[top]
000
FLUS45 KBYZ 212141
HWOBYZ
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
341 PM MDT MON MAY 21 2012
MTZ028>042-056>058-063>068-WYZ098-099-222145-
SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-NORTHERN ROSEBUD-CUSTER-
FALLON-NORTHERN STILLWATER-YELLOWSTONE-POWDER RIVER-CARTER-
SOUTHERN BIG HORN-EASTERN CARBON-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-RED LODGE FOOTHILLS-
NORTHERN BIG HORN-SOUTHERN ROSEBUD-JUDITH GAP-PARADISE VALLEY-
LIVINGSTON AREA-BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH MOUNTAINS-
CRAZY MOUNTAINS-NORTHEAST BIG HORN MOUNTAINS-SHERIDAN FOOTHILLS-
341 PM MDT MON MAY 21 2012
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...SOUTH CENTRAL MONTANA...SOUTHEAST MONTANA AND NORTH
CENTRAL WYOMING.
.DAY ONE...THIS AFTERNOON AND TONIGHT
THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER THIS AFTERNOON
AND TONIGHT IS LOW.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
A COOL AND UNSETTLED WEATHER PATTERN WILL TAKE SHAPE BEGINNING
TUESDAY AS A COLD FRONT MOVES THROUGH THE REGION. SNOW LEVELS ARE
EXPECTED TO FALL TO NEAR 7000 FEET LATER THIS WEEK WITH PERIODS OF
ACCUMULATING SNOWFALL POSSIBLE AT TIMES TUESDAY NIGHT THROUGH THE
END OF THE WEEK. THE LOWER ELEVATIONS WILL SEE UNSEASONABLY COOL
AND WET WEATHER THIS WEEK AS WELL AFFECTING OUTDOOR ACTIVITIES.
THOSE PLANNING TO TRAVEL OVER THE HOLIDAY WEEKEND...ESPECIALLY ON
THE BEARTOOTH HIGHWAY...SHOULD BE AWARE OF THIS PATTERN CHANGE AND
MONITOR FUTURE FORECASTS AND STATEMENTS.
.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
$$
[top]
000
WWUS85 KRIW 212045
SPSRIW
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
245 PM MDT MON MAY 21 2012
WYZ001>020-022>030-222100-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
245 PM MDT MON MAY 21 2012
...A MAJOR CHANGE TO COLDER AND UNSETTLED WEATHER IS EXPECTED FOR
THE SECOND HALF OF THE WEEK...
A STRONG COLD FRONT WILL BLAST EAST ACROSS THE AREA ON TUESDAY
BRINGING WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS TO THE
NORTHERN MOUNTAINS WITH GRADUALLY LOWERING SNOW LEVELS. THIS COLD
FRONT IS JUST THE FIRST IN A SERIES OF STORM SYSTEMS EXPECTED TO
IMPACT THE AREA INTO THE MEMORIAL DAY WEEKEND. A MAJOR STORM SYSTEM
MAY TAKE SHAPE FRIDAY INTO FRIDAY NIGHT AS A LARGE LOW PRESSURE
SYSTEM STRENGTHENS OVER THE GREAT BASIN LEADING TO WIDESPREAD VALLEY
RAIN AND MOUNTAIN SNOWFALL...ESPECIALLY ACROSS CENTRAL WYOMING.
THE NORTHERN MOUNTAINS...INCLUDING YELLOWSTONE NATIONAL PARK...WILL
BE MOST IMPACTED INITIALLY AS SOME SNOW WILL DEVELOP OVER THE
HIGHER PEAKS TUESDAY AND LOWER TO NEAR THE VALLEY FLOOR ACROSS THE
NORTHWEST TUESDAY NIGHT. IT WILL REMAIN COOL AND UNSETTLED IN THE
NORTHERN MOUNTAINS WEDNESDAY THROUGH THURSDAY WITH PERIODS OF LIGHT
RAIN AT THE LOWEST ELEVATIONS WITH SOME OCCASIONAL LIGHT SNOW IN
THE MOUNTAINS. SOME HEAVIER SNOW IS POSSIBLE IN THE NORTHWEST
MOUNTAINS THURSDAY AFTERNOON THROUGH THURSDAY NIGHT.
