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000
FXUS61 KPBZ 232341
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
741 PM EDT WED APR 23 2014

.SYNOPSIS...
HIGH PRESSURE WILL KEEP CONDITIONS DRY AND COOL THROUGH THURSDAY. A
COLD FRONT WILL BRING ANOTHER ROUND OF SHOWERS FRIDAY.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
DRIER BOUNDARY LAYER AIR AND LARGE SCALE SUBSIDENCE ARE WORKING
INTO THE REGION FROM THE NORTHWEST AND QUICKLY ERODING THE
STRATOCUMULUS DECK THAT HAS BEEN RESIDENT OVER THE AREA ALL DAY.
THIS TREND WILL CONTINUE ALL EVENING UNTIL WE BECOME FULLY CLEAR
ACROSS THE BOARD. HIGH CLOUDS WELL IN ADVANCE OF THE NEXT SYSTEM
THAT WILL AFFECT THE REGION SHOULD START TO ADVANCE TOWARD THE
AREA TOWARD MORNING...HOWEVER THIS SYSTEM IS STILL A LONG LONG
WAVE FROM AFFECTING US OTHER THAN WITH CIRRUS. FRIES

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH SATURDAY/...
PLENTIFUL SUNSHINE WILL BE PRESENT ON THURSDAY AS SUBSIDENCE
DOMINATES. RIDGE OF HIGH PRESSURE WILL BREAK DOWN AS A SHORTWAVE
TROUGH APPROACHES FROM THE WEST BY FRIDAY MORNING. ASSOCIATED COLD FRONT
WITH SHOWERS ARE EXPECTED TO CROSS THE REGION BY FRIDAY
MORNING/AFTERNOON. INSTABILITY AT THIS TIME REMAINS INSUFFICIENT
TO PRODUCE THUNDER AND HAVE THEREFORE CONTINUED TO KEEP OUT OF
FORECAST.

A SECONDARY FRONT WILL APPROACH THE REGION BY EARLY SATURDAY
ASSOCIATED WITH THE UPPER LEVEL CLOSED LOW SHIFTING SOUTHEAST
TOWARDS NEW YORK. LIMITED MOISTURE IS DIAGNOSED WITH THIS FEATURE
AND THUS HAVE ADJUSTED TO CHANCE POPS ON SATURDAY.

TEMPERATURES ARE TO REMAIN MOSTLY BELOW NORMAL THROUGH THE PERIOD.

&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
THE NEXT SYSTEM DEVELOPING ACROSS THE CENTRAL PLAINS WILL SLOWLY
DRIFT EAST. THE SYSTEM WILL BRING A CHANCE OF RAIN BY MONDAY
NIGHT...WITH SCATTERED SHOWERS AND BELOW NORMAL TEMPERATURES
CONTINUING THROUGH THE REST OF THE PERIOD.

&&

.AVIATION /00Z THURSDAY THROUGH SUNDAY/...
VFR CONDITIONS EXPECTED FOR THE DURATION OF THE TAF PERIOD AS HIGH
PRESSURE BUILDS IN. SFC WINDS WILL REMAIN LIGHT THROUGH THURSDAY.

.OUTLOOK.../THURSDAY NIGHT THROUGH SUNDAY/...
THE NEXT CHANCE FOR GENERAL RESTRICTIONS WILL COME WITH A FRIDAY
COLDFRONT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$







000
FXUS61 KPBZ 232203
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
603 PM EDT WED APR 23 2014

.SYNOPSIS...
HIGH PRESSURE WILL KEEP CONDITIONS DRY AND COOL THROUGH THURSDAY. A
COLD FRONT WILL BRING ANOTHER ROUND OF SHOWERS FRIDAY.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
DRIER BOUNDARY LAYER AIR AND LARGE SCALE SUBSIDENCE ARE WORKING
INTO THE REGION FROM THE NORTHWEST AND QUICKLY ERODING THE
STRATOCUMULUS DECK THAT HAS BEEN RESIDENT OVER THE AREA ALL DAY.
THIS TREND WILL CONTINUE ALL EVENING UNTIL WE BECOME FULLY CLEAR
ACROSS THE BOARD. HIGH CLOUDS WELL IN ADVANCE OF THE NEXT SYSTEM
THAT WILL AFFECT THE REGION SHOULD START TO ADVANCE TOWARD THE
AREA TOWARD MORNING...HOWEVER THIS SYSTEM IS STILL A LONG LONG
WAVE FROM AFFECTING US OTHER THAN WITH CIRRUS. FRIES

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH SATURDAY/...
PLENTIFUL SUNSHINE WILL BE PRESENT ON THURSDAY AS SUBSIDENCE
DOMINATES. RIDGE OF HIGH PRESSURE WILL BREAK DOWN AS A SHORTWAVE
TROUGH APPROACHES FROM THE WEST BY FRIDAY MORNING. ASSOCIATED COLD FRONT
WITH SHOWERS ARE EXPECTED TO CROSS THE REGION BY FRIDAY
MORNING/AFTERNOON. INSTABILITY AT THIS TIME REMAINS INSUFFICIENT
TO PRODUCE THUNDER AND HAVE THEREFORE CONTINUED TO KEEP OUT OF
FORECAST.

A SECONDARY FRONT WILL APPROACH THE REGION BY EARLY SATURDAY
ASSOCIATED WITH THE UPPER LEVEL CLOSED LOW SHIFTING SOUTHEAST
TOWARDS NEW YORK. LIMITED MOISTURE IS DIAGNOSED WITH THIS FEATURE
AND THUS HAVE ADJUSTED TO CHANCE POPS ON SATURDAY.

TEMPERATURES ARE TO REMAIN MOSTLY BELOW NORMAL THROUGH THE PERIOD.

&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
THE NEXT SYSTEM DEVELOPING ACROSS THE CENTRAL PLAINS WILL SLOWLY
DRIFT EAST. THE SYSTEM WILL BRING A CHANCE OF RAIN BY MONDAY
NIGHT...WITH SCATTERED SHOWERS AND BELOW NORMAL TEMPERATURES
CONTINUING THROUGH THE REST OF THE PERIOD.

&&

.AVIATION /22Z WEDNESDAY THROUGH MONDAY/...
GRADUAL IMPROVEMENT TO VFR...AND WIND DIMINISHMENT CAN BE EXPECTED
INTO THE EVE AS HIGH PRES BLDS AND COLD ADVCTN EASES. VFR AND LGT
WIND WL CONT THROUGH THURSDAY.

.OUTLOOK.../THURSDAY NIGHT THROUGH SUNDAY/...
THE NXT CHC FOR GENL RESTRICTIONS WL COME WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$







000
FXUS61 KPBZ 232203
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
603 PM EDT WED APR 23 2014

.SYNOPSIS...
HIGH PRESSURE WILL KEEP CONDITIONS DRY AND COOL THROUGH THURSDAY. A
COLD FRONT WILL BRING ANOTHER ROUND OF SHOWERS FRIDAY.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
DRIER BOUNDARY LAYER AIR AND LARGE SCALE SUBSIDENCE ARE WORKING
INTO THE REGION FROM THE NORTHWEST AND QUICKLY ERODING THE
STRATOCUMULUS DECK THAT HAS BEEN RESIDENT OVER THE AREA ALL DAY.
THIS TREND WILL CONTINUE ALL EVENING UNTIL WE BECOME FULLY CLEAR
ACROSS THE BOARD. HIGH CLOUDS WELL IN ADVANCE OF THE NEXT SYSTEM
THAT WILL AFFECT THE REGION SHOULD START TO ADVANCE TOWARD THE
AREA TOWARD MORNING...HOWEVER THIS SYSTEM IS STILL A LONG LONG
WAVE FROM AFFECTING US OTHER THAN WITH CIRRUS. FRIES

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH SATURDAY/...
PLENTIFUL SUNSHINE WILL BE PRESENT ON THURSDAY AS SUBSIDENCE
DOMINATES. RIDGE OF HIGH PRESSURE WILL BREAK DOWN AS A SHORTWAVE
TROUGH APPROACHES FROM THE WEST BY FRIDAY MORNING. ASSOCIATED COLD FRONT
WITH SHOWERS ARE EXPECTED TO CROSS THE REGION BY FRIDAY
MORNING/AFTERNOON. INSTABILITY AT THIS TIME REMAINS INSUFFICIENT
TO PRODUCE THUNDER AND HAVE THEREFORE CONTINUED TO KEEP OUT OF
FORECAST.

A SECONDARY FRONT WILL APPROACH THE REGION BY EARLY SATURDAY
ASSOCIATED WITH THE UPPER LEVEL CLOSED LOW SHIFTING SOUTHEAST
TOWARDS NEW YORK. LIMITED MOISTURE IS DIAGNOSED WITH THIS FEATURE
AND THUS HAVE ADJUSTED TO CHANCE POPS ON SATURDAY.

TEMPERATURES ARE TO REMAIN MOSTLY BELOW NORMAL THROUGH THE PERIOD.

&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
THE NEXT SYSTEM DEVELOPING ACROSS THE CENTRAL PLAINS WILL SLOWLY
DRIFT EAST. THE SYSTEM WILL BRING A CHANCE OF RAIN BY MONDAY
NIGHT...WITH SCATTERED SHOWERS AND BELOW NORMAL TEMPERATURES
CONTINUING THROUGH THE REST OF THE PERIOD.

&&

.AVIATION /22Z WEDNESDAY THROUGH MONDAY/...
GRADUAL IMPROVEMENT TO VFR...AND WIND DIMINISHMENT CAN BE EXPECTED
INTO THE EVE AS HIGH PRES BLDS AND COLD ADVCTN EASES. VFR AND LGT
WIND WL CONT THROUGH THURSDAY.

.OUTLOOK.../THURSDAY NIGHT THROUGH SUNDAY/...
THE NXT CHC FOR GENL RESTRICTIONS WL COME WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$








000
FXUS61 KPBZ 231803
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
203 PM EDT WED APR 23 2014

.SYNOPSIS...
HIGH PRESSURE WILL KEEP CONDITIONS DRY AND COOL THROUGH THURSDAY. A
COLD FRONT WILL BRING ANOTHER ROUND OF SHOWERS FRIDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
BUILDING SURFACE HIGH PRESSURE HAS BEGUN TO TAKE ITS EFFECTS ON
SLOWLY DECREASING STRATOCU AS SEEN FROM LATEST VISIBLE SATELLITE.
ANY SUNSHINE THAT MANAGES TO MAKE ITS WAY THROUGH LATER THIS
AFTERNOON WILL HAVE LITLE IMPACT ON TEMPERATURES. A CLEAR SKY IS
EXPECTED OVERNIGHT WITH THE EXCEPTION OF CIRRUS MOVING OVER THE
REGION LATE TONIGHT FROM THE WEST. TEMPERATURES WILL STAY WELL
BELOW NORMAL.

&&

.SHORT TERM /THURSDAY THROUGH SATURDAY/...
PLENTIFUL SUNSHINE WILL BE PRESENT ON THURSDAY AS SUBISDENCE
DOMINATES. RIDGE OF HIGH PRESSURE WILL BREAK DOWN AS A SHORTWAVE
TROUGH APPROACHES FROM THE WEST BY FRIDAY MORNING. ASSOCIATED COLD FRONT
WITH SHOWERS ARE EXPECTED TO CROSS THE REGION BY FRIDAY
MORNING/AFTERNOON. INSTABILITY AT THIS TIME REMAINS INSUFFICIENT
TO PRODUCE THUNDER AND HAVE THEREFORE CONTINUED TO KEEP OUT OF
FORECAST.

A SECONDARY FRONT WILL APPROACH THE REGION BY EARLY SATURDAY
ASSOCIATED WITH THE UPPER LEVEL CLOSED LOW SHIFTING SOUTHEAST
TOWARDS NEW YORK. LIMITED MOISTURE IS DIAGNOSED WITH THIS FEATURE
AND THUS HAVE ADJUSTED TO CHANCE POPS ON SATURDAY.

TEMPERATURES ARE TO REMAIN MOSTLY BELOW NORMAL THROUGH THE PERIOD.


&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
THE NEXT SYSTEM DEVELOPING ACROSS THE CENTRAL PLAINS WILL SLOWLY
DRIFT EAST. THE SYSTEM WILL BRING A CHANCE OF RAIN BY MONDAY
NIGHT...WITH SCATTERED SHOWERS AND BELOW NORMAL TEMPERATURES
CONTINUING THROUGH THE REST OF THE PERIOD.

&&

.AVIATION /17Z WEDNESDAY THROUGH SUNDAY/...
GRADUAL IMPROVEMENT TO VFR...AND WIND DIMINISHMENT CAN BE EXPECTED
INTO THE EVE AS HIGH PRES BLDS AND COLD ADVCTN EASES. VFR AND LGT
WIND WL CONT THROUGH THURSDAY.

.OUTLOOK.../THURSDAY NIGHT THROUGH SUNDAY/...
THE NXT CHC FOR GENL RESTRICTIONS WL COME WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$








000
FXUS61 KPBZ 231803
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
203 PM EDT WED APR 23 2014

.SYNOPSIS...
HIGH PRESSURE WILL KEEP CONDITIONS DRY AND COOL THROUGH THURSDAY. A
COLD FRONT WILL BRING ANOTHER ROUND OF SHOWERS FRIDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
BUILDING SURFACE HIGH PRESSURE HAS BEGUN TO TAKE ITS EFFECTS ON
SLOWLY DECREASING STRATOCU AS SEEN FROM LATEST VISIBLE SATELLITE.
ANY SUNSHINE THAT MANAGES TO MAKE ITS WAY THROUGH LATER THIS
AFTERNOON WILL HAVE LITLE IMPACT ON TEMPERATURES. A CLEAR SKY IS
EXPECTED OVERNIGHT WITH THE EXCEPTION OF CIRRUS MOVING OVER THE
REGION LATE TONIGHT FROM THE WEST. TEMPERATURES WILL STAY WELL
BELOW NORMAL.

&&

.SHORT TERM /THURSDAY THROUGH SATURDAY/...
PLENTIFUL SUNSHINE WILL BE PRESENT ON THURSDAY AS SUBISDENCE
DOMINATES. RIDGE OF HIGH PRESSURE WILL BREAK DOWN AS A SHORTWAVE
TROUGH APPROACHES FROM THE WEST BY FRIDAY MORNING. ASSOCIATED COLD FRONT
WITH SHOWERS ARE EXPECTED TO CROSS THE REGION BY FRIDAY
MORNING/AFTERNOON. INSTABILITY AT THIS TIME REMAINS INSUFFICIENT
TO PRODUCE THUNDER AND HAVE THEREFORE CONTINUED TO KEEP OUT OF
FORECAST.

A SECONDARY FRONT WILL APPROACH THE REGION BY EARLY SATURDAY
ASSOCIATED WITH THE UPPER LEVEL CLOSED LOW SHIFTING SOUTHEAST
TOWARDS NEW YORK. LIMITED MOISTURE IS DIAGNOSED WITH THIS FEATURE
AND THUS HAVE ADJUSTED TO CHANCE POPS ON SATURDAY.

TEMPERATURES ARE TO REMAIN MOSTLY BELOW NORMAL THROUGH THE PERIOD.


&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
THE NEXT SYSTEM DEVELOPING ACROSS THE CENTRAL PLAINS WILL SLOWLY
DRIFT EAST. THE SYSTEM WILL BRING A CHANCE OF RAIN BY MONDAY
NIGHT...WITH SCATTERED SHOWERS AND BELOW NORMAL TEMPERATURES
CONTINUING THROUGH THE REST OF THE PERIOD.

&&

.AVIATION /17Z WEDNESDAY THROUGH SUNDAY/...
GRADUAL IMPROVEMENT TO VFR...AND WIND DIMINISHMENT CAN BE EXPECTED
INTO THE EVE AS HIGH PRES BLDS AND COLD ADVCTN EASES. VFR AND LGT
WIND WL CONT THROUGH THURSDAY.

