Area Forecast Discussion
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000 FXUS61 KPBZ 250540 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 1240 AM EST SUN JAN 25 2015 .SYNOPSIS...
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CROSSING LOW PRESSURE WILL BRING WIDESPREAD SNOW SUNDAY THROUGH MONDAY.
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&& .NEAR TERM /UNTIL 6 AM THIS MORNING/...
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FRZG DRIZZLE HAS ENDED AND ADVY HAS BEEN CANCELLED. A CROSSING SHRTWV ACRS THE ERN GT LKS WL KEEP SN CHCS ACRS THE AREA TNGT WITH LTL ACCUM. NR STEADY TEMPS EXPD USING LATEST LAMP NMBRS.
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&& .SHORT TERM /6 AM THIS MORNING THROUGH 6 PM MONDAY/... A TROUGH OF LOW PRESSURE DIVING SOUTH ACROSS THE MIDWESTERN STATES ON SUNDAY WITH THE MID LEVEL LOW CENTER PROGGED TO BE OVER KENTUCKY BY SUNDAY EVENING BEFORE SHIFTING TO THE EAST THEN UP THE COAST AS A STRONG COASTAL LOW DEVELOPS OFF THE CAROLINA COAST. THE CURRENT TRACK PLACES THE MAJORITY OF THE FORECAST AREA IN A FAVORABLE LOCATION FOR MODERATE SNOW SHOWERS TO DEVELOP SUNDAY AFTERNOON THROUGH MONDAY MORNING. MODELS ARE IN FAIRLY GOOD AGREEMENT AT THIS POINT AND BASED ON THE LATEST MEAN SNOWFALL ACCUMULATION PROGS HAVE OPTED TO ISSUE A WINTER WEATHER ADVISORY MAINLY FOR AREAS ALONG AND SOUTH OF INTERSTATE 80.,,,WHERE BETWEEN 3 AND 5 INCHES OF SNOW LOOK LIKELY. && .LONG TERM /MONDAY NIGHT THROUGH SATURDAY/... AFTER THE CLIPPER HAS MOVED TO THE EAST...ANOTHER SURFACE LOW WILL DIVE TO THE SOUTH FROM CANADA INTO THE OHIO VALLEY. ALTHOUGH THE SURFACE LOW WILL FILL AS IT MOVES TO THE SOUTH...THE ASSOCIATED SHORTWAVE COULD STILL END UP DRIVING ANOTHER ROUND OF PRECIPITATION. THE BULK OF THIS ENERGY REMAINS JUST TO THE WEST OF THE FORECAST AREA...SO HAVE ONLY MADE MINIMAL CHANGES TO THE FORECAST WITH THIS FEATURE. ONLY OTHER SYSTEM OF SIGNIFICANCE IS A CLIPPER MOVING ACROSS THE OHIO VALLEY THURSDAY INTO EARLY FRIDAY. POPS WERE RAISED AND SPED UP A BIT FOR THIS SYSTEM BASED ON 00Z ECMWF AND GFS. OTHERWISE WPC GRIDS CLOSELY FOLLOWED. UPPER LEVEL TROUGH OVER THE EASTERN U.S. WILL KEEP TEMPERATURES BELOW AVERAGE INTO NEXT WEEKEND. && .AVIATION /06Z SUNDAY THROUGH THURSDAY/... IFR/LOW MVFR TO START THE PERIOD...BECOMING IFR AREAWIDE WITH TIME AS A WAVE MOVES THROUGH TONIGHT WITH SHSN. IFR CIGS REMAIN AS SHSN SCATTER OUT BRIEFLY SUNDAY MORNING. THEN NEXT...MORE POTENT SYSTEM WILL BRING STEADIER SNOW AND IFR/OCCASIONAL LIFR CONDITIONS AFTER 18Z. FKL/DUJ MAY ESCAPE THE WORST OF THIS SYSTEM BUT WILL STILL REMAIN IFR. .OUTLOOK.../SUNDAY THROUGH THURSDAY/... CROSSING LOW PRES WILL ALLOW IFR/LIFR CONDITIONS TO CONTINUE SUNDAY NIGHT AND MONDAY...WITH RESTRICTIONS POSSIBLE TUESDAY. ANOTHER SYSTEM COULD BRING RESTRICTIONS BY THURSDAY AFTERNOON. && .PBZ WATCHES/WARNINGS/ADVISORIES...
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MD...WINTER WEATHER ADVISORY FROM 1 PM THIS AFTERNOON TO 1 PM EST MONDAY FOR MDZ001. OH...WINTER WEATHER ADVISORY FROM 1 PM THIS AFTERNOON TO 1 PM EST MONDAY FOR OHZ039>041-048>050-057>059-068-069. PA...WINTER WEATHER ADVISORY FROM 1 PM THIS AFTERNOON TO 1 PM EST MONDAY FOR PAZ014-020>023-029-031-073>076. WV...WINTER WEATHER ADVISORY FROM 1 PM THIS AFTERNOON TO 1 PM EST MONDAY FOR WVZ001>004-012-021>023-041.
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&& $$

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