BY EARLY FRIDAY...THE POTENTIAL FOR A SIGNIFICANT STORM SYSTEM WILL
START TO TAKE SHAPE FOR AREAS EAST OF THE DIVIDE. WIDESPREAD
MODERATE TO LOCALLY HEAVY RAIN MAY DEVELOP OVER THE CENTRAL BASINS
WITH HEAVY WET SNOW IN THE NEARBY FOOTHILLS AND MOUNTAINS. SOME
LIGHT TO LOCALLY MODERATE SNOW WILL CONTINUE IN YELLOWSTONE NATIONAL
PARK...THE ABSAROKAS AND BIGHORNS ALSO.
THE STORM SYSTEM IS THEN EXPECTED TO GRADUALLY LIFT NORTHWARD INTO
MONTANA SATURDAY INTO SUNDAY. COLD VALLEY RAIN AND MOUNTAIN SNOW WILL
CONTINUE ACROSS THE NORTHERN MOUNTAINS...INCLUDING YELLOWSTONE
NATIONAL PARK THROUGH SATURDAY. TEMPERATURES WILL START TO RECOVER ON
SUNDAY IN THE NORTHERN MOUNTAINS BUT IT WILL STILL REMAIN QUITE
UNSETTLED IN YELLOWSTONE NATIONAL PARK ON SUNDAY WITH LIGHT VALLEY
RAIN AND HIGHER ELEVATION SNOW SHOWERS.
MEMORIAL DAY LOOKS MUCH DRIER WITH MORE SEASONABLE TEMPERATURES.
TRAVELLERS AND THOSE WITH OUTDOOR PLANS SHOULD MONITOR THE LATEST
FORECASTS FROM THE NATIONAL WEATHER SERVICE ON THIS EXPECTED MAJOR
CHANGE TO COLDER AND UNSETTLED WEATHER BEGINNING IN THE NORTHWEST
TUESDAY AND SPREADING ACROSS ALL OF THE AREA FOR THE SECOND HALF OF
THE WEEK INTO THE MEMORIAL DAY WEEKEND. SIGNIFICANT SNOWFALL MAY
ACCUMULATE IN THE CENTRAL AND NORTHERN MOUNTAINS DURING THIS
TIMEFRAME. THE LATEST FORECAST CAN BE FOUND AT
WWW.WEATHER.GOV/RIVERTON.
$$
SKRBAC
000
WWUS85 KRIW 212045
SPSRIW
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
245 PM MDT MON MAY 21 2012
WYZ001>020-022>030-222100-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
245 PM MDT MON MAY 21 2012
...A MAJOR CHANGE TO COLDER AND UNSETTLED WEATHER IS EXPECTED FOR
THE SECOND HALF OF THE WEEK...
A STRONG COLD FRONT WILL BLAST EAST ACROSS THE AREA ON TUESDAY
BRINGING WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS TO THE
NORTHERN MOUNTAINS WITH GRADUALLY LOWERING SNOW LEVELS. THIS COLD
FRONT IS JUST THE FIRST IN A SERIES OF STORM SYSTEMS EXPECTED TO
IMPACT THE AREA INTO THE MEMORIAL DAY WEEKEND. A MAJOR STORM SYSTEM
MAY TAKE SHAPE FRIDAY INTO FRIDAY NIGHT AS A LARGE LOW PRESSURE
SYSTEM STRENGTHENS OVER THE GREAT BASIN LEADING TO WIDESPREAD VALLEY
RAIN AND MOUNTAIN SNOWFALL...ESPECIALLY ACROSS CENTRAL WYOMING.
THE NORTHERN MOUNTAINS...INCLUDING YELLOWSTONE NATIONAL PARK...WILL
BE MOST IMPACTED INITIALLY AS SOME SNOW WILL DEVELOP OVER THE
HIGHER PEAKS TUESDAY AND LOWER TO NEAR THE VALLEY FLOOR ACROSS THE
NORTHWEST TUESDAY NIGHT. IT WILL REMAIN COOL AND UNSETTLED IN THE
NORTHERN MOUNTAINS WEDNESDAY THROUGH THURSDAY WITH PERIODS OF LIGHT
RAIN AT THE LOWEST ELEVATIONS WITH SOME OCCASIONAL LIGHT SNOW IN
THE MOUNTAINS. SOME HEAVIER SNOW IS POSSIBLE IN THE NORTHWEST
MOUNTAINS THURSDAY AFTERNOON THROUGH THURSDAY NIGHT.
BY EARLY FRIDAY...THE POTENTIAL FOR A SIGNIFICANT STORM SYSTEM WILL
START TO TAKE SHAPE FOR AREAS EAST OF THE DIVIDE. WIDESPREAD
MODERATE TO LOCALLY HEAVY RAIN MAY DEVELOP OVER THE CENTRAL BASINS
WITH HEAVY WET SNOW IN THE NEARBY FOOTHILLS AND MOUNTAINS. SOME
LIGHT TO LOCALLY MODERATE SNOW WILL CONTINUE IN YELLOWSTONE NATIONAL
PARK...THE ABSAROKAS AND BIGHORNS ALSO.
THE STORM SYSTEM IS THEN EXPECTED TO GRADUALLY LIFT NORTHWARD INTO
MONTANA SATURDAY INTO SUNDAY. COLD VALLEY RAIN AND MOUNTAIN SNOW WILL
CONTINUE ACROSS THE NORTHERN MOUNTAINS...INCLUDING YELLOWSTONE
NATIONAL PARK THROUGH SATURDAY. TEMPERATURES WILL START TO RECOVER ON
SUNDAY IN THE NORTHERN MOUNTAINS BUT IT WILL STILL REMAIN QUITE
UNSETTLED IN YELLOWSTONE NATIONAL PARK ON SUNDAY WITH LIGHT VALLEY
RAIN AND HIGHER ELEVATION SNOW SHOWERS.
MEMORIAL DAY LOOKS MUCH DRIER WITH MORE SEASONABLE TEMPERATURES.
TRAVELLERS AND THOSE WITH OUTDOOR PLANS SHOULD MONITOR THE LATEST
FORECASTS FROM THE NATIONAL WEATHER SERVICE ON THIS EXPECTED MAJOR
CHANGE TO COLDER AND UNSETTLED WEATHER BEGINNING IN THE NORTHWEST
TUESDAY AND SPREADING ACROSS ALL OF THE AREA FOR THE SECOND HALF OF
THE WEEK INTO THE MEMORIAL DAY WEEKEND. SIGNIFICANT SNOWFALL MAY
ACCUMULATE IN THE CENTRAL AND NORTHERN MOUNTAINS DURING THIS
TIMEFRAME. THE LATEST FORECAST CAN BE FOUND AT
WWW.WEATHER.GOV/RIVERTON.
$$
SKRBAC
000
WWUS85 KRIW 212045
SPSRIW
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
245 PM MDT MON MAY 21 2012
WYZ001>020-022>030-222100-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
245 PM MDT MON MAY 21 2012
...A MAJOR CHANGE TO COLDER AND UNSETTLED WEATHER IS EXPECTED FOR
THE SECOND HALF OF THE WEEK...
A STRONG COLD FRONT WILL BLAST EAST ACROSS THE AREA ON TUESDAY
BRINGING WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS TO THE
NORTHERN MOUNTAINS WITH GRADUALLY LOWERING SNOW LEVELS. THIS COLD
FRONT IS JUST THE FIRST IN A SERIES OF STORM SYSTEMS EXPECTED TO
IMPACT THE AREA INTO THE MEMORIAL DAY WEEKEND. A MAJOR STORM SYSTEM
MAY TAKE SHAPE FRIDAY INTO FRIDAY NIGHT AS A LARGE LOW PRESSURE
SYSTEM STRENGTHENS OVER THE GREAT BASIN LEADING TO WIDESPREAD VALLEY
RAIN AND MOUNTAIN SNOWFALL...ESPECIALLY ACROSS CENTRAL WYOMING.
THE NORTHERN MOUNTAINS...INCLUDING YELLOWSTONE NATIONAL PARK...WILL
BE MOST IMPACTED INITIALLY AS SOME SNOW WILL DEVELOP OVER THE
HIGHER PEAKS TUESDAY AND LOWER TO NEAR THE VALLEY FLOOR ACROSS THE
NORTHWEST TUESDAY NIGHT. IT WILL REMAIN COOL AND UNSETTLED IN THE
NORTHERN MOUNTAINS WEDNESDAY THROUGH THURSDAY WITH PERIODS OF LIGHT
RAIN AT THE LOWEST ELEVATIONS WITH SOME OCCASIONAL LIGHT SNOW IN
THE MOUNTAINS. SOME HEAVIER SNOW IS POSSIBLE IN THE NORTHWEST
MOUNTAINS THURSDAY AFTERNOON THROUGH THURSDAY NIGHT.