.OUTLOOK.../THURSDAY NIGHT THROUGH SUNDAY/...
THE NXT CHC FOR GENL RESTRICTIONS WL COME WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$







000
FXUS61 KPBZ 231429
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
1029 AM EDT WED APR 23 2014

.SYNOPSIS...
A COOLER PATTERN FOR THE REST OF THE WEEK. THE NEXT CHANCE FOR
SHOWERS WILL ARRIVE FRIDAY WITH THE PASSAGE OF ANOTHER FRONT.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
THE SHORTWAVE TROUGH HAS MOVED EAST BUT DUE TO COLD NORTHWEST
FLOW...STRATOCU CONTINUES TO LINGER OVER THE REGION. HOWEVER...CLOUD
COVERAGE WILL BEGIN TO DECREASE BY THE AFTERNOON AS DRY AIR BEGINS
TO ENTRAIN ACROSS THE REGION WITH HIGH PRESSURE BUILDING FROM THE
WEST. TEMPERATURES WILL REMAIN WELL BELOW NORMAL DESPITE SUN
EXPOSURE.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY/...
DRY SURFACE HIGH WILL SWING THROUGH THE AREA TONIGHT AND THURSDAY.
AN OPTIMAL SETUP FOR RADIATIONAL COOLING TONIGHT ALLOWING FOR TEMPS
TO DROP WELL BELOW NORMAL.

TEMPS MODERATE THURSDAY WITH PLENTY OF SUNSHINE AND WEAK WAA.

FAST MOVING COOL FRONT WILL CROSS THE AREA LATE THURSDAY NIGHT AND
FRIDAY MORNING. SHOWERS WILL CROSS THE REGION WITH FRONTAL
PASSAGE. THE BOUNDARY IS ASSOCIATED WITH AN OCCLUDED SYSTEM WHICH
WILL SWING THROUGH THE UPPER GREAT LAKES ON FRIDAY. DUE TO THE
OVERALL STRUCTURE OF THE SYSTEM...THE AIR BEHIND THE FRONT IS NOT
MUCH COOLER THEN THE AIR MASS THAT WILL BE IN PLACE AHEAD OF IT.
THERE WILL BE A WIND SHIFT...BUT TEMPS WILL RECOVER NICELY FRIDAY
WITH PLENTY OF SUNSHINE IN THE AFTERNOON.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A SECONDARY FRONT WILL SWING THROUGH LATE FRIDAY NIGHT. THIS FRONT
WILL HAVE MUCH STRONGER CAA BEHIND IT. WILL INCLUDE CHANCE POPS
WITH THE PASSAGE OF THIS BOUNDARY FRIDAY NIGHT. WITH THE COLD FRONT
INTO EASTERN PENNSYLVANIA BY SATURDAY MORNING...SHOWERS SHOULD BE
ON THE DECLINE...ALTHOUGH WESTERLY FLOW WILL KEEP MOSTLY CLOUDY
SKIES AND ISOLATED SHOWERS THROUGH THE DAY. CLOUDS SHOULD THEN
DIMINISH SATURDAY NIGHT INTO SUNDAY. THE NEXT SYSTEM DEVELOPING
ACROSS THE CENTRAL PLAINS WILL SLOWLY DRIFT EAST. THE SYSTEM WILL
BRING A CHANCE OF RAIN BY MONDAY NIGHT...WITH SCATTERED SHOWERS
AND BELOW NORMAL TEMPERATURES CONTINUING THROUGH THE REST OF THE
PERIOD.

&&

.AVIATION /15Z WEDNESDAY THROUGH SUNDAY/...
STRATOCUMULUS WILL REMAIN THROUGH THE LATE MORNING...WITH PRIMARILY
MVFR CIGS. FKL SHOULD DROP TO IFR...WITH ZZV/MGW POSSIBLY REMAINING
VFR THROUGHOUT. CIGS SHOULD THEN SCATTER OUT THROUGH THE COURSE OF
THE DAY...WITH SKIES BECOMING CLEAR BY SUNSET. OCCASIONAL GUSTS TO
15-20 KT CAN BE EXPECTED OVERNIGHT THROUGH MID MORNING...WITH MOST
LOCATIONS SEEING WINDS GUST TO 20-25 KT THROUGH THE AFTERNOON. WINDS
WILL DROP BELOW 10 KTS BY THIS EVENING.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
VFR CONDITIONS WILL CONTINUE INTO EARLY FRIDAY...BEFORE BOUNDARY
WILL BRING RESTRICTIONS.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$








000
FXUS61 KPBZ 231429
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
1029 AM EDT WED APR 23 2014

.SYNOPSIS...
A COOLER PATTERN FOR THE REST OF THE WEEK. THE NEXT CHANCE FOR
SHOWERS WILL ARRIVE FRIDAY WITH THE PASSAGE OF ANOTHER FRONT.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
THE SHORTWAVE TROUGH HAS MOVED EAST BUT DUE TO COLD NORTHWEST
FLOW...STRATOCU CONTINUES TO LINGER OVER THE REGION. HOWEVER...CLOUD
COVERAGE WILL BEGIN TO DECREASE BY THE AFTERNOON AS DRY AIR BEGINS
TO ENTRAIN ACROSS THE REGION WITH HIGH PRESSURE BUILDING FROM THE
WEST. TEMPERATURES WILL REMAIN WELL BELOW NORMAL DESPITE SUN
EXPOSURE.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY/...
DRY SURFACE HIGH WILL SWING THROUGH THE AREA TONIGHT AND THURSDAY.
AN OPTIMAL SETUP FOR RADIATIONAL COOLING TONIGHT ALLOWING FOR TEMPS
TO DROP WELL BELOW NORMAL.

TEMPS MODERATE THURSDAY WITH PLENTY OF SUNSHINE AND WEAK WAA.

FAST MOVING COOL FRONT WILL CROSS THE AREA LATE THURSDAY NIGHT AND
FRIDAY MORNING. SHOWERS WILL CROSS THE REGION WITH FRONTAL
PASSAGE. THE BOUNDARY IS ASSOCIATED WITH AN OCCLUDED SYSTEM WHICH
WILL SWING THROUGH THE UPPER GREAT LAKES ON FRIDAY. DUE TO THE
OVERALL STRUCTURE OF THE SYSTEM...THE AIR BEHIND THE FRONT IS NOT
MUCH COOLER THEN THE AIR MASS THAT WILL BE IN PLACE AHEAD OF IT.
THERE WILL BE A WIND SHIFT...BUT TEMPS WILL RECOVER NICELY FRIDAY
WITH PLENTY OF SUNSHINE IN THE AFTERNOON.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A SECONDARY FRONT WILL SWING THROUGH LATE FRIDAY NIGHT. THIS FRONT
WILL HAVE MUCH STRONGER CAA BEHIND IT. WILL INCLUDE CHANCE POPS
WITH THE PASSAGE OF THIS BOUNDARY FRIDAY NIGHT. WITH THE COLD FRONT
INTO EASTERN PENNSYLVANIA BY SATURDAY MORNING...SHOWERS SHOULD BE
ON THE DECLINE...ALTHOUGH WESTERLY FLOW WILL KEEP MOSTLY CLOUDY
SKIES AND ISOLATED SHOWERS THROUGH THE DAY. CLOUDS SHOULD THEN
DIMINISH SATURDAY NIGHT INTO SUNDAY. THE NEXT SYSTEM DEVELOPING
ACROSS THE CENTRAL PLAINS WILL SLOWLY DRIFT EAST. THE SYSTEM WILL
BRING A CHANCE OF RAIN BY MONDAY NIGHT...WITH SCATTERED SHOWERS
AND BELOW NORMAL TEMPERATURES CONTINUING THROUGH THE REST OF THE
PERIOD.

&&

.AVIATION /15Z WEDNESDAY THROUGH SUNDAY/...
STRATOCUMULUS WILL REMAIN THROUGH THE LATE MORNING...WITH PRIMARILY
MVFR CIGS. FKL SHOULD DROP TO IFR...WITH ZZV/MGW POSSIBLY REMAINING
VFR THROUGHOUT. CIGS SHOULD THEN SCATTER OUT THROUGH THE COURSE OF
THE DAY...WITH SKIES BECOMING CLEAR BY SUNSET. OCCASIONAL GUSTS TO
15-20 KT CAN BE EXPECTED OVERNIGHT THROUGH MID MORNING...WITH MOST
LOCATIONS SEEING WINDS GUST TO 20-25 KT THROUGH THE AFTERNOON. WINDS
WILL DROP BELOW 10 KTS BY THIS EVENING.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
VFR CONDITIONS WILL CONTINUE INTO EARLY FRIDAY...BEFORE BOUNDARY
WILL BRING RESTRICTIONS.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$







000
FXUS61 KPBZ 231136
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
736 AM EDT WED APR 23 2014

.SYNOPSIS...
A COOLER PATTERN FOR THE REST OF THE WEEK. THE NEXT CHANCE FOR
SHOWERS WILL ARRIVE FRIDAY WITH THE PASSAGE OF ANOTHER FRONT.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
MINIMAL CHANGES WERE MADE TO THE POST DAWN UPDATE. THE SHORTWAVE
TROUGH HAS MOVED EAST OF THE AREA. CLOUDS WILL BEGIN TO DECREASE
BY THE AFTERNOON AS DRY AIR BEGINS TO ENTRAIN ACROSS THE REGION.
TEMPERATURES WILL REMAIN WELL BELOW NORMAL DESPITE SUN EXPOSURE.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY/...
DRY SURFACE HIGH WILL SWING THROUGH THE AREA TONIGHT AND THURSDAY.
AN OPTIMAL SETUP FOR RADIATIONAL COOLING TONIGHT ALLOWING FOR TEMPS
TO DROP WELL BELOW NORMAL.

TEMPS MODERATE THURSDAY WITH PLENTY OF SUNSHINE AND WEAK WAA.

FAST MOVING COOL FRONT WILL CROSS THE AREA LATE THURSDAY NIGHT AND
FRIDAY MORNING. SHOWERS WILL CROSS THE REGION WITH FRONTAL
PASSAGE. THE BOUNDARY IS ASSOCIATED WITH AN OCCLUDED SYSTEM WHICH
WILL SWING THROUGH THE UPPER GREAT LAKES ON FRIDAY. DUE TO THE
OVERALL STRUCTURE OF THE SYSTEM...THE AIR BEHIND THE FRONT IS NOT
MUCH COOLER THEN THE AIR MASS THAT WILL BE IN PLACE AHEAD OF IT.
THERE WILL BE A WIND SHIFT...BUT TEMPS WILL RECOVER NICELY FRIDAY
WITH PLENTY OF SUNSHINE IN THE AFTERNOON.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A SECONDARY FRONT WILL SWING THROUGH LATE FRIDAY NIGHT. THIS FRONT
WILL HAVE MUCH STRONGER CAA BEHIND IT. WILL INCLUDE CHANCE POPS
WITH THE PASSAGE OF THIS BOUNDARY FRIDAY NIGHT. WITH THE COLD FRONT
INTO EASTERN PENNSYLVANIA BY SATURDAY MORNING...SHOWERS SHOULD BE
ON THE DECLINE...ALTHOUGH WESTERLY FLOW WILL KEEP MOSTLY CLOUDY
SKIES AND ISOLATED SHOWERS THROUGH THE DAY. CLOUDS SHOULD THEN
DIMINISH SATURDAY NIGHT INTO SUNDAY. THE NEXT SYSTEM DEVELOPING
ACROSS THE CENTRAL PLAINS WILL SLOWLY DRIFT EAST. THE SYSTEM WILL
BRING A CHANCE OF RAIN BY MONDAY NIGHT...WITH SCATTERED SHOWERS
AND BELOW NORMAL TEMPERATURES CONTINUING THROUGH THE REST OF THE
PERIOD.

&&

.AVIATION /12Z WEDNESDAY THROUGH SUNDAY/...
STRATOCUMULUS WILL REMAIN THROUGH THE LATE MORNING...WITH PRIMARILY
MVFR CIGS. FKL SHOULD DROP TO IFR...WITH ZZV/MGW POSSIBLY REMAINING
VFR THROUGHOUT. CIGS SHOULD THEN SCATTER OUT THROUGH THE COURSE OF
THE DAY...WITH SKIES BECOMING CLEAR BY SUNSET. OCCASIONAL GUSTS TO
15-20 KT CAN BE EXPECTED OVERNIGHT THROUGH MID MORNING...WITH MOST
LOCATIONS SEEING WINDS GUST TO 20-25 KT THROUGH THE AFTERNOON. WINDS
WILL DROP BELOW 10 KTS BY THIS EVENING.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
VFR CONDITIONS WILL CONTINUE INTO EARLY FRIDAY...BEFORE BOUNDARY
WILL BRING RESTRICTIONS.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$








000
FXUS61 KPBZ 231136
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
736 AM EDT WED APR 23 2014

.SYNOPSIS...
A COOLER PATTERN FOR THE REST OF THE WEEK. THE NEXT CHANCE FOR
SHOWERS WILL ARRIVE FRIDAY WITH THE PASSAGE OF ANOTHER FRONT.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
MINIMAL CHANGES WERE MADE TO THE POST DAWN UPDATE. THE SHORTWAVE
TROUGH HAS MOVED EAST OF THE AREA. CLOUDS WILL BEGIN TO DECREASE
BY THE AFTERNOON AS DRY AIR BEGINS TO ENTRAIN ACROSS THE REGION.
TEMPERATURES WILL REMAIN WELL BELOW NORMAL DESPITE SUN EXPOSURE.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY/...
DRY SURFACE HIGH WILL SWING THROUGH THE AREA TONIGHT AND THURSDAY.
AN OPTIMAL SETUP FOR RADIATIONAL COOLING TONIGHT ALLOWING FOR TEMPS
TO DROP WELL BELOW NORMAL.

TEMPS MODERATE THURSDAY WITH PLENTY OF SUNSHINE AND WEAK WAA.

FAST MOVING COOL FRONT WILL CROSS THE AREA LATE THURSDAY NIGHT AND
FRIDAY MORNING. SHOWERS WILL CROSS THE REGION WITH FRONTAL
PASSAGE. THE BOUNDARY IS ASSOCIATED WITH AN OCCLUDED SYSTEM WHICH
WILL SWING THROUGH THE UPPER GREAT LAKES ON FRIDAY. DUE TO THE
OVERALL STRUCTURE OF THE SYSTEM...THE AIR BEHIND THE FRONT IS NOT
MUCH COOLER THEN THE AIR MASS THAT WILL BE IN PLACE AHEAD OF IT.
THERE WILL BE A WIND SHIFT...BUT TEMPS WILL RECOVER NICELY FRIDAY
WITH PLENTY OF SUNSHINE IN THE AFTERNOON.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A SECONDARY FRONT WILL SWING THROUGH LATE FRIDAY NIGHT. THIS FRONT
WILL HAVE MUCH STRONGER CAA BEHIND IT. WILL INCLUDE CHANCE POPS
WITH THE PASSAGE OF THIS BOUNDARY FRIDAY NIGHT. WITH THE COLD FRONT
INTO EASTERN PENNSYLVANIA BY SATURDAY MORNING...SHOWERS SHOULD BE
ON THE DECLINE...ALTHOUGH WESTERLY FLOW WILL KEEP MOSTLY CLOUDY
SKIES AND ISOLATED SHOWERS THROUGH THE DAY. CLOUDS SHOULD THEN
DIMINISH SATURDAY NIGHT INTO SUNDAY. THE NEXT SYSTEM DEVELOPING
ACROSS THE CENTRAL PLAINS WILL SLOWLY DRIFT EAST. THE SYSTEM WILL
BRING A CHANCE OF RAIN BY MONDAY NIGHT...WITH SCATTERED SHOWERS
AND BELOW NORMAL TEMPERATURES CONTINUING THROUGH THE REST OF THE
PERIOD.

&&

.AVIATION /12Z WEDNESDAY THROUGH SUNDAY/...
STRATOCUMULUS WILL REMAIN THROUGH THE LATE MORNING...WITH PRIMARILY
MVFR CIGS. FKL SHOULD DROP TO IFR...WITH ZZV/MGW POSSIBLY REMAINING
VFR THROUGHOUT. CIGS SHOULD THEN SCATTER OUT THROUGH THE COURSE OF
THE DAY...WITH SKIES BECOMING CLEAR BY SUNSET. OCCASIONAL GUSTS TO
15-20 KT CAN BE EXPECTED OVERNIGHT THROUGH MID MORNING...WITH MOST
LOCATIONS SEEING WINDS GUST TO 20-25 KT THROUGH THE AFTERNOON. WINDS
WILL DROP BELOW 10 KTS BY THIS EVENING.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
VFR CONDITIONS WILL CONTINUE INTO EARLY FRIDAY...BEFORE BOUNDARY
WILL BRING RESTRICTIONS.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$







000
FXUS61 KPBZ 230828
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
428 AM EDT WED APR 23 2014

.SYNOPSIS...
A COOLER PATTERN FOR THE REST OF THE WEEK. THE NEXT CHANCE FOR
SHOWERS WILL ARRIVE FRIDAY WITH THE PASSAGE OF ANOTHER FRONT.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
SHORTWAVE TROUGH QUICKLY SWINGS EAST OF THE AREA AFTER DAWN. THE
COLD POOL ALOFT WILL BEGIN TO SLOWLY RECEDE NORTHWARD LATER THIS
MORNING...EXITING INTO THE NORTHEAST BY LATE AFTERNOON. WITH THE
WAA ALOFT...CLOUDS WILL DECREASE FROM SOUTH TO NORTH THROUGHOUT
THE DAY. A RETURN OF SUN WILL HELP WITH THE TEMPS...BUT THEY WILL
STILL END UP BELOW NORMAL.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY/...
DRY SURFACE HIGH WILL SWING THROUGH THE AREA TONIGHT AND THURSDAY.
AN OPTIMAL SETUP FOR RADIATIONAL COOLING TONIGHT ALLOWING FOR TEMPS
TO DROP WELL BELOW NORMAL.

TEMPS MODERATE THURSDAY WITH PLENTY OF SUNSHINE AND WEAK WAA.

FAST MOVING COOL FRONT WILL CROSS THE AREA LATE THURSDAY NIGHT AND
FRIDAY MORNING. SHOWERS WILL CROSS THE REGION WITH FRONTAL
PASSAGE. THE BOUNDARY IS ASSOCIATED WITH AN OCCLUDED SYSTEM WHICH
WILL SWING THROUGH THE UPPER GREAT LAKES ON FRIDAY. DUE TO THE
OVERALL STRUCTURE OF THE SYSTEM...THE AIR BEHIND THE FRONT IS NOT
MUCH COOLER THEN THE AIR MASS THAT WILL BE IN PLACE AHEAD OF IT.
THERE WILL BE A WIND SHIFT...BUT TEMPS WILL RECOVER NICELY FRIDAY
WITH PLENTY OF SUNSHINE IN THE AFTERNOON.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A SECONDARY FRONT WILL SWING THROUGH LATE FRIDAY NIGHT. THIS FRONT
WILL HAVE MUCH STRONGER CAA BEHIND IT. WILL INCLUDE CHANCE POPS
WITH THE PASSAGE OF THIS BOUNDARY FRIDAY NIGHT. WITH THE COLD FRONT
INTO EASTERN PENNSYLVANIA BY SATURDAY MORNING...SHOWERS SHOULD BE
ON THE DECLINE...ALTHOUGH WESTERLY FLOW WILL KEEP MOSTLY CLOUDY
SKIES AND ISOLATED SHOWERS THROUGH THE DAY. CLOUDS SHOULD THEN
DIMINISH SATURDAY NIGHT INTO SUNDAY. THE NEXT SYSTEM DEVELOPING
ACROSS THE CENTRAL PLAINS WILL SLOWLY DRIFT EAST. THE SYSTEM WILL
BRING A CHANCE OF RAIN BY MONDAY NIGHT...WITH SCATTERED SHOWERS
AND BELOW NORMAL TEMPERATURES CONTINUING THROUGH THE REST OF THE
PERIOD.

&&

.AVIATION /09Z WEDNESDAY THROUGH SUNDAY/...
STRATOCUMULUS WILL REMAIN THROUGH THE LATE MORNING...WITH PRIMARILY
MVFR CIGS. FKL SHOULD DROP TO IFR...WITH ZZV/MGW POSSIBLY REMAINING
VFR THROUGHOUT. CIGS SHOULD THEN SCATTER OUT THROUGH THE COURSE OF
THE DAY...WITH SKIES BECOMING CLEAR BY SUNSET. OCCASIONAL GUSTS TO
15-20 KT CAN BE EXPECTED OVERNIGHT THROUGH MID MORNING...WITH MOST
LOCATIONS SEEING WINDS GUST TO 20-25 KT THROUGH THE AFTERNOON. WINDS
WILL DROP BELOW 10 KTS BY THIS EVENING.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
VFR CONDITIONS WILL CONTINUE INTO EARLY FRIDAY...BEFORE BOUNDARY
WILL BRING RESTRICTIONS.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$







000
FXUS61 KPBZ 230828
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
428 AM EDT WED APR 23 2014

.SYNOPSIS...
A COOLER PATTERN FOR THE REST OF THE WEEK. THE NEXT CHANCE FOR
SHOWERS WILL ARRIVE FRIDAY WITH THE PASSAGE OF ANOTHER FRONT.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
SHORTWAVE TROUGH QUICKLY SWINGS EAST OF THE AREA AFTER DAWN. THE
COLD POOL ALOFT WILL BEGIN TO SLOWLY RECEDE NORTHWARD LATER THIS
MORNING...EXITING INTO THE NORTHEAST BY LATE AFTERNOON. WITH THE
WAA ALOFT...CLOUDS WILL DECREASE FROM SOUTH TO NORTH THROUGHOUT
THE DAY. A RETURN OF SUN WILL HELP WITH THE TEMPS...BUT THEY WILL
STILL END UP BELOW NORMAL.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY/...
DRY SURFACE HIGH WILL SWING THROUGH THE AREA TONIGHT AND THURSDAY.
AN OPTIMAL SETUP FOR RADIATIONAL COOLING TONIGHT ALLOWING FOR TEMPS
TO DROP WELL BELOW NORMAL.

TEMPS MODERATE THURSDAY WITH PLENTY OF SUNSHINE AND WEAK WAA.

FAST MOVING COOL FRONT WILL CROSS THE AREA LATE THURSDAY NIGHT AND
FRIDAY MORNING. SHOWERS WILL CROSS THE REGION WITH FRONTAL
PASSAGE. THE BOUNDARY IS ASSOCIATED WITH AN OCCLUDED SYSTEM WHICH
WILL SWING THROUGH THE UPPER GREAT LAKES ON FRIDAY. DUE TO THE
OVERALL STRUCTURE OF THE SYSTEM...THE AIR BEHIND THE FRONT IS NOT
MUCH COOLER THEN THE AIR MASS THAT WILL BE IN PLACE AHEAD OF IT.
THERE WILL BE A WIND SHIFT...BUT TEMPS WILL RECOVER NICELY FRIDAY
WITH PLENTY OF SUNSHINE IN THE AFTERNOON.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A SECONDARY FRONT WILL SWING THROUGH LATE FRIDAY NIGHT. THIS FRONT
WILL HAVE MUCH STRONGER CAA BEHIND IT. WILL INCLUDE CHANCE POPS
WITH THE PASSAGE OF THIS BOUNDARY FRIDAY NIGHT. WITH THE COLD FRONT
INTO EASTERN PENNSYLVANIA BY SATURDAY MORNING...SHOWERS SHOULD BE
ON THE DECLINE...ALTHOUGH WESTERLY FLOW WILL KEEP MOSTLY CLOUDY
SKIES AND ISOLATED SHOWERS THROUGH THE DAY. CLOUDS SHOULD THEN
DIMINISH SATURDAY NIGHT INTO SUNDAY. THE NEXT SYSTEM DEVELOPING
ACROSS THE CENTRAL PLAINS WILL SLOWLY DRIFT EAST. THE SYSTEM WILL
BRING A CHANCE OF RAIN BY MONDAY NIGHT...WITH SCATTERED SHOWERS
AND BELOW NORMAL TEMPERATURES CONTINUING THROUGH THE REST OF THE
PERIOD.

&&

.AVIATION /09Z WEDNESDAY THROUGH SUNDAY/...
STRATOCUMULUS WILL REMAIN THROUGH THE LATE MORNING...WITH PRIMARILY
MVFR CIGS. FKL SHOULD DROP TO IFR...WITH ZZV/MGW POSSIBLY REMAINING
VFR THROUGHOUT. CIGS SHOULD THEN SCATTER OUT THROUGH THE COURSE OF
THE DAY...WITH SKIES BECOMING CLEAR BY SUNSET. OCCASIONAL GUSTS TO
15-20 KT CAN BE EXPECTED OVERNIGHT THROUGH MID MORNING...WITH MOST
LOCATIONS SEEING WINDS GUST TO 20-25 KT THROUGH THE AFTERNOON. WINDS
WILL DROP BELOW 10 KTS BY THIS EVENING.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
VFR CONDITIONS WILL CONTINUE INTO EARLY FRIDAY...BEFORE BOUNDARY
WILL BRING RESTRICTIONS.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$








000
FXUS61 KPBZ 230432 AAC
AFDPBZ

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PITTSBURGH PA
1232 AM EDT WED APR 23 2014

.SYNOPSIS...
A COOLER PATTERN FOR THE REST OF THE WEEK. THE NEXT CHANCE FOR
SHOWERS WILL ARRIVE FRIDAY WITH THE PASSAGE OF ANOTHER FRONT.

&&

.NEAR TERM /THROUGH TODAY/...
FOR OVERNIGHT...HAVE MADE SOME ADJUSTMENT TO POPS AND CLOUDS. THE
EXTENSION OF THE POPS WAS MADE USING THE PATH AND SPEED OF THE
STRONG SHORTWAVE TROUGH...WHICH WILL DIG THROUGH OVERNIGHT. AIR
ALOFT ASSOCIATED WITH THE TROUGH IS NOT PARTICULARLY COLD AND
USING THE LATEST CRITICAL THICKNESS...ALL PRECIP SHOULD REMAIN
LIQUID. TEMPS WERE UPDATED WITH THE LATEST LAMP NUMBERS.

SHORTWAVE TROUGH QUICKLY SWINGS EAST OF THE AREA AFTER DAWN. THE
COLD POOL ALOFT WILL BEGIN TO SLOWLY RECEDE NORTHWARD LATER THIS
MORNING...EXITING INTO THE NORTHEAST BY LATE AFTERNOON. WITH THE
WAA ALOFT...CLOUDS WILL DECREASE FROM SOUTH TO NORTH THROUGHOUT
THE DAY. A RETURN OF SUN WILL HELP WITH THE TEMPS...BUT THEY WILL
STILL END UP BELOW NORMAL.

&&

.SHORT TERM /TONIGHT THROUGH FRIDAY/...
DRY SURFACE HIGH WILL SWING THROUGH THE AREA TONIGHT AND THURSDAY.
AN OPTIMAL SETUP FOR RADIATIONAL COOLING TONIGHT ALLOWING FOR TEMPS
TO DROP WELL BELOW NORMAL.

TEMPS MODERATE THURSDAY WITH PLENTY OF SUNSHINE AND WEAK WAA.

FAST MOVING COOL FRONT WILL CROSS THE AREA LATE THURSDAY NIGHT AND
FRIDAY MORNING. SHOWERS WILL CROSS THE REGION WITH FRONTAL
PASSAGE. THE BOUNDARY IS ASSOCIATED WITH AN OCCLUDED SYSTEM WHICH
WILL SWING THROUGH THE UPPER GREAT LAKES ON FRIDAY. DUE TO THE
OVERALL STRUCTURE OF THE SYSTEM...THE AIR BEHIND THE FRONT IS NOT
MUCH COOLER THEN THE AIR MASS THAT WILL BE IN PLACE AHEAD OF IT.
THERE WILL BE A WIND SHIFT...BUT TEMPS WILL RECOVER NICELY FRIDAY
WITH PLENTY OF SUNSHINE IN THE AFTERNOON.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A SECONDARY FRONT WILL SWING THROUGH LATE FRIDAY NIGHT. THIS FRONT
WILL HAVE MUCH STRONGER CAA BEHIND IT. WILL INCLUDE CHANCE POPS
WITH THE PASSAGE OF THIS BOUNDARY FRIDAY NIGHT. CHANCE POPS
THROUGH SATURDAY IN THE COLDER AIR MASS. SUNDAY LOOKS TO BE MAINLY
DRY AND COOL. LARGE AND COMPLEX SYSTEM DEVELOPING IN THE CENTRAL
PLAINS EARLY NEXT WEEK WITH MODELS HAVING TIMING ISSUES. FOR NOW
WENT WITH A DRY DAY TO START THE WORK WEEK. TEMPERATURES GENERALLY
BELOW AVERAGE FOR THE PERIOD.

&&

.AVIATION /04Z WEDNESDAY THROUGH SUNDAY/...
SHOWERS HAVE CLEARED ALL TERMINALS TO THE EAST LEAVING MAINLY VFR
CONDITIONS IN THEIR WAKE WITH GUSTY NW WINDS. SOME ADDITIONAL COLD
ADVECTION STRATOCUMULUS ARE FORECAST TO MOVE OVER THE AREA
OVERNIGHT...HOWEVER THEY SHOULD QUICKLY MIX OUT ON
WEDNESDAY...YIELDING TO VFR CONDITIONS WITH OCCASIONALLY GUSTY
NORTHWEST WINDS STILL AFFECTING ALL TERMINALS. FRIES

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
VFR CONDITIONS WILL CONTINUE UNTIL AT LEAST FRIDAY.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$







000
FXUS61 KPBZ 230432 AAC
AFDPBZ

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PITTSBURGH PA
1232 AM EDT WED APR 23 2014

.SYNOPSIS...
A COOLER PATTERN FOR THE REST OF THE WEEK. THE NEXT CHANCE FOR
SHOWERS WILL ARRIVE FRIDAY WITH THE PASSAGE OF ANOTHER FRONT.

&&

.NEAR TERM /THROUGH TODAY/...
FOR OVERNIGHT...HAVE MADE SOME ADJUSTMENT TO POPS AND CLOUDS. THE
EXTENSION OF THE POPS WAS MADE USING THE PATH AND SPEED OF THE
STRONG SHORTWAVE TROUGH...WHICH WILL DIG THROUGH OVERNIGHT. AIR
ALOFT ASSOCIATED WITH THE TROUGH IS NOT PARTICULARLY COLD AND
USING THE LATEST CRITICAL THICKNESS...ALL PRECIP SHOULD REMAIN
LIQUID. TEMPS WERE UPDATED WITH THE LATEST LAMP NUMBERS.

SHORTWAVE TROUGH QUICKLY SWINGS EAST OF THE AREA AFTER DAWN. THE
COLD POOL ALOFT WILL BEGIN TO SLOWLY RECEDE NORTHWARD LATER THIS
MORNING...EXITING INTO THE NORTHEAST BY LATE AFTERNOON. WITH THE
WAA ALOFT...CLOUDS WILL DECREASE FROM SOUTH TO NORTH THROUGHOUT
THE DAY. A RETURN OF SUN WILL HELP WITH THE TEMPS...BUT THEY WILL
STILL END UP BELOW NORMAL.

&&

.SHORT TERM /TONIGHT THROUGH FRIDAY/...
DRY SURFACE HIGH WILL SWING THROUGH THE AREA TONIGHT AND THURSDAY.
AN OPTIMAL SETUP FOR RADIATIONAL COOLING TONIGHT ALLOWING FOR TEMPS
TO DROP WELL BELOW NORMAL.

TEMPS MODERATE THURSDAY WITH PLENTY OF SUNSHINE AND WEAK WAA.

FAST MOVING COOL FRONT WILL CROSS THE AREA LATE THURSDAY NIGHT AND
FRIDAY MORNING. SHOWERS WILL CROSS THE REGION WITH FRONTAL
PASSAGE. THE BOUNDARY IS ASSOCIATED WITH AN OCCLUDED SYSTEM WHICH
WILL SWING THROUGH THE UPPER GREAT LAKES ON FRIDAY. DUE TO THE
OVERALL STRUCTURE OF THE SYSTEM...THE AIR BEHIND THE FRONT IS NOT
MUCH COOLER THEN THE AIR MASS THAT WILL BE IN PLACE AHEAD OF IT.
THERE WILL BE A WIND SHIFT...BUT TEMPS WILL RECOVER NICELY FRIDAY
WITH PLENTY OF SUNSHINE IN THE AFTERNOON.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A SECONDARY FRONT WILL SWING THROUGH LATE FRIDAY NIGHT. THIS FRONT
WILL HAVE MUCH STRONGER CAA BEHIND IT. WILL INCLUDE CHANCE POPS
WITH THE PASSAGE OF THIS BOUNDARY FRIDAY NIGHT. CHANCE POPS
THROUGH SATURDAY IN THE COLDER AIR MASS. SUNDAY LOOKS TO BE MAINLY
DRY AND COOL. LARGE AND COMPLEX SYSTEM DEVELOPING IN THE CENTRAL
PLAINS EARLY NEXT WEEK WITH MODELS HAVING TIMING ISSUES. FOR NOW
WENT WITH A DRY DAY TO START THE WORK WEEK. TEMPERATURES GENERALLY
BELOW AVERAGE FOR THE PERIOD.

&&

.AVIATION /04Z WEDNESDAY THROUGH SUNDAY/...
SHOWERS HAVE CLEARED ALL TERMINALS TO THE EAST LEAVING MAINLY VFR
CONDITIONS IN THEIR WAKE WITH GUSTY NW WINDS. SOME ADDITIONAL COLD
ADVECTION STRATOCUMULUS ARE FORECAST TO MOVE OVER THE AREA
OVERNIGHT...HOWEVER THEY SHOULD QUICKLY MIX OUT ON
WEDNESDAY...YIELDING TO VFR CONDITIONS WITH OCCASIONALLY GUSTY
NORTHWEST WINDS STILL AFFECTING ALL TERMINALS. FRIES

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
VFR CONDITIONS WILL CONTINUE UNTIL AT LEAST FRIDAY.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$








000
FXUS61 KPBZ 230047
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
847 PM EDT TUE APR 22 2014

.SYNOPSIS...
COOLER TEMPERATURES WILL PERSIST THROUGH THURSDAY MORNING...BUT
WILL BE REINFORCED BY ANOTHER FRONT THIS WEEKEND.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
WITH THE COLD FRONT PUSHING OFF TO THE EAST...COLD AIR ADVECTION
WITH NORTHWEST FLOW WILL PERSIST THROUGH TONIGHT. STRATOCU DECK
WORKING SOUTH FROM NRN OHIO WILL STREAM INTO THE CWA TONIGHT
INCREASING CLOUD COVER. LLVL MOISTURE ASSOCIATED WITH THE UPPER
TROUGH WILL PROVIDE A CHANCE OF RAIN OR SNOW SHOWERS ACROSS THE
NORTH AND HIGHER TERRAIN TONIGHT AND WEDS MORNING. UPPER TROUGH
PULLS AWAY QUICKLY WEDS MIDDAY WITH CLEARING
SKIES...HOWEVER...MAX TEMPS WILL REMAIN BELOW AVERAGE.


&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH THURSDAY/...
TEMPERATURES WILL BE WELL BELOW NORMAL THROUGH THURSDAY MORNING
BEFORE REBOUNDING TO NEAR NORMAL TEMPERATURES AS WARM AIR ADVECTS
VIA SOUTHERLY FLOW LATE THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/...
NEXT COLD FRONT WILL ARRIVE EARLY FRIDAY AS AN UPPER LEVEL LOW
MOVES ACROSS THE GREAT LAKES TOWARD EASTERN CANADA OVER THE
WEEKEND. LIKELY POPS FRIDAY WITH FRONT AND CHANCE POPS SATURDAY IN
UNSTABLE COLD ADVECTION AS A REINFORCING BOUNDARY CROSSES THE
REGION. SUNDAY LOOKS TO BE MAINLY DRY AND COOL. LARGE AND COMPLEX
SYSTEM DEVELOPING IN THE CENTRAL PLAINS EARLY NEXT WEEK WITH
MODELS HAVING TIMING ISSUES. FOR NOW WENT WITH A DRY DAY TO START
THE WORK WEEK. TEMPERATURES GENERALLY BELOW AVERAGE FOR THE
PERIOD.

&&

.AVIATION /01Z WEDNESDAY THROUGH SUNDAY/...
SHOWERS HAVE CLEARED ALL TERMINALS TO THE EAST LEAVING MAINLY VFR
CONDITIONS IN THEIR WAKE WITH GUSTY NW WINDS. SOME ADDITIONAL COLD
ADVECTION STRATOCUMULUS ARE FORECAST TO MOVE OVER THE AREA
OVERNIGHT...HOWEVER THEY SHOULD QUICKLY MIX OUT ON
WEDNESDAY...YIELDING TO VFR CONDITIONS WITH OCCASIONALLY GUSTY
NORTHWEST WINDS STILL AFFECTING ALL TERMINALS. FRIES

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
VFR CONDITIONS WILL CONTINUE UNTIL AT LEAST FRIDAY.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$







000
FXUS61 KPBZ 230047
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
847 PM EDT TUE APR 22 2014

.SYNOPSIS...
COOLER TEMPERATURES WILL PERSIST THROUGH THURSDAY MORNING...BUT
WILL BE REINFORCED BY ANOTHER FRONT THIS WEEKEND.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
WITH THE COLD FRONT PUSHING OFF TO THE EAST...COLD AIR ADVECTION
WITH NORTHWEST FLOW WILL PERSIST THROUGH TONIGHT. STRATOCU DECK
WORKING SOUTH FROM NRN OHIO WILL STREAM INTO THE CWA TONIGHT
INCREASING CLOUD COVER. LLVL MOISTURE ASSOCIATED WITH THE UPPER
TROUGH WILL PROVIDE A CHANCE OF RAIN OR SNOW SHOWERS ACROSS THE
NORTH AND HIGHER TERRAIN TONIGHT AND WEDS MORNING. UPPER TROUGH
PULLS AWAY QUICKLY WEDS MIDDAY WITH CLEARING
SKIES...HOWEVER...MAX TEMPS WILL REMAIN BELOW AVERAGE.


&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH THURSDAY/...
TEMPERATURES WILL BE WELL BELOW NORMAL THROUGH THURSDAY MORNING
BEFORE REBOUNDING TO NEAR NORMAL TEMPERATURES AS WARM AIR ADVECTS
VIA SOUTHERLY FLOW LATE THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/...
NEXT COLD FRONT WILL ARRIVE EARLY FRIDAY AS AN UPPER LEVEL LOW
MOVES ACROSS THE GREAT LAKES TOWARD EASTERN CANADA OVER THE
WEEKEND. LIKELY POPS FRIDAY WITH FRONT AND CHANCE POPS SATURDAY IN
UNSTABLE COLD ADVECTION AS A REINFORCING BOUNDARY CROSSES THE
REGION. SUNDAY LOOKS TO BE MAINLY DRY AND COOL. LARGE AND COMPLEX
SYSTEM DEVELOPING IN THE CENTRAL PLAINS EARLY NEXT WEEK WITH
MODELS HAVING TIMING ISSUES. FOR NOW WENT WITH A DRY DAY TO START
THE WORK WEEK. TEMPERATURES GENERALLY BELOW AVERAGE FOR THE
PERIOD.

&&

.AVIATION /01Z WEDNESDAY THROUGH SUNDAY/...
SHOWERS HAVE CLEARED ALL TERMINALS TO THE EAST LEAVING MAINLY VFR
CONDITIONS IN THEIR WAKE WITH GUSTY NW WINDS. SOME ADDITIONAL COLD
ADVECTION STRATOCUMULUS ARE FORECAST TO MOVE OVER THE AREA
OVERNIGHT...HOWEVER THEY SHOULD QUICKLY MIX OUT ON
WEDNESDAY...YIELDING TO VFR CONDITIONS WITH OCCASIONALLY GUSTY
NORTHWEST WINDS STILL AFFECTING ALL TERMINALS. FRIES

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
VFR CONDITIONS WILL CONTINUE UNTIL AT LEAST FRIDAY.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$








000
FXUS61 KPBZ 221821
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
221 PM EDT TUE APR 22 2014

.SYNOPSIS...
SHOWERS WILL DECREASE THIS EVENING AS THE COLD FRONT PASSES.
THE COOLER TEMPERATURES WILL PERSIST THROUGH THURSDAY
MORNING...BUT WILL BE REINFORCED BY ANOTHER FRONT THIS WEEKEND.

&&

.NEAR TERM /THROUGH TONIGHT/...
A LINE OF SHOWERS WITH EMBEDDED THUNDERSTORMS HAS DEVELOPED
ACROSS THE NORTHERN COUNTIES DUE TO A DEEPENING THERMAL TROUGH
COUPLED WITH A JET AND MINUTE SURFACE BASED CAPE. THEREFORE HAVE
ADJUSTED POPS AND WEATHER TO INTRODUCE THUNDER FOR PARTS OF THE
REGION THROUGH EARLY EVENING.

COLD AIR ADVECTION WITH NORTHWEST FLOW WILL PERSIST THROUGH
TONIGHT. THUS...STRATOCU WILL PERSIST AND A GREATER CHANCE OF A
STRAY SHOWER OR SNOW SHOWER EXISTS TO THE NORTH AND OVER THE
HIGHER TERRAIN.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...
NORTHWEST FLOW WILL CONTINUE WEDNESDAY WITH STRATOCU DECREASING IN
THE AFTERNOON AS BUILDING HIGH PRESSURE BRINGS DRIER CONDITIONS.

TEMPERATURES WILL BE WELL BELOW NORMAL THROUGH THURSDAY MORNING
BEFORE REBOUNDING TO NEAR NORMAL TEMPERATURES AS WARM AIR ADVECTS
VIA SOUTHERLY FLOW LATE THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/...
NEXT COLD FRONT WILL ARRIVE EARLY FRIDAY AS AN UPPER LEVEL LOW
MOVES ACROSS THE GREAT LAKES TOWARD EASTERN CANADA OVER THE
WEEKEND. LIKELY POPS FRIDAY WITH FRONT AND CHANCE POPS SATURDAY IN
UNSTABLE COLD ADVECTION AS A REINFORCING BOUNDARY CROSSES THE
REGION. SUNDAY LOOKS TO BE MAINLY DRY AND COOL. LARGE AND COMPLEX
SYSTEM DEVELOPING IN THE CENTRAL PLAINS EARLY NEXT WEEK WITH
MODELS HAVING TIMING ISSUES. FOR NOW WENT WITH A DRY DAY TO START
THE WORK WEEK. TEMPERATURES GENERALLY BELOW AVERAGE FOR THE
PERIOD.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
SHWRS AND ISOLD TSTMS WL DIMINISH THIS EVE AS THE CDFNT COMPLETES
PASSAGE ACRS THE UPR OH REGION. MVFR STRATOCU ARE EXPECTED TO
PERSIST INTO THE NGT THOUGH WITH COLD ADVCTN VIA NW BNDRY LYR FLOW.

EXPECT IMPROVEMENT ON WEDNESDAY VIA SBSDNC AND DRY ADVCTN.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
THE NXT CHC FOR GENL RESTRICTIONS WL COME WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$

15/24






000
FXUS61 KPBZ 221821
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
221 PM EDT TUE APR 22 2014

.SYNOPSIS...
SHOWERS WILL DECREASE THIS EVENING AS THE COLD FRONT PASSES.
THE COOLER TEMPERATURES WILL PERSIST THROUGH THURSDAY
MORNING...BUT WILL BE REINFORCED BY ANOTHER FRONT THIS WEEKEND.

&&

.NEAR TERM /THROUGH TONIGHT/...
A LINE OF SHOWERS WITH EMBEDDED THUNDERSTORMS HAS DEVELOPED
ACROSS THE NORTHERN COUNTIES DUE TO A DEEPENING THERMAL TROUGH
COUPLED WITH A JET AND MINUTE SURFACE BASED CAPE. THEREFORE HAVE
ADJUSTED POPS AND WEATHER TO INTRODUCE THUNDER FOR PARTS OF THE
REGION THROUGH EARLY EVENING.

COLD AIR ADVECTION WITH NORTHWEST FLOW WILL PERSIST THROUGH
TONIGHT. THUS...STRATOCU WILL PERSIST AND A GREATER CHANCE OF A
STRAY SHOWER OR SNOW SHOWER EXISTS TO THE NORTH AND OVER THE
HIGHER TERRAIN.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...
NORTHWEST FLOW WILL CONTINUE WEDNESDAY WITH STRATOCU DECREASING IN
THE AFTERNOON AS BUILDING HIGH PRESSURE BRINGS DRIER CONDITIONS.

TEMPERATURES WILL BE WELL BELOW NORMAL THROUGH THURSDAY MORNING
BEFORE REBOUNDING TO NEAR NORMAL TEMPERATURES AS WARM AIR ADVECTS
VIA SOUTHERLY FLOW LATE THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/...
NEXT COLD FRONT WILL ARRIVE EARLY FRIDAY AS AN UPPER LEVEL LOW
MOVES ACROSS THE GREAT LAKES TOWARD EASTERN CANADA OVER THE
WEEKEND. LIKELY POPS FRIDAY WITH FRONT AND CHANCE POPS SATURDAY IN
UNSTABLE COLD ADVECTION AS A REINFORCING BOUNDARY CROSSES THE
REGION. SUNDAY LOOKS TO BE MAINLY DRY AND COOL. LARGE AND COMPLEX
SYSTEM DEVELOPING IN THE CENTRAL PLAINS EARLY NEXT WEEK WITH
MODELS HAVING TIMING ISSUES. FOR NOW WENT WITH A DRY DAY TO START
THE WORK WEEK. TEMPERATURES GENERALLY BELOW AVERAGE FOR THE
PERIOD.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
SHWRS AND ISOLD TSTMS WL DIMINISH THIS EVE AS THE CDFNT COMPLETES
PASSAGE ACRS THE UPR OH REGION. MVFR STRATOCU ARE EXPECTED TO
PERSIST INTO THE NGT THOUGH WITH COLD ADVCTN VIA NW BNDRY LYR FLOW.

EXPECT IMPROVEMENT ON WEDNESDAY VIA SBSDNC AND DRY ADVCTN.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
THE NXT CHC FOR GENL RESTRICTIONS WL COME WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$

15/24





000
FXUS61 KPBZ 221623
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
1223 PM EDT TUE APR 22 2014

.SYNOPSIS...
SHOWERS WILL DECREASE IN COVERAGE TODAY AS THE COLD FRONT PASSES.
MUCH COOLER THAN NORMAL TEMPERATURES ARE EXPECTED THROUGH THURSDAY MORNING.

&&

.NEAR TERM /THROUGH TONIGHT/...
A RELATIVELY STRONGER LINE OF SHOWERS WITH EMBEDDED ISOLATED
THUNDER HAS DEVELOPED ACROSS THE NORTHWEST COUNTIES DUE TO A DEEPENING
THERMAL TROUGH COUPLED WITH A JET AND MINUTE SURFACE BASED CAPE.
THEREFORE HAVE ADJUSTED POPS AND WEATHER TO INTRODUCE THUNDER FOR
PARTS OF THE REGION THROUGH EARLY EVENING.

COLD AIR ADVECTION WITH NORTHWEST FLOW WILL PERSIST THROUGH
TONIGHT. THUS...STRATOCU WILL PERSIST AND A GREATER CHANCE OF A
STRAY SHOWER OR SNOW SHOWER EXISTS TO THE NORTH AND OVER THE
HIGHER TERRAIN.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...
NORTHWEST FLOW WILL CONTINUE WEDNESDAY WITH STRATOCU DECREASING IN
THE AFTERNOON AS BUILDING HIGH PRESSURE BRINGS DRIER CONDITIONS.

TEMPERATURES WILL BE WELL BELOW NORMAL THROUGH THURSDAY MORNING
BEFORE REBOUNDING TO NEAR NORMAL TEMPERATURES AS WARM AIR ADVECTS
VIA SOUTHERLY FLOW LATE THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/...
NEXT COLD FRONT WILL ARRIVE EARLY FRIDAY AS AN UPPER LEVEL LOW
MOVES ACROSS THE GREAT LAKES TOWARD EASTERN CANADA OVER THE
WEEKEND. LIKELY POPS FRIDAY WITH FRONT AND CHANCE POPS SATURDAY IN
UNSTABLE COLD ADVECTION AS A REINFORCING BOUNDARY CROSSES THE
REGION. SUNDAY LOOKS TO BE MAINLY DRY AND COOL. LARGE AND COMPLEX
SYSTEM DEVELOPING IN THE CENTRAL PLAINS EARLY NEXT WEEK WITH
MODELS HAVING TIMING ISSUES. FOR NOW WENT WITH A DRY DAY TO START
THE WORK WEEK. TEMPERATURES GENERALLY BELOW AVERAGE FOR THE
PERIOD.

&&

.AVIATION /16Z TUESDAY THROUGH SATURDAY/...
MVFR CIGS AND RAIN SHOWERS WILL MOVE THROUGH THE AREA WITH TODAYS
COLD FRONT. SURFACE WINDS WILL INCREASE AND VEER TO THE NW WITH
GUSTS TO ARND 20KTS. FOLLOWING FRONTAL PASSAGE...MVFR STRATOCU
MAY PERSIST...ESPECIALLY AT FKL AND DUJ WELL INTO THE NGT.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
THE NXT CHC FOR GENL RESTRICTIONS WL COME WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$








000
FXUS61 KPBZ 221512
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
1112 AM EDT TUE APR 22 2014

.SYNOPSIS...
SHOWERS WILL DECREASE IN COVERAGE TODAY AS THE COLD FRONT PASSES.
MUCH COOLER THAN NORMAL TEMPERATURES ARE EXPECTED THROUGH THURSDAY MORNING.

&&

.NEAR TERM /THROUGH TONIGHT/...
MADE MINOR ADJUSTMENTS TO WEATHER ELEMENTS BASED ON LATEST
OBSERVATIONS AND RADAR IMAGERY AS COLD FRONT CROSSES THE REGION.

COLD AIR ADVECTION WITH NORTHWEST FLOW WILL PERSIST THROUGH
TONIGHT. THUS...STRATOCU WILL PERSIST AND A GREATER CHANCE OF A
STRAY SHOWER OR SNOW SHOWER EXISTS TO THE NORTH AND OVER THE
HIGHER TERRAIN.


&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...
NORTHWEST FLOW WILL CONTINUE WEDNESDAY WITH STRATOCU DECREASING IN
THE AFTERNOON AS BUILDING HIGH PRESSURE BRINGS DRIER CONDITIONS.

TEMPERATURES WILL BE WELL BELOW NORMAL THROUGH THURSDAY MORNING
BEFORE REBOUNDING TO NEAR NORMAL TEMPERATURES AS WARM AIR ADVECTS
VIA SOUTHERLY FLOW LATE THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
NEXT COLD FRONT WILL ARRIVE EARLY FRIDAY AS AN UPPER LEVEL LOW
MOVES ACROSS THE GREAT LAKES TOWARD EASTERN CANADA OVER THE
WEEKEND. LIKELY POPS FRIDAY WITH FRONT AND CHANCE POPS SATURDAY IN
UNSTABLE COLD ADVECTION AS A REINFORCING BOUNDARY CROSSES THE
REGION. SUNDAY LOOKS TO BE MAINLY DRY AND COOL. LARGE AND COMPLEX
SYSTEM DEVELOPING IN THE CENTRAL PLAINS EARLY NEXT WEEK WITH
MODELS HAVING TIMING ISSUES. FOR NOW WENT WITH A DRY DAY TO START
THE WORK WEEK. TEMPERATURES GENERALLY BELOW AVERAGE FOR THE
PERIOD.

&&

.AVIATION /15Z TUESDAY THROUGH SATURDAY/...
MVFR CIGS AND RAIN SHOWERS WILL MOVE THROUGH THE AREA WITH TODAYS
COLD FRONT. SURFACE WINDS WILL INCREASE AND VEER TO THE NW WITH
GUSTS TO ARND 20KTS. FOLLOWING FRONTAL PASSAGE...MVFR STRATOCU
MAY PERSIST...ESPECIALLY AT FKL AND DUJ WELL INTO THE NGT.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
THE NXT CHC FOR GENL RESTRICTIONS WL COME WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$








000
FXUS61 KPBZ 221512
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
1112 AM EDT TUE APR 22 2014

.SYNOPSIS...
SHOWERS WILL DECREASE IN COVERAGE TODAY AS THE COLD FRONT PASSES.
MUCH COOLER THAN NORMAL TEMPERATURES ARE EXPECTED THROUGH THURSDAY MORNING.

&&

.NEAR TERM /THROUGH TONIGHT/...
MADE MINOR ADJUSTMENTS TO WEATHER ELEMENTS BASED ON LATEST
OBSERVATIONS AND RADAR IMAGERY AS COLD FRONT CROSSES THE REGION.

COLD AIR ADVECTION WITH NORTHWEST FLOW WILL PERSIST THROUGH
TONIGHT. THUS...STRATOCU WILL PERSIST AND A GREATER CHANCE OF A
STRAY SHOWER OR SNOW SHOWER EXISTS TO THE NORTH AND OVER THE
HIGHER TERRAIN.


&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...
NORTHWEST FLOW WILL CONTINUE WEDNESDAY WITH STRATOCU DECREASING IN
THE AFTERNOON AS BUILDING HIGH PRESSURE BRINGS DRIER CONDITIONS.

TEMPERATURES WILL BE WELL BELOW NORMAL THROUGH THURSDAY MORNING
BEFORE REBOUNDING TO NEAR NORMAL TEMPERATURES AS WARM AIR ADVECTS
VIA SOUTHERLY FLOW LATE THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
NEXT COLD FRONT WILL ARRIVE EARLY FRIDAY AS AN UPPER LEVEL LOW
MOVES ACROSS THE GREAT LAKES TOWARD EASTERN CANADA OVER THE
WEEKEND. LIKELY POPS FRIDAY WITH FRONT AND CHANCE POPS SATURDAY IN
UNSTABLE COLD ADVECTION AS A REINFORCING BOUNDARY CROSSES THE
REGION. SUNDAY LOOKS TO BE MAINLY DRY AND COOL. LARGE AND COMPLEX
SYSTEM DEVELOPING IN THE CENTRAL PLAINS EARLY NEXT WEEK WITH
MODELS HAVING TIMING ISSUES. FOR NOW WENT WITH A DRY DAY TO START
THE WORK WEEK. TEMPERATURES GENERALLY BELOW AVERAGE FOR THE
PERIOD.

&&

.AVIATION /15Z TUESDAY THROUGH SATURDAY/...
MVFR CIGS AND RAIN SHOWERS WILL MOVE THROUGH THE AREA WITH TODAYS
COLD FRONT. SURFACE WINDS WILL INCREASE AND VEER TO THE NW WITH
GUSTS TO ARND 20KTS. FOLLOWING FRONTAL PASSAGE...MVFR STRATOCU
MAY PERSIST...ESPECIALLY AT FKL AND DUJ WELL INTO THE NGT.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
THE NXT CHC FOR GENL RESTRICTIONS WL COME WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$







000
FXUS61 KPBZ 221151
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
751 AM EDT TUE APR 22 2014

.SYNOPSIS...
SHOWERS WILL END WITH PASSAGE OF A COLD FRONT LATER TODAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
ADJUSTMENTS TO POPS AND TEMPS WERE COMPLETED FOR THE POST DAWN
UPDATE BASED ON THE LATEST OB...AND RADAR TRENDS.

FOLLOWING FRONTAL PASSAGE...COLD ADVCTN VIA NW FLOW WL MAINTAIN
STRATOCU AND POSSIBLY A STRAY SHWR INTO TNGT.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...
NORTHWEST FLOW WILL CONTINUE WEDNESDAY WITH STRATOCU AND MAYBE A
SHOWER ACROSS THE I-80 CORRIDOR AND THE RIDGES. BLDG HIGH WL CLEAR
THE SKY WEDNESDAY NIGHT WITH TEMPERATURES MORE THAN 10 DEGREES
BELOW AVERAGE. AS SURFACE HIGH EXITS THURSDAY TEMPERATURES WILL
RECOVER TO NEAR SEASONAL AVERAGES.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
NEXT COLD FRONT WILL ARRIVE EARLY FRIDAY AS AN UPPER LEVEL LOW
MOVES ACROSS THE GREAT LAKES TOWARD EASTERN CANADA OVER THE
WEEKEND. LIKELY POPS FRIDAY WITH FRONT AND CHANCE POPS SATURDAY IN
UNSTABLE COLD ADVECTION AS A REINFORCING BOUNDARY CROSSES THE
REGION. SUNDAY LOOKS TO BE MAINLY DRY AND COOL. LARGE AND COMPLEX
SYSTEM DEVELOPING IN THE CENTRAL PLAINS EARLY NEXT WEEK WITH
MODELS HAVING TIMING ISSUES. FOR NOW WENT WITH A DRY DAY TO START
THE WORK WEEK. TEMPERATURES GENERALLY BELOW AVERAGE FOR THE
PERIOD.

&&

.AVIATION /12Z TUESDAY THROUGH SATURDAY/...
MVFR CIGS AND RAIN SHOWERS WILL MOVE THROUGH THE AREA WITH TODAYS
COLD FRONT. SURFACE WINDS WILL INCREASE AND VEER TO THE NW WITH
GUSTS TO ARND 20KTS. FOLLOWING FRONTAL PASSAGE...MVFR STRATOCU
MAY PERSIST...ESPECIALLY AT FKL AND DUJ WELL INTO THE NGT.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
THE NXT CHC FOR GENL RESTRICTIONS WL COME WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$

15





000
FXUS61 KPBZ 221151
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
751 AM EDT TUE APR 22 2014

.SYNOPSIS...
SHOWERS WILL END WITH PASSAGE OF A COLD FRONT LATER TODAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
ADJUSTMENTS TO POPS AND TEMPS WERE COMPLETED FOR THE POST DAWN
UPDATE BASED ON THE LATEST OB...AND RADAR TRENDS.

FOLLOWING FRONTAL PASSAGE...COLD ADVCTN VIA NW FLOW WL MAINTAIN
STRATOCU AND POSSIBLY A STRAY SHWR INTO TNGT.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...
NORTHWEST FLOW WILL CONTINUE WEDNESDAY WITH STRATOCU AND MAYBE A
SHOWER ACROSS THE I-80 CORRIDOR AND THE RIDGES. BLDG HIGH WL CLEAR
THE SKY WEDNESDAY NIGHT WITH TEMPERATURES MORE THAN 10 DEGREES
BELOW AVERAGE. AS SURFACE HIGH EXITS THURSDAY TEMPERATURES WILL
RECOVER TO NEAR SEASONAL AVERAGES.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
NEXT COLD FRONT WILL ARRIVE EARLY FRIDAY AS AN UPPER LEVEL LOW
MOVES ACROSS THE GREAT LAKES TOWARD EASTERN CANADA OVER THE
WEEKEND. LIKELY POPS FRIDAY WITH FRONT AND CHANCE POPS SATURDAY IN
UNSTABLE COLD ADVECTION AS A REINFORCING BOUNDARY CROSSES THE
REGION. SUNDAY LOOKS TO BE MAINLY DRY AND COOL. LARGE AND COMPLEX
SYSTEM DEVELOPING IN THE CENTRAL PLAINS EARLY NEXT WEEK WITH
MODELS HAVING TIMING ISSUES. FOR NOW WENT WITH A DRY DAY TO START
THE WORK WEEK. TEMPERATURES GENERALLY BELOW AVERAGE FOR THE
PERIOD.

&&

.AVIATION /12Z TUESDAY THROUGH SATURDAY/...
MVFR CIGS AND RAIN SHOWERS WILL MOVE THROUGH THE AREA WITH TODAYS
COLD FRONT. SURFACE WINDS WILL INCREASE AND VEER TO THE NW WITH
GUSTS TO ARND 20KTS. FOLLOWING FRONTAL PASSAGE...MVFR STRATOCU
MAY PERSIST...ESPECIALLY AT FKL AND DUJ WELL INTO THE NGT.

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
THE NXT CHC FOR GENL RESTRICTIONS WL COME WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$

15






000
FXUS61 KPBZ 220746
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
346 AM EDT TUE APR 22 2014

.SYNOPSIS...
A COLD FRONT WILL BRING SHOWERS TODAY FOLLOWED BY COOL HIGH
PRESSURE FOR THE MIDDLE OF THE WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
WEAK WIND SHIFT WITH PRE-FRONTAL SURFACE TROUGH ACROSS OHIO WILL
MOVE EAST OVERNIGHT BUT WITH DRY LOW LEVELS TO START MOSTLY VIRGA
UNTIL TOWARD DAYBREAK. MAIN FRONT ACROSS NORTHERN INDIANA WITH
UPPER TROUGH WILL REACH REGION LATER THIS MORNING AND SWEEP ACROSS
REGION. LIKELY POPS AS SYSTEM TRANSITIONS EAST. KEPT A CHC FOR
THUNDER EAST OF PITTSBURGH TO THE RIDGES THIS AFTERNOON WHERE MAY
BE ENOUGH LOW LEVEL INSTABILITY FOR A RUMBLE OR TWO. MILD
TEMPERATURES THIS MORNING WILL DROP OFF BEHIND FRONT THIS
AFTERNOON. COLD ADVECTION ALONG WITH NORTHWEST FLOW WILL BRING LOW
CHANCE POPS FAR NORTH AND RIDGES TONIGHT. TEMPERATURES TONIGHT
WELL INTO THE 30S.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...
CONTINUED CHILLY NORTHWEST FLOW WILL CONTINUE WEDNESDAY WITH
INSTABILITY CLOUDS AND MAYBE A SPRINKLE OR TWO ACROSS I-80 AND THE
RIDGES. SURFACE RIDGE WILL CLEAR SKIES WEDNESDAY NIGHT WITH
TEMPERATURES MORE THAN 10 DEGREES BELOW AVERAGE. AS SURFACE HIGH
EXITS THURSDAY TEMPERATURES WILL RECOVER TO NEAR SEASONAL
AVERAGES.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
NEXT COLD FRONT WILL ARRIVE EARLY FRIDAY AS AN UPPER LEVEL LOW
MOVES ACROSS THE GREAT LAKES TOWARD EASTERN CANADA OVER THE
WEEKEND. LIKELY POPS FRIDAY WITH FRONT AND CHANCE POPS SATURDAY IN
UNSTABLE COLD ADVECTION AS A REINFORCING BOUNDARY CROSSES THE
REGION. SUNDAY LOOKS TO BE MAINLY DRY AND COOL. LARGE AND COMPLEX
SYSTEM DEVELOPING IN THE CENTRAL PLAINS EARLY NEXT WEEK WITH
MODELS HAVING TIMING ISSUES. FOR NOW WENT WITH A DRY DAY TO START
THE WORK WEEK. TEMPERATURES GENERALLY BELOW AVERAGE FOR THE
PERIOD.

