TONIGHT.
OTHERWISE THE FORECAST LOOKED IN GOOD SHAPE AND I WILL LEAVE IT BE.
&&

.AVIATION...FOR MCCARRAN...CEILINGS WILL HOVER AROUND 6 KFT BEFORE
PARTIALLY CLEARING AND LIFTING TO AROUND 10 KFT THURSDAY MORNING.
GENERALLY LIGHT WINDS WILL CONTINUE TONIGHT.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...CIGS OF 3K-6K FT AND MOUNTAIN OBSCURATIONS WILL
CONTINUE ACROSS MUCH OF THE REGION THROUGH THURSDAY MORNING
FOLLOWED BY PARTIAL CLEARING AS A WEAK WEATHER SYSTEM GRADUALLY
MOVES TO THE EAST.
&&

PREVIOUS DISCUSSION...
ISSUED 250 PM PST WED DEC 17 2014

.SHORT TERM...EXTENSIVE LOW TO MID LEVEL CLOUDS WERE APPARENT FROM
SATELLITE LOOPS AND SURFACE OBSERVATIONS ACROSS THE FORECAST AREA
AND THESE WILL BE SLOW TO CLEAR OUT TONIGHT THROUGH THURSDAY. RECENT
RADAR LOOPS SHOWED A SLIGHT UPWARD TREND IN SCATTERED SHOWERS ACROSS
SOUTHERN CLARK AND CENTRAL MOHAVE COUNTIES EARLY THIS AFTERNOON AND
THE HRRR MODEL INDICATES THIS WILL BE THE PRIMARY AREA FOR
PRECIPITATION THROUGH EARLY THIS EVENING. ANY ADDITIONAL SNOW
AMOUNTS IN THE MOUNTAINS OF SOUTHERN NEVADA AND NORTHWEST ARIZONA
ARE EXPECTED TO BE VERY LIGHT AND THE WINTER WEATHER ADVISORY HAS
BEEN CANCELLED. THE MEAN TROUGH OVER THE REGION WILL DIG A
LITTLE TONIGHT AS A SHORTWAVE WEST OF POINT CONCEPTION DIVES TOWARD
NORTHERN BAJA. AN ADDITIONAL BAND OF MOISTURE ASSOCIATED WITH THIS
SHORTWAVE WILL MOVE INTO THE SOUTHERN SIERRA OVERNIGHT AND WILL
PRODUCE A CHANCE OF VERY LIGHT SNOW OVER THE EASTERN SLOPES...SO
POPS WERE INCREASED ACCORDINGLY.

THE TROUGH AXIS WILL SHIFT EASTWARD THURSDAY WITH GRADUAL CLEARING
THURSDAY AFTERNOON THROUGH THURSDAY NIGHT. LITTLE CHANGE IN
TEMPERATURES CAN BE EXPECTED.
&&

.LONG TERM...FRIDAY THROUGH TUESDAY.

MEDIUM RANGE MODELS SIMILAR TO 24 HOURS AGO INDICATING MOST OF THE
ENERGY ASSOCIATED WITH NEXT SHORTWAVE TROUGH WILL AFFECT CENTRAL
NEVADA NORTHWARD FRIDAY NIGHT INTO SATURDAY. WITH THAT SAID, LEFT IN
SLIGHT CHANCE POPS FROM NORTHERN INYO COUNTY EASTWARD TO NORTHERN
LINCOLN COUNTY TO ACCOUNT FOR ANY POTENTIAL SOUTHWARD SHIFT.

SUNDAY THROUGH TUESDAY THE LONGWAVE PATTERN WILL BE DOMINATED BY A
STRONG RIDGE ALONG THE WEST COAST WITH A TROUGH EAST OF THE ROCKIES.
SOUTHERN GREAT BASIN/MOJAVE DESERT WILL LIE UNDER A DRY NORTHWEST
FLOW. SURFACE HIGH DEVELOPING OVER THE NORTHERN GREAT BASIN WILL
LEAD TO AN INCREASE IN NORTH BREEZES DOWN THE COLORADO RIVER VALLEY
SOUTH OF HOOVER DAM SUNDAY-TUESDAY.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER CONDITIONS TODAY THROUGH THURSDAY ACCORDING
TO STANDARD OPERATING PROCEDURES.
&&

$$

UPDATE/AVIATION...STACHELSKI
SHORT TERM...ADAIR
LONG TERM...PIERCE

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER







000
FXUS65 KVEF 180453
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
853 PM PST WED DEC 17 2014

.SYNOPSIS...SCATTERED LIGHT RAIN SHOWERS AND MOUNTAIN SNOW SHOWERS
WILL DIMINISH OVERNIGHT AS A WEATHER SYSTEM SLOWLY MOVES ACROSS THE
DESERT SOUTHWEST. IMPROVING CONDITIONS ARE EXPECTED THURSDAY AND
FRIDAY. A FEW SHOWERS WILL BE POSSIBLE ACROSS THE GREAT BASIN OVER
THE WEEKEND FOLLOWED BY DRY AND WARMER WEATHER NEXT WEEK.
&&