BY EARLY FRIDAY...THE POTENTIAL FOR A SIGNIFICANT STORM SYSTEM WILL
START TO TAKE SHAPE FOR AREAS EAST OF THE DIVIDE. WIDESPREAD
MODERATE TO LOCALLY HEAVY RAIN MAY DEVELOP OVER THE CENTRAL BASINS
WITH HEAVY WET SNOW IN THE NEARBY FOOTHILLS AND MOUNTAINS. SOME
LIGHT TO LOCALLY MODERATE SNOW WILL CONTINUE IN YELLOWSTONE NATIONAL
PARK...THE ABSAROKAS AND BIGHORNS ALSO.
THE STORM SYSTEM IS THEN EXPECTED TO GRADUALLY LIFT NORTHWARD INTO
MONTANA SATURDAY INTO SUNDAY. COLD VALLEY RAIN AND MOUNTAIN SNOW WILL
CONTINUE ACROSS THE NORTHERN MOUNTAINS...INCLUDING YELLOWSTONE
NATIONAL PARK THROUGH SATURDAY. TEMPERATURES WILL START TO RECOVER ON
SUNDAY IN THE NORTHERN MOUNTAINS BUT IT WILL STILL REMAIN QUITE
UNSETTLED IN YELLOWSTONE NATIONAL PARK ON SUNDAY WITH LIGHT VALLEY
RAIN AND HIGHER ELEVATION SNOW SHOWERS.
MEMORIAL DAY LOOKS MUCH DRIER WITH MORE SEASONABLE TEMPERATURES.
TRAVELLERS AND THOSE WITH OUTDOOR PLANS SHOULD MONITOR THE LATEST
FORECASTS FROM THE NATIONAL WEATHER SERVICE ON THIS EXPECTED MAJOR
CHANGE TO COLDER AND UNSETTLED WEATHER BEGINNING IN THE NORTHWEST
TUESDAY AND SPREADING ACROSS ALL OF THE AREA FOR THE SECOND HALF OF
THE WEEK INTO THE MEMORIAL DAY WEEKEND. SIGNIFICANT SNOWFALL MAY
ACCUMULATE IN THE CENTRAL AND NORTHERN MOUNTAINS DURING THIS
TIMEFRAME. THE LATEST FORECAST CAN BE FOUND AT
WWW.WEATHER.GOV/RIVERTON.
$$
SKRBAC
[top]
000
FLUS45 KCYS 211604
HWOCYS
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
1004 AM MDT MON MAY 21 2012
WYZ101>119-221115-
CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY-
NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS-
SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY-
NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY-
SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE-
LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS-
CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY-
1004 AM MDT MON MAY 21 2012
THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING...
SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING.
.DAY ONE...TODAY AND TONIGHT
ISOLATED THUNDERSTORMS WILL AFFECT THE AREA TO THE EAST OF A
LARAMIE TO LUSK LINE AFTER 2 PM. THE ACTIVITY WILL MOVE TO THE
SOUTHEAST AND WILL END BY 7 PM. NO SEVERE WEATHER IS EXPECTED...
BUT BRIEF WIND GUSTS TO 40 MPH WILL BE POSSIBLE WITH THE STORMS.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
WEST TO SOUTHWEST WINDS OF 20 TO 30 MPH WITH GUSTS TO 45 MPH
WILL COMBINE WITH LOW HUMIDITY TO PRODUCE ELEVATED TO CRITICAL
FIRE WEATHER CONDITIONS OVER PORTIONS OF SOUTHEAST WYOMING.
THUNDERSTORMS WILL BE POSSIBLE ACROSS MUCH OF SOUTHEAST WYOMING
TUESDAY EVENING AND AGAIN WEDNESDAY AFTERNOON.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.
&&
THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE
$$
NEZ002-003-019>021-054-055-095-096-221115-
DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
NORTH SIOUX-SOUTH SIOUX-
1004 AM MDT MON MAY 21 2012
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA
PANHANDLE.
.DAY ONE...TODAY AND TONIGHT
A WIDELY SCATTERED COVERAGE OF THUNDERSTORMS WILL AFFECT MUCH OF
THE WESTERN NEBRASKA PANHANDLE...MAINLY AFTER 3 PM. THE ACTIVITY
WILL BE MORE WIDESPREAD TO THE EAST OF A KIMBALL TO BRIDGEPORT
LINE. THE STORMS WILL MOVE TO THE SOUTHEAST AND CONTINUE THROUGH
8 PM. SEVERE WEATHER IS NOT EXPECTED...WITH BRIEG WIND GUSTS TO 45
MPH BEING THE MAIN WEATHER PRODUCED FROM THE STORMS. HOWEVER...
OVER THE SOUTHEAST PANHANDLE...SMALL HAIL AND MODERATE RAINFALL
WILL BE POSSIBLE.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
THUNDERSTORMS WILL BE POSSIBLE WEDNESDAY AFTERNOON AND EVENING.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.
&&
THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE
$$
WEILAND
000
FLUS45 KBYZ 211145
HWOBYZ
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
545 AM MDT MON MAY 21 2012
MTZ028>042-056>058-063>068-WYZ098-099-221145-
SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-NORTHERN ROSEBUD-CUSTER-
FALLON-NORTHERN STILLWATER-YELLOWSTONE-POWDER RIVER-CARTER-
SOUTHERN BIG HORN-EASTERN CARBON-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-RED LODGE FOOTHILLS-
NORTHERN BIG HORN-SOUTHERN ROSEBUD-JUDITH GAP-PARADISE VALLEY-
LIVINGSTON AREA-BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH MOUNTAINS-
CRAZY MOUNTAINS-NORTHEAST BIG HORN MOUNTAINS-SHERIDAN FOOTHILLS-
545 AM MDT MON MAY 21 2012
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...SOUTH CENTRAL MONTANA...SOUTHEAST MONTANA AND NORTH
CENTRAL WYOMING.
.DAY ONE...TODAY AND TONIGHT
THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER TODAY AND
TONIGHT IS LOW.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
A COOL AND UNSETTLED WEATHER PATTERN WILL TAKE SHAPE BEGINNING
TUESDAY. SNOW LEVELS ARE EXPECTED TO FALL TO NEAR 7000 FEET BY
TUESDAY NIGHT...AND PERIODS OF ACCUMULATING SNOWFALL ARE POSSIBLE
OVER THE MOUNTAINS TUESDAY NIGHT THROUGH THE END OF THE WEEK.
THOSE WITH PLANS IN THE HIGH COUNTRY SHOULD TAKE PRECAUTIONS AND
BE PREPARED FOR COOL AND POTENTIALLY WINTRY CONDITIONS.
THE POTENTIAL EXISTS FOR A STRONG WEATHER SYSTEM TO IMPACT THE
AREA BEGINNING FRIDAY AND LASTING THROUGH SATURDAY OR SUNDAY.
THOUGH DETAILS ARE UNCERTAIN AT THIS TIME...SIGNIFICANT
PRECIPITATION IS A POSSIBILITY ACROSS MUCH OF THE AREA...WITH RAIN
AT LOWER ELEVATIONS AND SNOW IN THE HIGH COUNTRY. THOSE PLANNING
TO TRAVEL OVER THE HOLIDAY WEEKEND...ESPECIALLY ON THE BEARTOOTH
HIGHWAY...SHOULD BE AWARE OF THIS PATTERN CHANGE AND MONITOR
FUTURE FORECASTS AND STATEMENTS.
.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
$$
JKL
[top]
000
FLUS43 KUNR 211133
HWOUNR
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RAPID CITY SD
529 AM MDT MON MAY 21 2012
SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-221300-
BENNETT-BUTTE-CENTRAL BLACK HILLS-CUSTER CO PLAINS-FALL RIVER-HAAKON-
HARDING-HERMOSA FOOT HILLS-JACKSON-MELLETTE-NORTHEASTERN CROOK-
NORTHERN BLACK HILLS-NORTHERN CAMPBELL-NORTHERN FOOT HILLS-
NORTHERN MEADE CO PLAINS-PENNINGTON CO PLAINS-PERKINS-RAPID CITY-
SHANNON-SOUTHERN BLACK HILLS-SOUTHERN CAMPBELL-SOUTHERN FOOT HILLS-
SOUTHERN MEADE CO PLAINS-STURGIS/PIEDMONT FOOT HILLS-TODD-TRIPP-
WESTERN CROOK-WESTON-WYOMING BLACK HILLS-ZIEBACH-
529 AM MDT (629 AM CDT) MON MAY 21 2012
THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND
NORTHEASTERN WYOMING.