&&

.AVIATION /08Z TUESDAY THROUGH SATURDAY/...
VFR CONDITIONS AND LIGHT WINDS FOR THE REMAINDER OF THE NIGHT.
CONDITIONS QUICKLY DETERIORATE...FROM WEST TO EAST...AS DAWN
APPROACHES. MVFR CIGS AND RAIN SHOWERS WILL MOVE THROUGH THE AREA
WITH THE PASSAGE OF A COLD FRONT. SURFACE WINDS WILL INCREASE AS
PRECIPITATION FALLS WITH SOUTHWEST WINDS GUSTING TO 20KTS. SHOWERS
CLEAR IN THE EARLY AFTERNOON AND CIGS LIFT TO VFR THE EXCEPTION WILL
BE AT FKL AND DUJ...WHERE MVFR CIGS LOOK TO HOLD ON. WINDS WILL
SHIFT TO THE NORTHWEST AND STRENGTHEN WITH GUSTS TO 30KTS POSSIBLE
INTO THE EVENING HOURS.

.OUTLOOK.../TONIGHT THROUGH SATURDAY/...
A PERIOD OF MVFR/IFR CIGS WITH THE CAA TONIGHT HOLDING THROUGH DAWN
WED. VFR WL QUICKLY RTN WITH HIGH PRES...BUT SHWRS AN RESTRICTION
POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$










000
FXUS61 KPBZ 220746
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
346 AM EDT TUE APR 22 2014

.SYNOPSIS...
A COLD FRONT WILL BRING SHOWERS TODAY FOLLOWED BY COOL HIGH
PRESSURE FOR THE MIDDLE OF THE WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
WEAK WIND SHIFT WITH PRE-FRONTAL SURFACE TROUGH ACROSS OHIO WILL
MOVE EAST OVERNIGHT BUT WITH DRY LOW LEVELS TO START MOSTLY VIRGA
UNTIL TOWARD DAYBREAK. MAIN FRONT ACROSS NORTHERN INDIANA WITH
UPPER TROUGH WILL REACH REGION LATER THIS MORNING AND SWEEP ACROSS
REGION. LIKELY POPS AS SYSTEM TRANSITIONS EAST. KEPT A CHC FOR
THUNDER EAST OF PITTSBURGH TO THE RIDGES THIS AFTERNOON WHERE MAY
BE ENOUGH LOW LEVEL INSTABILITY FOR A RUMBLE OR TWO. MILD
TEMPERATURES THIS MORNING WILL DROP OFF BEHIND FRONT THIS
AFTERNOON. COLD ADVECTION ALONG WITH NORTHWEST FLOW WILL BRING LOW
CHANCE POPS FAR NORTH AND RIDGES TONIGHT. TEMPERATURES TONIGHT
WELL INTO THE 30S.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...
CONTINUED CHILLY NORTHWEST FLOW WILL CONTINUE WEDNESDAY WITH
INSTABILITY CLOUDS AND MAYBE A SPRINKLE OR TWO ACROSS I-80 AND THE
RIDGES. SURFACE RIDGE WILL CLEAR SKIES WEDNESDAY NIGHT WITH
TEMPERATURES MORE THAN 10 DEGREES BELOW AVERAGE. AS SURFACE HIGH
EXITS THURSDAY TEMPERATURES WILL RECOVER TO NEAR SEASONAL
AVERAGES.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
NEXT COLD FRONT WILL ARRIVE EARLY FRIDAY AS AN UPPER LEVEL LOW
MOVES ACROSS THE GREAT LAKES TOWARD EASTERN CANADA OVER THE
WEEKEND. LIKELY POPS FRIDAY WITH FRONT AND CHANCE POPS SATURDAY IN
UNSTABLE COLD ADVECTION AS A REINFORCING BOUNDARY CROSSES THE
REGION. SUNDAY LOOKS TO BE MAINLY DRY AND COOL. LARGE AND COMPLEX
SYSTEM DEVELOPING IN THE CENTRAL PLAINS EARLY NEXT WEEK WITH
MODELS HAVING TIMING ISSUES. FOR NOW WENT WITH A DRY DAY TO START
THE WORK WEEK. TEMPERATURES GENERALLY BELOW AVERAGE FOR THE
PERIOD.

&&

.AVIATION /08Z TUESDAY THROUGH SATURDAY/...
VFR CONDITIONS AND LIGHT WINDS FOR THE REMAINDER OF THE NIGHT.
CONDITIONS QUICKLY DETERIORATE...FROM WEST TO EAST...AS DAWN
APPROACHES. MVFR CIGS AND RAIN SHOWERS WILL MOVE THROUGH THE AREA
WITH THE PASSAGE OF A COLD FRONT. SURFACE WINDS WILL INCREASE AS
PRECIPITATION FALLS WITH SOUTHWEST WINDS GUSTING TO 20KTS. SHOWERS
CLEAR IN THE EARLY AFTERNOON AND CIGS LIFT TO VFR THE EXCEPTION WILL
BE AT FKL AND DUJ...WHERE MVFR CIGS LOOK TO HOLD ON. WINDS WILL
SHIFT TO THE NORTHWEST AND STRENGTHEN WITH GUSTS TO 30KTS POSSIBLE
INTO THE EVENING HOURS.

.OUTLOOK.../TONIGHT THROUGH SATURDAY/...
A PERIOD OF MVFR/IFR CIGS WITH THE CAA TONIGHT HOLDING THROUGH DAWN
WED. VFR WL QUICKLY RTN WITH HIGH PRES...BUT SHWRS AN RESTRICTION
POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$









000
FXUS61 KPBZ 220506
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
106 AM EDT TUE APR 22 2014

.SYNOPSIS...
SHOWERS ARE LIKELY TO ACCOMPANY A TUESDAY COLD FRONT.

&&

.NEAR TERM /THROUGH TODAY/...
WEAK WIND SHIFT WITH PRE-FRONTAL SURFACE TROUGH ACROSS OHIO WILL
MOVE EAST OVERNIGHT BUT WITH DRY LOW LEVELS TO START MOSTLY VIRGA
UNTIL TOWARD DAYBREAK. MAIN FRONT WITH UPPER TROUGH WILL REACH
REGION AFTER SUNRISE WITH LIKELY POPS AS SYSTEM TRANSITIONS EAST.
KEPT A CHC FOR THUNDER EAST OF PITTSBURGH TO THE RIDGES THIS
AFTERNOON WHERE MAY BE ENOUGH LOW LEVEL INSTABILITY FOR A RUMBLE
OR TWO. TEMPERATURES IN LINE WITH LITTLE CHANGE OTHER THAN TIMING
OF FROPA.

&&

.SHORT TERM /TONIGHT THROUGH THURSDAY/...
COLD ADVCTN VIA NW FLOW SHOULD MAINTAIN STRATOCU CLDS AND POSSIBLY
A STRAY SHWR INTO EARLY TUESDAY NGT. BLDG HIGH PRES WL SUPPRESS
THOSE PARAMETERS LTR ON WEDNESDAY AND INTO THURSDAY.

POST FRONTAL TEMPS ARE FORECAST ABOUT 10 DEGREES UNDR THE AVGS...BUT
QUICK MODERATION BACK TWD THE SEASONAL NORMS IS EXPECTED ON THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
ANOTHER CDFNT IS TIMED FOR A FRIDAY APCH AND PASSAGE AS UPR LOW DVLPS
ACRS THE GREAT LAKES AND TWD ERN CANADA BY THE WEEKEND. LIKELY POPS
WERE THUS INCLUDED WITH THE FRONT...AND CHC POPS WERE MAINTAINED INTO
THE WEEKEND ALNG WITH COOL TEMPS.

&&

.AVIATION /05Z TUESDAY THROUGH SATURDAY/...
VFR CONDITIONS AND LIGHT WINDS FOR THE REMAINDER OF THE NIGHT.
CONDITIONS QUICKLY DETERIORATE...FROM WEST TO EAST...AS DAWN
APPROACHES. MVFR CIGS AND RAIN SHOWERS WILL MOVE THROUGH THE AREA
WITH THE PASSAGE OF A COLD FRONT. SURFACE WINDS WILL INCREASE AS
PRECIPITATION FALLS WITH SOUTHWEST WINDS GUSTING TO 20KTS. SHOWERS
CLEAR IN THE EARLY AFTERNOON AND CIGS LIFT TO VFR THE EXCEPTION WILL
BE AT FKL AND DUJ...WHERE MVFR CIGS LOOK TO HOLD ON. WINDS WILL
SHIFT TO THE NORTHWEST AND STRENGTHEN WITH GUSTS TO 30KTS POSSIBLE
INTO THE EVENING HOURS.

.OUTLOOK.../TONIGHT THROUGH SATURDAY/...
A PERIOD OF MVFR/IFR CIGS WITH THE CAA TONIGHT HOLDING THROUGH DAWN
WED. VFR WL QUICKLY RTN WITH HIGH PRES...BUT SHWRS AN RESTRICTION
POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$









000
FXUS61 KPBZ 220506
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
106 AM EDT TUE APR 22 2014

.SYNOPSIS...
SHOWERS ARE LIKELY TO ACCOMPANY A TUESDAY COLD FRONT.

&&

.NEAR TERM /THROUGH TODAY/...
WEAK WIND SHIFT WITH PRE-FRONTAL SURFACE TROUGH ACROSS OHIO WILL
MOVE EAST OVERNIGHT BUT WITH DRY LOW LEVELS TO START MOSTLY VIRGA
UNTIL TOWARD DAYBREAK. MAIN FRONT WITH UPPER TROUGH WILL REACH
REGION AFTER SUNRISE WITH LIKELY POPS AS SYSTEM TRANSITIONS EAST.
KEPT A CHC FOR THUNDER EAST OF PITTSBURGH TO THE RIDGES THIS
AFTERNOON WHERE MAY BE ENOUGH LOW LEVEL INSTABILITY FOR A RUMBLE
OR TWO. TEMPERATURES IN LINE WITH LITTLE CHANGE OTHER THAN TIMING
OF FROPA.

&&

.SHORT TERM /TONIGHT THROUGH THURSDAY/...
COLD ADVCTN VIA NW FLOW SHOULD MAINTAIN STRATOCU CLDS AND POSSIBLY
A STRAY SHWR INTO EARLY TUESDAY NGT. BLDG HIGH PRES WL SUPPRESS
THOSE PARAMETERS LTR ON WEDNESDAY AND INTO THURSDAY.

POST FRONTAL TEMPS ARE FORECAST ABOUT 10 DEGREES UNDR THE AVGS...BUT
QUICK MODERATION BACK TWD THE SEASONAL NORMS IS EXPECTED ON THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
ANOTHER CDFNT IS TIMED FOR A FRIDAY APCH AND PASSAGE AS UPR LOW DVLPS
ACRS THE GREAT LAKES AND TWD ERN CANADA BY THE WEEKEND. LIKELY POPS
WERE THUS INCLUDED WITH THE FRONT...AND CHC POPS WERE MAINTAINED INTO
THE WEEKEND ALNG WITH COOL TEMPS.

&&

.AVIATION /05Z TUESDAY THROUGH SATURDAY/...
VFR CONDITIONS AND LIGHT WINDS FOR THE REMAINDER OF THE NIGHT.
CONDITIONS QUICKLY DETERIORATE...FROM WEST TO EAST...AS DAWN
APPROACHES. MVFR CIGS AND RAIN SHOWERS WILL MOVE THROUGH THE AREA
WITH THE PASSAGE OF A COLD FRONT. SURFACE WINDS WILL INCREASE AS
PRECIPITATION FALLS WITH SOUTHWEST WINDS GUSTING TO 20KTS. SHOWERS
CLEAR IN THE EARLY AFTERNOON AND CIGS LIFT TO VFR THE EXCEPTION WILL
BE AT FKL AND DUJ...WHERE MVFR CIGS LOOK TO HOLD ON. WINDS WILL
SHIFT TO THE NORTHWEST AND STRENGTHEN WITH GUSTS TO 30KTS POSSIBLE
INTO THE EVENING HOURS.

.OUTLOOK.../TONIGHT THROUGH SATURDAY/...
A PERIOD OF MVFR/IFR CIGS WITH THE CAA TONIGHT HOLDING THROUGH DAWN
WED. VFR WL QUICKLY RTN WITH HIGH PRES...BUT SHWRS AN RESTRICTION
POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$








000
FXUS61 KPBZ 220146
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
946 PM EDT MON APR 21 2014

.SYNOPSIS...
SHOWERS ARE LIKELY TO ACCOMPANY A TUESDAY COLD FRONT.

&&

.NEAR TERM /THROUGH TUESDAY/...
UPPER LEVEL VORT MAX EVIDENT ON CURRENT IR SATELLITE IMAGERY OVER
IN WILL TRACK JUST NORTH TONIGHT AHEAD OF THE COLD FRONT. THIS
VORT IS RESPONSIBLE FOR GENERATING SOME LIGHT RAIN SHOWERS
CURRENTLY OVER IN/OH BORDER. DEW POINTS ARE ON THE RISE AS THE
DRY AIR THAT HAD BEEN IN PLACE OVER THE LAST SEVERAL DAYS ERODES
AWAY. PUSHED UP THE SURGE OF HIGHER DEW POINTS IN LINE WITH LATEST
LAMP GUIDANCE AND SPED UP THE ONSET OF POPS OVER WRN FLANKS WITH
THIS UPDATE. BULK OF THE RAIN WILL HOLD OF UNTIL TUES MORNING
HOWEVER...AS THE COLD FRONT WILL SLOWLY MOVE IN FROM ITS CURRENT
MIDWEST LOCATION. OVERALL...MOISTURE WILL BE LIMITED WITH THIS
SYSTEM...ULTIMATELY TOTALING A THIRD OF AN INCH OF RAIN OR LESS.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...
COLD ADVCTN VIA NW FLOW SHOULD MAINTAIN STRATOCU CLDS AND POSSIBLY
A STRAY SHWR INTO TUESDAY NGT. BLDG HIGH PRES WL SUPPRESS THOSE
PARAMETERS LTR ON WEDNESDAY AND INTO THURSDAY.

POST FRONTAL TEMPS ARE FORECAST ABOUT 10 DEGREES UNDR THE AVGS...BUT
QUICK MODERATION BACK TWD THE SEASONAL NORMS IS EXPECTED ON THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
ANOTHER CDFNT IS TIMED FOR A FRIDAY APCH AND PASSAGE AS UPR LOW DVLPS
ACRS THE GREAT LAKES AND TWD ERN CANADA BY THE WEEKEND. LIKELY POPS
WERE THUS INCLUDED WITH THE FRONT...AND CHC POPS WERE MAINTAINED INTO
THE WEEKEND ALNG WITH COOL TEMPS.

