Area Forecast Discussion
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000 FXUS61 KPBZ 210919 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 419 AM EST FRI NOV 21 2014 .SYNOPSIS...
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ANOTHER VERY COLD DAY...BUT IMPROVEMENT IN TEMPERATURES CAN BE EXPECTED THIS WEEKEND.
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&& .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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SHORTWAVE WILL QUICKLY EXIT TO THE EAST THIS MORNING AND HIGH PRESSURE WILL MOVE INTO WESTERN OHIO. THE HEART OF THE COLD AIR WILL REST OVER WESTERN PA INTO EARLY AFTERNOON...BEFORE MODERATING AND THEN DRIFTING NORTHEASTWARD. SNOW SHOWER ACTIVITY THIS MORNING WILL BE CONFINED MAINLY TO THE FAR NORTH AND RIDGES. WITH SUNSHINE...CLOUDS WILL QUICKLY FILL IN...BUT BEGIN TO DECAY FROM THE SOUTHWEST AS THE COLDER AIR SLOWLY EXITS. ANOTHER VERY COLD DAY ON TAP.
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&& .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 /09Z FRIDAY THROUGH TUESDAY/... OCCASIONAL MVFR CONDITIONS WILL BE POSSIBLE OVERNIGHT PRIMARILY NORTH OF PITTSBURGH IN LIGHT SNOW SHOWERS AS A UPPER LEVEL TROUGH TRANSITIONS ACROSS THE REGION THE REMAINDER OF THE NIGHT. HIGH PRESSURE WILL BUILD IN DURING THE DAY AND RESULT IN VFR CONDITIONS. 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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