.DAY ONE...TODAY AND TONIGHT
ISOLATED THUNDERSTORMS MAY OCCUR LATE THIS AFTERNOON AND EARLY THIS
EVENING OVER CENTRAL SOUTH DAKOTA. ORGANIZED SEVERE THUNDERSTORMS
ARE NOT EXPECTED.
THE GRASSLAND FIRE DANGER INDEX WILL BE IN THE EXTREME CATEGORY OVER
FALL RIVER COUNTY THIS AFTERNOON.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
THERE IS A CHANCE OF THUNDERSTORMS TUESDAY THROUGH SUNDAY.
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS LATE TUESDAY
AFTERNOON AND EVENING EAST OF A LINE FROM FAITH TO PHILIP. DAMAGING
WIND WILL BE THE MAIN THREAT...BUT LARGE HAIL IS ALSO POSSIBLE.
ISOLATED SEVERE THUNDERSTORMS WITH DAMAGING WINDS ARE ALSO POSSIBLE
ACROSS WESTERN SOUTH DAKOTA TUESDAY AFTERNOON.
THE GRASSLAND FIRE DANGER INDEX WILL BE IN THE EXTREME CATEGORY
OVER PORTIONS OF SOUTHWEST AND WEST CENTRAL SOUTH DAKOTA TUESDAY
AFTERNOON.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.
$$
000
FLUS45 KCYS 211107
HWOCYS
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
507 AM MDT MON MAY 21 2012
WYZ101>119-221115-
CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY-
NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS-
SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY-
NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY-
SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE-
LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS-
CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY-
507 AM MDT MON MAY 21 2012
THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING...
SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING.
.DAY ONE...TODAY AND TONIGHT
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
WEST TO SOUTHWEST WINDS OF 20 TO 30 MPH WITH GUSTS TO 45 MPH
WILL COMBINE WITH LOW HUMIDITY TO PRODUCE ELEVATED TO CRITICAL
FIRE WEATHER CONDITIONS OVER PORTIONS OF SOUTHEAST WYOMING.
THUNDERSTORMS WILL BE POSSIBLE ACROSS MUCH OF SOUTHEAST WYOMING
TUESDAY EVENING AND AGAIN WEDNESDAY AFTERNOON.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.
&&
THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE
$$
NEZ002-003-019>021-054-055-095-096-221115-
DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
NORTH SIOUX-SOUTH SIOUX-
507 AM MDT MON MAY 21 2012
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA
PANHANDLE.
.DAY ONE...TODAY AND TONIGHT
ISOLATED THUNDERSTORMS ARE EXPECTED OVER SOUTHERN PORTIONS OF THE
NEBRASKA PANHANDLE THIS AFTERNOON AND EARLY EVENING. SEVERE
THUNDERSTORMS ARE NOT LIKELY BUT A FEW STORMS MAY PRODUCE SMALL
HAIL AND GUSTY WINDS.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
THUNDERSTORMS WILL BE POSSIBLE WEDNESDAY AFTERNOON AND EVENING.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.
&&
THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE
$$
LIEBL
[top]
000
FLUS45 KRIW 211100
HWORIW
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
500 AM MDT MON MAY 21 2012
WYZ001>020-022>030-221100-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
500 AM MDT MON MAY 21 2012
THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.
.DAY ONE...TODAY AND TONIGHT
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
TUESDAY...STRONG WIND WILL DEVELOP ALONG THE WIND CORRIDOR FROM ROCK
SPRINGS TO CASPER IN THE AFTERNOON. ISOLATED THUNDERSTORMS...SOME
STORMS COULD BE QUITE STRONG ACROSS NORTH CENTRAL WYOMING TUESDAY
AFTERNOON.
FRIDAY AND FRIDAY NIGHT...SIGNIFICANT SNOW ACCUMULATIONS POSSIBLE
ABOVE 8000 FEET IN THE CENTRAL AND NORTHERN MOUNTAINS. AREAS OF
MODERATE TO HEAVY RAIN POSSIBLE ACROSS THE CENTRAL BASINS.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.
$$
TEAM RIVERTON
| 