&&

.AVIATION /01Z TUESDAY THROUGH SATURDAY/...
VFR AND LGT S...TO SW WIND CAN BE EXPECTED THROUGH TNGT...BUT DETERIORATION
TO GENL MVFR SHOULD BE ANTICIPATED ON TUESDAY MRNG AS A CDFNT APCHS
HE UPR OH REGION. COLD ADVCTN IN THE WAKE OF THE BNDY WL MAINTAIN
STRATOCU...ISOLD SHWRS...AND RESTRICION POTENTIAL INTO TUE NGT...MAINLY
FOR PORT N AND E OF PIT.

.OUTLOOK.../TUESDAY NGT THROUGH FRIDAY/...
VFR WL QUICKLY RTN WITH MID WEEK HIGH PRES...BUT SHWRS AN RESTRICTION
POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$







000
FXUS61 KPBZ 220146
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
946 PM EDT MON APR 21 2014

.SYNOPSIS...
SHOWERS ARE LIKELY TO ACCOMPANY A TUESDAY COLD FRONT.

&&

.NEAR TERM /THROUGH TUESDAY/...
UPPER LEVEL VORT MAX EVIDENT ON CURRENT IR SATELLITE IMAGERY OVER
IN WILL TRACK JUST NORTH TONIGHT AHEAD OF THE COLD FRONT. THIS
VORT IS RESPONSIBLE FOR GENERATING SOME LIGHT RAIN SHOWERS
CURRENTLY OVER IN/OH BORDER. DEW POINTS ARE ON THE RISE AS THE
DRY AIR THAT HAD BEEN IN PLACE OVER THE LAST SEVERAL DAYS ERODES
AWAY. PUSHED UP THE SURGE OF HIGHER DEW POINTS IN LINE WITH LATEST
LAMP GUIDANCE AND SPED UP THE ONSET OF POPS OVER WRN FLANKS WITH
THIS UPDATE. BULK OF THE RAIN WILL HOLD OF UNTIL TUES MORNING
HOWEVER...AS THE COLD FRONT WILL SLOWLY MOVE IN FROM ITS CURRENT
MIDWEST LOCATION. OVERALL...MOISTURE WILL BE LIMITED WITH THIS
SYSTEM...ULTIMATELY TOTALING A THIRD OF AN INCH OF RAIN OR LESS.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...
COLD ADVCTN VIA NW FLOW SHOULD MAINTAIN STRATOCU CLDS AND POSSIBLY
A STRAY SHWR INTO TUESDAY NGT. BLDG HIGH PRES WL SUPPRESS THOSE
PARAMETERS LTR ON WEDNESDAY AND INTO THURSDAY.

POST FRONTAL TEMPS ARE FORECAST ABOUT 10 DEGREES UNDR THE AVGS...BUT
QUICK MODERATION BACK TWD THE SEASONAL NORMS IS EXPECTED ON THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
ANOTHER CDFNT IS TIMED FOR A FRIDAY APCH AND PASSAGE AS UPR LOW DVLPS
ACRS THE GREAT LAKES AND TWD ERN CANADA BY THE WEEKEND. LIKELY POPS
WERE THUS INCLUDED WITH THE FRONT...AND CHC POPS WERE MAINTAINED INTO
THE WEEKEND ALNG WITH COOL TEMPS.

&&

.AVIATION /01Z TUESDAY THROUGH SATURDAY/...
VFR AND LGT S...TO SW WIND CAN BE EXPECTED THROUGH TNGT...BUT DETERIORATION
TO GENL MVFR SHOULD BE ANTICIPATED ON TUESDAY MRNG AS A CDFNT APCHS
HE UPR OH REGION. COLD ADVCTN IN THE WAKE OF THE BNDY WL MAINTAIN
STRATOCU...ISOLD SHWRS...AND RESTRICION POTENTIAL INTO TUE NGT...MAINLY
FOR PORT N AND E OF PIT.

.OUTLOOK.../TUESDAY NGT THROUGH FRIDAY/...
VFR WL QUICKLY RTN WITH MID WEEK HIGH PRES...BUT SHWRS AN RESTRICTION
POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$








000
FXUS61 KPBZ 211836
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
236 PM EDT MON APR 21 2014

.SYNOPSIS...
SHOWERS ARE LIKELY TO ACCOMPANY A TUESDAY COLD FRONT.

&&

.NEAR TERM /THROUGH TUESDAY/...
CLDS WL BE ON THE INCRS TNGT AS AN UPR TROF...CDFNT APCH. LTD
...AND SHORT LIVED DYNAMICS ARE EXPECTED TO SPPRT A BOUT OF SHWRS
UNTIL AFTN. LATEST NAM CONTS TO INDICATE SOME WEAK INSTABILITY
AFTR DAYBREAK...THUS HAVE ADDED A SLIGHT THUNDER MENTION FOR THE
ERN HALF OF THE CNTY WRNG AREA FOR A CPL OF HOURS. QPF UNDR THIS
SCENARIO IS PROJECTED AT ONE TO TWO TENTHS OF AN INCH.

SHWRS WL DIMINISH DURING THE AFTN GIVEN CURRENT TIMING OF FRONT...AND
MID LVL TROF PROGRESSION. NR TERM TEMPS WERE FORECAST USING THE LATEST
LAMP GUIDANCE AND NAM TRENDS.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...
COLD ADVCTN VIA NW FLOW SHOULD MAINTAIN STRATOCU CLDS AND POSSIBLY
A STRAY SHWR INTO TUESDAY NGT. BLDG HIGH PRES WL SUPPRESS THOSE
PARAMETERS LTR ON WEDNESDAY AND INTO THURSDAY.

POST FRONTAL TEMPS ARE FORECAST ABOUT 10 DEGREES UNDR THE AVGS...BUT
QUICK MODERATION BACK TWD THE SEASONAL NORMS IS EXPECTED ON THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
ANOTHER CDFNT IS TIMED FOR A FRIDAY APCH AND PASSAGE AS UPR LOW DVLPS
ACRS THE GREAT LAKES AND TWD ERN CANADA BY THE WEEKEND. LIKELY POPS
WERE THUS INCLUDED WITH THE FRONT...AND CHC POPS WERE MAINTAINED INTO
THE WEEKEND ALNG WITH COOL TEMPS.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
VFR AND LGT S...TO SW WIND CAN BE EXPECTED THROUGH TNGT...BUT DETERIORATION
TO GENL MVFR SHOULD BE ANTICIPATED ON TUESDAY MRNG AS A CDFNT APCHS
HE UPR OH REGION. COLD ADVCTN IN THE WAKE OF THE BNDY WL MAINTAIN
STRATOCU...ISOLD SHWRS...AND RESTRICION POTENTIAL INTO TUE NGT...MAINLY
FOR PORT N AND E OF PIT.

.OUTLOOK.../TUESDAY NGT THROUGH FRIDAY/...
VFR WL QUICKLY RTN WITH MID WEEK HIGH PRES...BUT SHWRS AN RESTRICTION
POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$

15





000
FXUS61 KPBZ 211836
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
236 PM EDT MON APR 21 2014

.SYNOPSIS...
SHOWERS ARE LIKELY TO ACCOMPANY A TUESDAY COLD FRONT.

&&

.NEAR TERM /THROUGH TUESDAY/...
CLDS WL BE ON THE INCRS TNGT AS AN UPR TROF...CDFNT APCH. LTD
...AND SHORT LIVED DYNAMICS ARE EXPECTED TO SPPRT A BOUT OF SHWRS
UNTIL AFTN. LATEST NAM CONTS TO INDICATE SOME WEAK INSTABILITY
AFTR DAYBREAK...THUS HAVE ADDED A SLIGHT THUNDER MENTION FOR THE
ERN HALF OF THE CNTY WRNG AREA FOR A CPL OF HOURS. QPF UNDR THIS
SCENARIO IS PROJECTED AT ONE TO TWO TENTHS OF AN INCH.

SHWRS WL DIMINISH DURING THE AFTN GIVEN CURRENT TIMING OF FRONT...AND
MID LVL TROF PROGRESSION. NR TERM TEMPS WERE FORECAST USING THE LATEST
LAMP GUIDANCE AND NAM TRENDS.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...
COLD ADVCTN VIA NW FLOW SHOULD MAINTAIN STRATOCU CLDS AND POSSIBLY
A STRAY SHWR INTO TUESDAY NGT. BLDG HIGH PRES WL SUPPRESS THOSE
PARAMETERS LTR ON WEDNESDAY AND INTO THURSDAY.

POST FRONTAL TEMPS ARE FORECAST ABOUT 10 DEGREES UNDR THE AVGS...BUT
QUICK MODERATION BACK TWD THE SEASONAL NORMS IS EXPECTED ON THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
ANOTHER CDFNT IS TIMED FOR A FRIDAY APCH AND PASSAGE AS UPR LOW DVLPS
ACRS THE GREAT LAKES AND TWD ERN CANADA BY THE WEEKEND. LIKELY POPS
WERE THUS INCLUDED WITH THE FRONT...AND CHC POPS WERE MAINTAINED INTO
THE WEEKEND ALNG WITH COOL TEMPS.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
VFR AND LGT S...TO SW WIND CAN BE EXPECTED THROUGH TNGT...BUT DETERIORATION
TO GENL MVFR SHOULD BE ANTICIPATED ON TUESDAY MRNG AS A CDFNT APCHS
HE UPR OH REGION. COLD ADVCTN IN THE WAKE OF THE BNDY WL MAINTAIN
STRATOCU...ISOLD SHWRS...AND RESTRICION POTENTIAL INTO TUE NGT...MAINLY
FOR PORT N AND E OF PIT.

.OUTLOOK.../TUESDAY NGT THROUGH FRIDAY/...
VFR WL QUICKLY RTN WITH MID WEEK HIGH PRES...BUT SHWRS AN RESTRICTION
POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$

15






000
FXUS61 KPBZ 211620
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
1220 PM EDT MON APR 21 2014

.SYNOPSIS...
HIGH PRESSURE WILL MAINTAIN DRY AND WARM CONDTIONS TODAY...BUT
SHOWERS WILL ACCOMPANY A TUESDAY COLD FRONT.

&&

.NEAR TERM /THROUGH TUESDAY/...
NO MAJOR ALTERATIONS WERE NEEDED FOR THE EARLY AFTN UPDATE AS
INSOLATION AND LGT WIND SPPRT A TEMP INCRS WELL INTO THE 70S.

CLDS WL BE ON THE INCRS TNGT AS AN UPR TROF...CDFNT APCH. LTD...AND
SHORT LIVED DYNAMICS ARE EXPECTED TO SPPRT A BOUT OF SHWRS DURING
THE MRNG. LATEST NAM CONTS TO INDICATE SOME WEAK INSTABILITY AFTR
DAYBREAK...THUS HAVE ADDED A SLIGHT THUNDER MENTION FOR THE ERN
HALF OF THE CNTY WRNG AREA FOR A CPL OF HOURS. QPF UNDR THIS
SCENARIO IS PROJECTED AT A TENTH TO QUARTER INCH.

NR TERM TEMPS WERE FORECAST USING THE LATEST LAMP GUIDANCE.

&&

.SHORT TERM /TUESDAY THROUGH THURSDAY/...
TUESDAY SHWRS WL DIMINISH DURING THE AFTN GIVEN CURRENT TIMING OF
FRONT...AND MID LVL TROF PROGRESSION. WITH MRNG TIMING AND LACK
OF CONSISTENT LOW LEVEL INSTABILITY PROGNOSIS...HAVE MAINTAINED
SHWR WORDING ONLY.

COLD ADVCTN VIA NW FLOW SHOULD MAINTAIN STRATOCU CLDS AND POSSIBLY
A STRAY SHWR INTO TUESDAY NGT. BLDG HIGH PRES WL SUPPRESS THOSE
PARAMETERS LTR ON WEDNESDAY AND INTO THURSDAY.

POST FRONTAL TEMPS ARE FORECAST ABOUT 10 DEGREES UNDR THE AVGS...BUT
QUICK MODERATION BACK TO THE SEASONAL NORMS IS EXPECTED ON THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
ANOTHER CDFNT IS TIMED FOR A FRIDAY APCH AND PASSAGE AS UPR LOW
DVLPS ACRS THE GREAT LAKES AND TWD ERN CANADA BY THE WEEKEND.
LIKELY POPS WERE THUS INCLUDED WITH THE FRONT...AND CHC POPS WERE
MAINTAINED INTO THE WEEKEND ALNG WITH COOL TEMPS.

&&

.AVIATION /16Z MONDAY THROUGH FRIDAY/...
VFR AND LGT S...TO SW WIND CAN BE EXPECTED THROUGH TNGT...BUT
DETERIORATION TO GENL MVFR SHOULD BE ANTICIPATED ON TUESDAY MRNG
AS A CDFNT APCHS THE UPR OH REGION. COLD ADVCTN IN THE WAKE OF THE
BNDY WL MAINTAIN STRATOCU...ISOLD SHWRS...AND RESTRICION POTENTIAL
INTO TUE NGT.

.OUTLOOK.../TUESDAY NGT THROUGH FRIDAY/...
VFR WL QUICKLY RTN WITH MID WEEK HIGH PRES...BUT SHWRS AND
RESTRICTION POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$

15





000
FXUS61 KPBZ 211620
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
1220 PM EDT MON APR 21 2014

.SYNOPSIS...
HIGH PRESSURE WILL MAINTAIN DRY AND WARM CONDTIONS TODAY...BUT
SHOWERS WILL ACCOMPANY A TUESDAY COLD FRONT.

&&

.NEAR TERM /THROUGH TUESDAY/...
NO MAJOR ALTERATIONS WERE NEEDED FOR THE EARLY AFTN UPDATE AS
INSOLATION AND LGT WIND SPPRT A TEMP INCRS WELL INTO THE 70S.

CLDS WL BE ON THE INCRS TNGT AS AN UPR TROF...CDFNT APCH. LTD...AND
SHORT LIVED DYNAMICS ARE EXPECTED TO SPPRT A BOUT OF SHWRS DURING
THE MRNG. LATEST NAM CONTS TO INDICATE SOME WEAK INSTABILITY AFTR
DAYBREAK...THUS HAVE ADDED A SLIGHT THUNDER MENTION FOR THE ERN
HALF OF THE CNTY WRNG AREA FOR A CPL OF HOURS. QPF UNDR THIS
SCENARIO IS PROJECTED AT A TENTH TO QUARTER INCH.

NR TERM TEMPS WERE FORECAST USING THE LATEST LAMP GUIDANCE.

&&

.SHORT TERM /TUESDAY THROUGH THURSDAY/...
TUESDAY SHWRS WL DIMINISH DURING THE AFTN GIVEN CURRENT TIMING OF
FRONT...AND MID LVL TROF PROGRESSION. WITH MRNG TIMING AND LACK
OF CONSISTENT LOW LEVEL INSTABILITY PROGNOSIS...HAVE MAINTAINED
SHWR WORDING ONLY.

COLD ADVCTN VIA NW FLOW SHOULD MAINTAIN STRATOCU CLDS AND POSSIBLY
A STRAY SHWR INTO TUESDAY NGT. BLDG HIGH PRES WL SUPPRESS THOSE
PARAMETERS LTR ON WEDNESDAY AND INTO THURSDAY.

POST FRONTAL TEMPS ARE FORECAST ABOUT 10 DEGREES UNDR THE AVGS...BUT
QUICK MODERATION BACK TO THE SEASONAL NORMS IS EXPECTED ON THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
ANOTHER CDFNT IS TIMED FOR A FRIDAY APCH AND PASSAGE AS UPR LOW
DVLPS ACRS THE GREAT LAKES AND TWD ERN CANADA BY THE WEEKEND.
LIKELY POPS WERE THUS INCLUDED WITH THE FRONT...AND CHC POPS WERE
MAINTAINED INTO THE WEEKEND ALNG WITH COOL TEMPS.