.UPDATE...NOT A VERY WET STORM FOR OUR AREA, HOWEVER, THIS IS ONE OF
THE RARE MONTHS IN THE LAST FEW YEARS WITH ABOVE NORMAL
PRECIPITATION AND SO WE`LL TAKE WHATEVER WE CAN GET. MOST AREAS SAW
UNDER A QUARTER OF AN INCH OF PRECIPITATION WITH THIS EVENT AND THE
REALITY WAS ONLY A FEW HUNDREDTHS OF AN INCH AT MOST SPOTS. THE
EVENING SOUNDING SHOWED A SMALL MOIST LAYER BETWEEN 825 AND 725 MB
WHICH STILL SUPPORTS THE POTENTIAL FOR SOME PRECIPITATION TO REACH
THE GROUND THROUGH THE REST OF TONIGHT. OVERALL THE POP GRIDS LOOKED
OK, HOWEVER, THERE IS A SECOND PIECE OF ENERGY EXPECTED TO PUSH INTO
SOUTHEAST CALIFORNIA AND SOUTHERN NEVADA LATER TONIGHT THAT MAY SET
OFF SOME ADDITIONAL SHOWER ACTIVITY IN THE WESTERN CWFA. BOTH THE
WRF AND HRRR MODELS SUGGEST SOME SHOWER ACTIVITY WITH THIS FEATURE
ACROSS INYO, ESMERALDA AS WELL AS CENTRAL AND SOUTHERN NYE COUNTIES
AND POPS WERE ADJUSTED IN THESE AREAS FOR THE REST OF TONIGHT.
OTHERWISE THE FORECAST LOOKED IN GOOD SHAPE AND I WILL LEAVE IT BE.
&&

.AVIATION...FOR MCCARRAN...CEILINGS WILL HOVER AROUND 6 KFT BEFORE
PARTIALLY CLEARING AND LIFTING TO AROUND 10 KFT THURSDAY MORNING.
GENERALLY LIGHT WINDS WILL CONTINUE TONIGHT.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...CIGS OF 3K-6K FT AND MOUNTAIN OBSCURATIONS WILL
CONTINUE ACROSS MUCH OF THE REGION THROUGH THURSDAY MORNING
FOLLOWED BY PARTIAL CLEARING AS A WEAK WEATHER SYSTEM GRADUALLY
MOVES TO THE EAST.
&&

PREVIOUS DISCUSSION...
ISSUED 250 PM PST WED DEC 17 2014

.SHORT TERM...EXTENSIVE LOW TO MID LEVEL CLOUDS WERE APPARENT FROM
SATELLITE LOOPS AND SURFACE OBSERVATIONS ACROSS THE FORECAST AREA
AND THESE WILL BE SLOW TO CLEAR OUT TONIGHT THROUGH THURSDAY. RECENT
RADAR LOOPS SHOWED A SLIGHT UPWARD TREND IN SCATTERED SHOWERS ACROSS
SOUTHERN CLARK AND CENTRAL MOHAVE COUNTIES EARLY THIS AFTERNOON AND
THE HRRR MODEL INDICATES THIS WILL BE THE PRIMARY AREA FOR
PRECIPITATION THROUGH EARLY THIS EVENING. ANY ADDITIONAL SNOW
AMOUNTS IN THE MOUNTAINS OF SOUTHERN NEVADA AND NORTHWEST ARIZONA
ARE EXPECTED TO BE VERY LIGHT AND THE WINTER WEATHER ADVISORY HAS
BEEN CANCELLED. THE MEAN TROUGH OVER THE REGION WILL DIG A
LITTLE TONIGHT AS A SHORTWAVE WEST OF POINT CONCEPTION DIVES TOWARD
NORTHERN BAJA. AN ADDITIONAL BAND OF MOISTURE ASSOCIATED WITH THIS
SHORTWAVE WILL MOVE INTO THE SOUTHERN SIERRA OVERNIGHT AND WILL
PRODUCE A CHANCE OF VERY LIGHT SNOW OVER THE EASTERN SLOPES...SO
POPS WERE INCREASED ACCORDINGLY.

THE TROUGH AXIS WILL SHIFT EASTWARD THURSDAY WITH GRADUAL CLEARING
THURSDAY AFTERNOON THROUGH THURSDAY NIGHT. LITTLE CHANGE IN
TEMPERATURES CAN BE EXPECTED.
&&

.LONG TERM...FRIDAY THROUGH TUESDAY.

MEDIUM RANGE MODELS SIMILAR TO 24 HOURS AGO INDICATING MOST OF THE
ENERGY ASSOCIATED WITH NEXT SHORTWAVE TROUGH WILL AFFECT CENTRAL
NEVADA NORTHWARD FRIDAY NIGHT INTO SATURDAY. WITH THAT SAID, LEFT IN
SLIGHT CHANCE POPS FROM NORTHERN INYO COUNTY EASTWARD TO NORTHERN
LINCOLN COUNTY TO ACCOUNT FOR ANY POTENTIAL SOUTHWARD SHIFT.

SUNDAY THROUGH TUESDAY THE LONGWAVE PATTERN WILL BE DOMINATED BY A
STRONG RIDGE ALONG THE WEST COAST WITH A TROUGH EAST OF THE ROCKIES.
SOUTHERN GREAT BASIN/MOJAVE DESERT WILL LIE UNDER A DRY NORTHWEST
FLOW. SURFACE HIGH DEVELOPING OVER THE NORTHERN GREAT BASIN WILL
LEAD TO AN INCREASE IN NORTH BREEZES DOWN THE COLORADO RIVER VALLEY
SOUTH OF HOOVER DAM SUNDAY-TUESDAY.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER CONDITIONS TODAY THROUGH THURSDAY ACCORDING
TO STANDARD OPERATING PROCEDURES.
&&

$$

UPDATE/AVIATION...STACHELSKI
SHORT TERM...ADAIR
LONG TERM...PIERCE

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER








    US Dept of Commerce
    National Oceanic and Atmospheric Administration
    National Weather Service
    1325 East West Highway
    Silver Spring, MD 20910
    Page Author: NWS Internet Services Team
Disclaimer
Information Quality
Credits
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities