Area Forecast Discussion
Issued by NWS

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000
FXUS61 KPBZ 211600
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
1100 AM EST FRI NOV 21 2014

.SYNOPSIS...
COLD HIGH PRESSURE WILL BUILD IN TODAY. WIDESPREAD SHOWER CHANCES
RETURN WITH SUNDAY EVENING LOW PRESSURE.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
HIGH PRES WL BLD IN BEHIND AN EXITING SHRTWV TDA. TERRAIN ENHANCED
FLURRIES N AND E OF PIT SHOULD DCRS THIS AFTN...THOUGH CU RULE
INDICATES COLD AIR CU/SC WL CONT THRU MUCH OF THE DAY. MRNG RAOBS
SPPRT HIGH TEMPS RANGING FM THE LWR TO UPR 20S ACRS THE RGN.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY/...
BIG CHANGE IN THE OVERALL PATTERN THIS WEEKEND AS STRONG WAA GETS
CRANKING ON SATURDAY AND CONTINUES THROUGH THE WEEKEND. SHOWERS
COULD DEVELOP SATURDAY AFTERNOON ACROSS THE NORTHERN HALF OF THE
AREA ALONG A PASSING WARM FRONT. MOST OF THE UPPER LEVEL SUPPORT
AND DEEP MOISTURE WILL BE ACROSS THE NORTH...SO WILL PLACE THE
HIGHEST POPS THERE. NOTICEABLY WARMER TEMPS ON SATURDAY.

A SERIES OF WAVES WILL MOVE THROUGH SATURDAY NIGHT AND
SUNDAY...KEEPING IN THE RISK FOR SCATTERED SHOWERS THROUGH THE
PERIOD.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
WIDESPREAD SHOWERS WILL QUICKLY MOVE SUNDAY NIGHT. WARM PATTERN
WILL CONTINUE THROUGH EARLY TUESDAY...WHEN THE NEXT FRONT WILL
BRING COLDER AIR TO THE REGION FOR THE REMAINDER OF THE LONG TERM.

&&

.AVIATION /16Z FRIDAY THROUGH TUESDAY/...
LIGHT SNOW SHOWERS NORTH OF PITTSBURGH MAY RESULT IN ANOTHER BRIEF
PERIOD OF MVFR CIGS AT FKL AND DUJ...BUT THE WINDOW OF
OPPORTUNITY FOR THAT WILL BE GONE BY EARLY AFTERNOON AS HIGH
PRESSURE BUILDS IN OVER THE AREA AND VFR CONDITIONS PREVAIL.

OUTLOOK.../FRIDAY THROUGH TUESDAY /...
VFR CONDITIONS THROUGH SATURDAY. POSSIBLE MVFR TO IFR CONDITIONS
SUNDAY NIGHT INTO MONDAY AS THE NEXT STORM SYSTEM APPROACHES.

&&

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

&&

$$





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