Area Forecast Discussion
Issued by NWS State College, PA

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000 FXUS61 KCTP 281445 AFDCTP AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 945 AM EST WED JAN 28 2015 .SYNOPSIS...
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HIGH PRESSURE WILL BUILD OVER THE REGION TODAY...FOLLOWED BY AN ALBERTA CLIPPER WHICH WILL CROSS THE AREA THURSDAY AND THURSDAY NIGHT. HIGH PRESSURE WILL RETURN FOR LATE FRIDAY INTO SATURDAY. A NEW STORM MAY BRING A ROUND OF WINTRY WEATHER FOR LATER SUNDAY INTO MONDAY...BEFORE ANOTHER SURGE OF COLD AIR WORKS INTO THE AREA EARLY NEXT WEEK.
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&& .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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LOW CLOUDS OVER SWRN AREAS WILL CONTINUE TO DWINDLE AND MIX OUT LEAVING ALL AREAS SUNNY BY AFTERNOON. HIGH PRESSURE WILL BUILD EAST FROM THE OHIO VALLEY TODAY...PROVIDING ABUNDANT SUNSHINE. VERTICAL MIXING UP TO JUST 2 KFT AGL WILL LEAD TO A NORTHWESTERLY BREEZE OF 8-13KT...WITH GUSTS INTO THE MID AND UPPER TEENS ACROSS THE REGION NEAR AND TO THE EAST OF THE SUSQ MAINSTEM. DESPITE THE SUN...TEMPS WILL REMAIN WELL BELOW SEASONAL NORMS...IN PART DUE TO FRESH SNOW COVER. GEFS MEAN 925TEMPS SUPPORT HIGHS ONLY IN THE 20S. A RELAXING PRES GRADIENT WILL RESULT IN A RELATIVELY LIGHT NW WIND BY LATER IN THE DAY.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH 6 AM THURSDAY/... HIGH PRESSURE AND ASSOC LOW PWAT AIR MASS WILL DRIFT OVERHEAD THIS EVENING. SOUTH-SSERLY SFC FLOW AND ANOMALOUSLY STG SWRLY FLOW ALOFT DEVELOPS EARLY THURSDAY IN ADVANCE OF A FAIRLY POTENT CLIPPER HEADED OUR WAY FROM THE WRN GLAKES REGION. HIGH CLOUD SHIELD WILL ADVANCE EAST ACROSS THE REGION THIS EVENING...BEFORE LOWERING AND THICKENING TO AN ALTO-NIMBOSTRATUS DECK EARLY THURSDAY ACROSS THE WEST. ANY LIGHT SNOW PRIOR TO DAYBREAK THURSDAY WILL BE LIMITED TO THE EXTREME NW...AND EVEN THERE IT WILL BE MAINLY IN THE FORM OF NON- ACCUMULATING FLURRIES. LOW TEMPS TONIGHT WILL BE IN THE SINGLE DIGITS TO LOWER TEENS. && .LONG TERM /THURSDAY THROUGH TUESDAY/... A STRONG...SEVERAL TO 8 HOUR SHOT OF WAA ALOFT AND MODERATELY STG UPPER LEVEL DIVERGENCE ASSOCIATED WITH THE RIGHT ENTRANCE REGION OF A 300 MB JET MAX ACROSS SRN ONTARIO WILL LEAD TO PERIODS OF LIGHT /TO BRIEFLY MDT SNOW/ FOCUSED ACROSS THE NW HALF OF THE STATE THURSDAY AFTERNOON INTO THURSDAY NIGHT. GUSTY WEST TO NORTHWEST WINDS AND BITTERLY COLD AIR WITH WIND CHILLS AT OR BELOW ADVISORY CRITERIA APPEAR LIKELY FOR FRIDAY INTO EARLY SATURDAY ACROSS THE CENTRAL AND NW PART OF THE STATE WITH STEADY OR SLOWLY FALLING TEMPS DURING THE DAY FRIDAY. SATURDAY STILL NOT LOOKING TOO BAD. FOR SUNDAY...SOUTHERN STREAM SYSTEM WITH DECENT/RELATIVELY STG DYNAMICS AND WAA SHOULD SPREAD PERIODS OF SNOW ACROSS THE STATE SUNDAY AFTERNOON AND NIGHT WITH LIGHT TO MODERATE ACCUMS POSSIBLE. FOR NOW WENT WITH SNOW. HOWEVER...SOME MIX COULD TRY TO WORK INTO THE AREA...BUT THINK SYSTEM IS MOVING TOO FAST TO GET MUCH DEEP WARM AIR INTO THE AREA. SYSTEM MOVES OUT QUITE QUICKLY...AND SHOULD BE OFF THE COAST BY LATE MONDAY MORNING IF NOT SOONER. COLDER AIR WILL FOLLOW FOR MONDAY NIGHT INTO TUE. DID LOWER TEMPS MONDAY NIGHT. && .AVIATION /15Z WEDNESDAY THROUGH SUNDAY/...
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HIGH PRESSURE WILL BUILD IN FROM THE WEST TODAY...BRINGING WIDESPREAD VFR CONDITIONS. LOCALIZED IFR/MVFR OVER SWRN AREAS EARLY WILL LIFT TO VFR BY MID DAY. NW WINDS WILL PICK UP A BIT THE FIRST HALF OF THE DAY...WITH BREEZIEST CONDITIONS IN THE LOWER SUSQ WHERE SUSTAINED NWRLY WINDS 15 TO 20 KTS WILL DEVELOP AFTER SUNRISE AND PERSIST INTO MID AFTN. ONLY THIN HIGH CLOUDS POSS TONIGHT AS WINDS BECOME LIGHT. OUTLOOK... THU...VFR TO START...WITH RESTRICTIONS SPREADING IN FROM THE WEST STARTING MIDDAY. THU NIGHT-EARLY FRI...WIDESPREAD IFR/MVFR IN SNOW. SAT...VFR. SUN...VFR TO START...WITH LATE DAY RESTRICTIONS SPREADING IN FROM THE SW.
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&& .CTP WATCHES/WARNINGS/ADVISORIES... NONE. && $$ SYNOPSIS...LA CORTE/LAMBERT NEAR TERM...LA CORTE/LAMBERT SHORT TERM...LAMBERT LONG TERM...LAMBERT/MARTIN AVIATION...RXR/LA CORTE

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