&&

.AVIATION /16Z MONDAY THROUGH FRIDAY/...
VFR AND LGT S...TO SW WIND CAN BE EXPECTED THROUGH TNGT...BUT
DETERIORATION TO GENL MVFR SHOULD BE ANTICIPATED ON TUESDAY MRNG
AS A CDFNT APCHS THE UPR OH REGION. COLD ADVCTN IN THE WAKE OF THE
BNDY WL MAINTAIN STRATOCU...ISOLD SHWRS...AND RESTRICION POTENTIAL
INTO TUE NGT.

.OUTLOOK.../TUESDAY NGT THROUGH FRIDAY/...
VFR WL QUICKLY RTN WITH MID WEEK HIGH PRES...BUT SHWRS AND
RESTRICTION POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$

15






000
FXUS61 KPBZ 211327
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
927 AM EDT MON APR 21 2014

.SYNOPSIS...
HIGH PRESSURE WILL MAINTAIN DRY AND WARM CONDTIONS TODAY...BUT
SHOWERS WILL ACCOMPANY A TUESDAY COLD FRONT.

&&

.NEAR TERM /THROUGH TONIGHT/...
NO MAJOR ALTERATIONS WERE NEEDED FOR THE LATE MRNG UPDATE.

CLDS WL BE ON THE INCRS TNGT AS AN UPR TROF...CDFNT APCH.
LTD...AND SHORT LIVED DYNAMICS ARE EXPECTED TO SPPRT A BRIEF BOUT
OF SHWRS DURING THE MRNG. QPF UNDR THIS SCENARIO IS PROJECTED AT A
TENTH TO QUARTER INCH.

NR TERM TEMPS WITH INSOLATION IN WARM ADVCTN IN ADVN OF FRONT WERE
FORECAST ABOUT 10 DEGREES ABOVE THE AVGS USING PERSISTENCE.

&&

.SHORT TERM /TUESDAY THROUGH THURSDAY/...
TUESDAY SHWRS WL DIMINISH DURING THE AFTN GIVEN CURRENT TIMING OF
FRONT...AND MID LVL TROF PROGRESSION. WITH MRNG TIMING AND LACK
OF CONSISTENT LOW LEVEL INSTABILITY PROGNOSIS...HAVE MAINTAINED
SHWR WORDING ONLY.

COLD ADVCTN VIA NW FLOW SHOULD MAINTAIN STRATOCU CLDS AND POSSIBLY
A STRAY SHWR INTO TUESDAY NGT. BLDG HIGH PRES WL SUPPRESS THOSE
PARAMETERS LTR ON WEDNESDAY AND INTO THURSDAY.

POST FRONTAL TEMPS ARE FORECAST ABOUT 10 DEGREES UNDR THE
AVGS...BUT QUICKL MODERATION BACK TO THE SEASONAL NORMS IS
EXPECTED ON THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/...
ANOTHER CDFNT IS TIMED FOR A FRIDAY APCH AND PASSAGE AS UPR LOW
DVLPS ACRS THE GREAT LAKES AND TWD ERN CANADA BY THE WEEKEND.
LIKELY POPS WERE THUS INCLUDED WITH THE FRONT...AND CHC POPS WERE
MAINTAINED INTO THE WEEKEND ALNG WITH COOL TEMPS.

&&

.AVIATION /13Z MONDAY THROUGH FRIDAY/...
VFR AND LGT S...TO SW WIND CAN BE EXPECTED THROUGH TNGT...BUT
DETERIORATION SHOULD BE ANTICIPATED ON TUESDAY MRNG AS A CDFNT
APCHS THE UPR OH REGION. COLD ADVCTN IN THE WAKE OF THE BNDY WL
MAINTAIN STRATOCU...ISOLD SHWRS...AND RESTRICION POTENTIAL INTO TUE NGT.

.OUTLOOK.../TUESDAY NGT THROUGH FRIDAY/...
VFR WL QUICKLY RTN WITH MID WEEK HIGH PRES...BUT SHWRS AND
RESTRICTION POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$

15






000
FXUS61 KPBZ 211327
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
927 AM EDT MON APR 21 2014

.SYNOPSIS...
HIGH PRESSURE WILL MAINTAIN DRY AND WARM CONDTIONS TODAY...BUT
SHOWERS WILL ACCOMPANY A TUESDAY COLD FRONT.

&&

.NEAR TERM /THROUGH TONIGHT/...
NO MAJOR ALTERATIONS WERE NEEDED FOR THE LATE MRNG UPDATE.

CLDS WL BE ON THE INCRS TNGT AS AN UPR TROF...CDFNT APCH.
LTD...AND SHORT LIVED DYNAMICS ARE EXPECTED TO SPPRT A BRIEF BOUT
OF SHWRS DURING THE MRNG. QPF UNDR THIS SCENARIO IS PROJECTED AT A
TENTH TO QUARTER INCH.

NR TERM TEMPS WITH INSOLATION IN WARM ADVCTN IN ADVN OF FRONT WERE
FORECAST ABOUT 10 DEGREES ABOVE THE AVGS USING PERSISTENCE.

&&

.SHORT TERM /TUESDAY THROUGH THURSDAY/...
TUESDAY SHWRS WL DIMINISH DURING THE AFTN GIVEN CURRENT TIMING OF
FRONT...AND MID LVL TROF PROGRESSION. WITH MRNG TIMING AND LACK
OF CONSISTENT LOW LEVEL INSTABILITY PROGNOSIS...HAVE MAINTAINED
SHWR WORDING ONLY.

COLD ADVCTN VIA NW FLOW SHOULD MAINTAIN STRATOCU CLDS AND POSSIBLY
A STRAY SHWR INTO TUESDAY NGT. BLDG HIGH PRES WL SUPPRESS THOSE
PARAMETERS LTR ON WEDNESDAY AND INTO THURSDAY.

POST FRONTAL TEMPS ARE FORECAST ABOUT 10 DEGREES UNDR THE
AVGS...BUT QUICKL MODERATION BACK TO THE SEASONAL NORMS IS
EXPECTED ON THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/...
ANOTHER CDFNT IS TIMED FOR A FRIDAY APCH AND PASSAGE AS UPR LOW
DVLPS ACRS THE GREAT LAKES AND TWD ERN CANADA BY THE WEEKEND.
LIKELY POPS WERE THUS INCLUDED WITH THE FRONT...AND CHC POPS WERE
MAINTAINED INTO THE WEEKEND ALNG WITH COOL TEMPS.

&&

.AVIATION /13Z MONDAY THROUGH FRIDAY/...
VFR AND LGT S...TO SW WIND CAN BE EXPECTED THROUGH TNGT...BUT
DETERIORATION SHOULD BE ANTICIPATED ON TUESDAY MRNG AS A CDFNT
APCHS THE UPR OH REGION. COLD ADVCTN IN THE WAKE OF THE BNDY WL
MAINTAIN STRATOCU...ISOLD SHWRS...AND RESTRICION POTENTIAL INTO TUE NGT.

.OUTLOOK.../TUESDAY NGT THROUGH FRIDAY/...
VFR WL QUICKLY RTN WITH MID WEEK HIGH PRES...BUT SHWRS AND
RESTRICTION POTENTIAL ARE ANTICIPATED WITH A FRIDAY CDFNT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$

15





000
FXUS61 KPBZ 210701
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
301 AM EDT MON APR 21 2014

.SYNOPSIS...
HIGH PRESSURE WILL DOMINATE TODAY WITH WARM AND DRY CONDITIONS. A
COLD FRONT BRINGS SHOWERS LATER TONIGHT AND TUESDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
SUNSHINE WITH A FEW HIGH CLOUDS TODAY AS HIGH PRESSURE SHIFTS
EAST. TEMPERATURES WILL WARM WELL INTO THE 70S. CLOUDS WILL
QUICKLY INCREASE TONIGHT AS AN UPPER TROUGH APPROACHES WITH AN
ASSOCIATED COLD FRONT. SHOWERS WILL INCREASE AFTER MIDNIGHT FROM
WEST TO EAST AS MOISTURE INCREASES AHEAD OF THE FRONT. CLOUDS AND
WARM ADVECTION AHEAD OF THE SYSTEM WILL KEEP TEMPERATURES IN THE
50S OVERNIGHT.

&&

.SHORT TERM /TUESDAY THROUGH THURSDAY/...
COLD FRONT WILL BE CROSSING THE REGION TUESDAY WITH SHOWERS
ESPECIALLY IN THE MORNING DIMINISHING IN THE AFTERNOON AS THE
UPPER TROUGH AND FRONT CROSS THE RIDGES. WITH EARLY TIMING OF THE
FRONT AND LACK OF LOW LEVEL INSTABILITY CONTINUED TO KEEP MENTION
OF THUNDER OUT OF THE FORECAST.

NORTHWEST FLOW AND COLD ADVECTION WILL KEEP CLOUDS AND A STRAY
SHOWER INTO TUESDAY NIGHT. COOL WITH PARTIAL SUNSHINE WEDNESDAY AS
SURFACE RIDGE BEGINS TO BUILD ACROSS REGION...CLEARING SKIES FOR
WEDNESDAY NIGHT WITH TEMPERATURES WELL INTO THE 30S...WITH UPPER
20S POSSIBLE IN THE RIDGES AND THE I-80 CORRIDOR. AS SURFACE
RIDGE SHIFTS EAST TEMPERATURES WILL REBOUND TOWARD SEASONAL
AVERAGES THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/...
A COLD FRONT WILL APPROACH AND CROSS THE REGION FRIDAY AS AN UPPER
LEVEL CLOSED LOW SLOWLY WORKS EAST FROM THE GREAT LAKES INTO
EASTERN CANADA THROUGH THE WEEKEND. SCATTERED SHOWERS FRIDAY
FOLLOWED BY COOL AND UNSETTLED WEATHER FOR THE WEEKEND.

&&

.AVIATION /07Z MONDAY THROUGH FRIDAY/...
VFR CONDITIONS THROUGH THE FORECAST PERIOD.

.OUTLOOK.../MONDAY THROUGH FRIDAY/...
THE NXT CHC FOR RESTRICTIONS IS EXPECTED TUESDAY WITH THE PASSAGE OF
A COLD FRONT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$











000
FXUS61 KPBZ 210701
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
301 AM EDT MON APR 21 2014

.SYNOPSIS...
HIGH PRESSURE WILL DOMINATE TODAY WITH WARM AND DRY CONDITIONS. A
COLD FRONT BRINGS SHOWERS LATER TONIGHT AND TUESDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
SUNSHINE WITH A FEW HIGH CLOUDS TODAY AS HIGH PRESSURE SHIFTS
EAST. TEMPERATURES WILL WARM WELL INTO THE 70S. CLOUDS WILL
QUICKLY INCREASE TONIGHT AS AN UPPER TROUGH APPROACHES WITH AN
ASSOCIATED COLD FRONT. SHOWERS WILL INCREASE AFTER MIDNIGHT FROM
WEST TO EAST AS MOISTURE INCREASES AHEAD OF THE FRONT. CLOUDS AND
WARM ADVECTION AHEAD OF THE SYSTEM WILL KEEP TEMPERATURES IN THE
50S OVERNIGHT.

&&

.SHORT TERM /TUESDAY THROUGH THURSDAY/...
COLD FRONT WILL BE CROSSING THE REGION TUESDAY WITH SHOWERS
ESPECIALLY IN THE MORNING DIMINISHING IN THE AFTERNOON AS THE
UPPER TROUGH AND FRONT CROSS THE RIDGES. WITH EARLY TIMING OF THE
FRONT AND LACK OF LOW LEVEL INSTABILITY CONTINUED TO KEEP MENTION
OF THUNDER OUT OF THE FORECAST.

NORTHWEST FLOW AND COLD ADVECTION WILL KEEP CLOUDS AND A STRAY
SHOWER INTO TUESDAY NIGHT. COOL WITH PARTIAL SUNSHINE WEDNESDAY AS
SURFACE RIDGE BEGINS TO BUILD ACROSS REGION...CLEARING SKIES FOR
WEDNESDAY NIGHT WITH TEMPERATURES WELL INTO THE 30S...WITH UPPER
20S POSSIBLE IN THE RIDGES AND THE I-80 CORRIDOR. AS SURFACE
RIDGE SHIFTS EAST TEMPERATURES WILL REBOUND TOWARD SEASONAL
AVERAGES THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/...
A COLD FRONT WILL APPROACH AND CROSS THE REGION FRIDAY AS AN UPPER
LEVEL CLOSED LOW SLOWLY WORKS EAST FROM THE GREAT LAKES INTO
EASTERN CANADA THROUGH THE WEEKEND. SCATTERED SHOWERS FRIDAY
FOLLOWED BY COOL AND UNSETTLED WEATHER FOR THE WEEKEND.

&&

.AVIATION /07Z MONDAY THROUGH FRIDAY/...
VFR CONDITIONS THROUGH THE FORECAST PERIOD.

.OUTLOOK.../MONDAY THROUGH FRIDAY/...
THE NXT CHC FOR RESTRICTIONS IS EXPECTED TUESDAY WITH THE PASSAGE OF
A COLD FRONT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$










000
FXUS61 KPBZ 210502
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
102 AM EDT MON APR 21 2014

.SYNOPSIS...
HIGH PRESSURE WILL DOMINATE TODAY WITH WARM AND DRY CONDITIONS. A
COLD FRONT BRINGS SHOWERS LATER MONDAY NIGHT AND TUESDAY.

&&

.NEAR TERM /THROUGH TODAY/...
LATEST SATELLITE IMAGERY CONTINUES TO SHOW SOME CIRRUS STREAMING ACROSS
THE REGION. DRY OVERNIGHT WITH TEMPERATURES DROPPING TO NEAR
NORMALS. ANOTHER MOSTLY SUNNY DAY TO START THE WORK WEEK WITH
TEMPERATURES NEAR WHERE THEY WERE SUNDAY.

&&

.SHORT TERM /TONIGHT THROUGH THURSDAY/...
THE APPROACH OF A SHORTWAVE TROUGH FROM THE WESTERN GREAT LAKES
WILL INCREASE CLOUD COVERAGE MONDAY EVENING AND BRING THE NEXT
CHANCE OF SHOWERS ASSOCIATED WITH A SURFACE COLD FRONT LATER
MONDAY NIGHT INTO TUESDAY EVENING. INSUFFICIENT INSTABILITY IS
DIAGNOSED AT THIS TIME AND THEREFORE HAVE CONTINUED TO LEAVE OUT
THUNDER IN THE PERIOD.

NORTHWEST FLOW IS PROGGED TO KEEP CLOUDS COVERING MUCH OF THE
REGION WEDNESDAY BEFORE HIGH PRESSURE BEGINS TO CLEAR OUT CLOUDS
THE LATTER HALF OF THE DAY.

THE COLD FRONT WILL LOWER TEMPERATURES TO WELL BELOW AVERAGE
NUMBERS TUESDAY NIGHT THROUGH WEDNESDAY NIGHT. AS SURFACE RIDGE
SHIFTS EAST TEMPERATURES WILL REBOUND TOWARD SEASONAL AVERAGES THURSDAY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/...
A COLD FRONT WILL APPROACH LATER THURSDAY NIGHT AND CROSS THE
REGION FRIDAY AS UPPER LEVEL CLOSED LOW SLOWLY WORKS EAST FROM THE
GREAT LAKES INTO EASTERN CANADA NEXT WEEKEND. SCATTERED SHOWERS
FRIDAY FOLLOWED BY COOL AND UNSETTLED WEATHER FOR THE WEEKEND.

&&

.AVIATION /06Z MONDAY THROUGH FRIDAY/...
VFR CONDITIONS THROUGH THE FORECAST PERIOD.

.OUTLOOK.../MONDAY THROUGH FRIDAY/...
THE NXT CHC FOR RESTRICTIONS IS EXPECTED TUESDAY WITH THE PASSAGE OF
A COLD FRONT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$









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