Area Forecast Discussion
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000 FXUS61 KPBZ 261820 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 120 PM EST WED NOV 26 2014 .SYNOPSIS... SNOW WILL END WEST TO EAST THIS AFTERNOON AS THE COASTAL LOW MOVES OFF TO THE NORTHEAST. A SECOND...WEAKER SYSTEM WILL USHER IN COLDER TEMPERATURES AND LINGERING SNOW SHOWER CHANCES THROUGH THE END OF THE WEEK. && .NEAR TERM /THROUGH TONIGHT/... LITTLE TO UPDATE THIS AFTERNOON AS THE FORECAST REMAINS ON TRACK. MOISTURE ASSOCIATED WITH THE COASTAL LOW WILL QUICKLY SHIFT EASTWARD THROUGH THE REST OF THE AFTERNOON...WITH SNOW EXPECTED TO END AT PITTSBURGH WITHIN THE HOUR. AN ADDITIONAL INCH OR SO WILL BE POSSIBLE FURTHER EAST BEFORE SNOW FINALLY ENDS BY SUNSET. WILL LEAVE ALL ADVISORIES AND WARNINGS AS IS AT THIS TIME. THE LARGE SCALE TROUGH WILL PIVOT OVER THE REGION TONIGHT. WHILE COLD ADVECTION/NW FLOW WILL BE ONGOING...THERE WILL BE LITTLE MOISTURE IN THE LOW LEVELS TO SUPPORT SNOW SHOWERS. WILL MAINTAIN A DRY FORECAST TONIGHT WITH LOW TEMPERATURES FORECAST NEAR MET VALUES. && .SHORT TERM /THURSDAY THROUGH SATURDAY/... SHORTWAVE TROUGH WILL SWING THROUGH LATE THURSDAY...INCREASING LARGE SCALE ASCENSION AND BRINGING ANOTHER SHOT OF COLDER AIR THURSDAY NIGHT. WINDS ALOFT WILL INCREASE IN SPEED AND BECOME WEST-NORTHWESTERLY. THE SNOW GROWTH ZONE BEGINS TO LOWER AND LAKE ERIE WILL COME INTO PLAY. WILL BRING POPS BACK IN ACROSS THE NORTH AND RIDGES THURSDAY AFTERNOON. CAA CONTINUES THURSDAY NIGHT BEHIND EXITING SHORTWAVE TROUGH. FOR A TIME...WINDS ALOFT LOOK GOOD FOR LAKE INFLUENCES AND THE SNOW GROWTH ZONE WILL DROP INTO AN AREA OF HIGHER SATURATION. EXPECT AN INCREASE IN SNOW SHOWER COVERAGE THURSDAY NIGHT...WITH THE NORTH AND RIDGES THE MOST LIKELY LOCATIONS FOR ACCUMULATING SNOW. SURFACE HIGH WILL BUILD IN ON FRIDAY AND THE ENTIRE ATMOSPHERE WILL DRY OUT DURING THE MORNING HOURS. COULD SEE SOME LINGERING FLURRIES ACROSS THE NORTH AND RIDGES FRIDAY MORNING...BUT THESE TOO WILL END AS SUBSIDENCE AND THE DRIER AIR TAKES OVER. A COLD DAY FRIDAY WITH TEMPS WELL BELOW SEASONABLE LEVELS. && .LONG TERM /SATURDAY NIGHT THROUGH TUESDAY/... MODELS COMING INTO GOOD AGREEMENT WITH ANOTHER WARM UP FOR THE WEEKEND. MODELS ARE STILL TRYING TO FIGURE OUT HOW MUCH PRECIP WILL DEVELOP SATURDAY NIGHT AND SUNDAY WITH PASSING WAVES IN THE ZONAL FLOW ALOFT. EXPECT MOST OF SATURDAY NIGHT TO BE DRY WITH A SHOWER POSSIBLE BY SUNDAY MORNING. LOOKING LIKE A BETTER CHANCE FOR SHOWERS SUNDAY...PARTICULARLY IN THE AFTERNOON...AHEAD OF AN APPROACHING COLD FRONT. AREA WILL DRY OUT MONDAY WITH ANOTHER COOL DOWN ON TUESDAY. && .AVIATION /18Z WEDNESDAY THROUGH MONDAY/... IFR TO CONTINUE AT MOST PA AND WV AIRPORTS THROUGH THIS AFTERNOON. OHIO AIRPORTS MOSTLY VFR. SNOW SHOULD BE ENDING RAPIDLY AND VISIBILITIES SHOULD IMPROVE TO MVFR/VFR IN PA AND WV. CEILINGS FORECAST TO REMAIN IFR INTO THE EARLY EVENING HOURS THEN IMPROVE TO MVFR AS SLIGHTLY DRIER AIR MOVE IN AS SYSTEM PASSES AND WINDS SHIFT MORE NORTHWEST OUTLOOK.../WEDNESDAY NIGHT THROUGH SUNDAY/... NON VFR DEVELOPING THURSDAY IN -SHSN...LINGERING ACROSS NW PA INTO FRIDAY. NON-VFR SUNDAY IN -SHRA WITH THE NEXT FRONT. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...WINTER STORM WARNING UNTIL 6 PM EST THIS EVENING FOR MDZ001. OH...NONE. PA...WINTER STORM WARNING UNTIL 6 PM EST THIS EVENING FOR PAZ074- 076. WINTER WEATHER ADVISORY UNTIL 6 PM EST THIS EVENING FOR PAZ023- 073-075. WV...WINTER STORM WARNING UNTIL 6 PM EST THIS EVENING FOR WVZ023- 041. WINTER WEATHER ADVISORY UNTIL 6 PM EST THIS EVENING FOR WVZ021- 022. && $$

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