Area Forecast Discussion
Issued by NWS State College, PA

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000 FXUS61 KCTP 272043 AFDCTP AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 343 PM EST TUE JAN 27 2015 .SYNOPSIS...
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THE STRONG STORM OFF THE COAST WILL MOVE NORTH AND EAST AWAY FROM THE REGION THROUGH TONIGHT. HIGH PRESSURE WILL BUILD OVER THE REGION FOR WED...FOLLOWED BY AN ALBERTA CLIPPER WHICH WILL CROSS THE AREA THURSDAY AND THURSDAY NIGHT. THIS SYSTEM WILL BRING A LIGHT COATING OF SNOW TO THE AREA. COLD HIGH PRESSURE WILL FOLLOW ONCE AGAIN FOR LATE FRIDAY INTO SAT. ANOTHER FAST MOVING LOW PRESSURE SYSTEM MAY BRING SOME LIGHT SNOW TO THE AREA LATE SUNDAY...BEFORE ANOTHER SURGE OF COLD AIR WORKS INTO THE AREA EARLY NEXT WEEK.
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&& .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
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DID ADJUST WEATHER AND POPS SOME INTO EARLY THIS EVENING...AS THERE IS STILL SEVERAL BANDS OF SNOW ACROSS THE WEST...AND A FEW WEAK RADAR RETURNS TO THE EAST. EARLIER DISCUSSION BELOW. LONG LIVED DEFORMATION ZONE WHICH ADDED ANOTHER 3-5 INCHES OVER THE PAST 24 HOURS TO WESTERN AND CENTRAL PORTIONS IS NOW PROPOGATING WSW...CAUGHT UP IN THE DOMINANT CIRCULATION AROUND THE DEEP SOUTHEAST NEW ENGLAND BLIZZARD. ADDITIONAL DEFORMATION FLURRIES AND SNOW SHOWERS HAVE FILLED IN ACROSS CENTRAL PA THIS AFTERNOON...AND ADDED SLIGHT CHC POPS FOR MOST TO COVER THESE INTO THIS EVENING. MOST AREAS WILL SEE LITTLE TO NO ACCUMULATION...AND THE MORE SIGNIFICANT ISSUE WILL BE AREAS OF BLOWING AND DRIFTING SNOW DUE TO INCREASING NE WIND GUSTS TO 35 MPH INTO TONIGHT. SKIES WILL BECOME PARTLY CLOUDY TO CLEAR ACROSS MOST OF CENTRAL AND EASTERN AREAS AFTER MIDNIGHT...AND WE`LL SEE WIND CHILLS DROP TO THE SINGLE DIGITS BELOW ZERO ACROSS WESTERN AND NORTHERN AREAS.
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&& .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH 6 PM WEDNESDAY/...
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HIGH PRESSURE CENTERED OVER OHIO WED 12Z REACHES SOUTHWEST PA BY 00Z THU...BRINGING RELAXING GRADIENTS BY LATE AFTERNOON AND IMPROVING CONDS FOR THE ALLEGHENIES AS WELL. ELSEWHERE A MOSTLY SUNNY DAY IS IN STORE...BUT IT WILL BE CHILLY ESPECIALLY IN THE MORNING AS WINDS WILL BE BREEZY TO START THE DAY. MAXES ON WEDNESDAY WILL BE SLIGHTLY MILDER THAN TODAY IN THE N BUT COOLER IN THE S...RANGING FROM LOWER 20S NORTH TO AROUND 30 SOUTH. A DECENT AMOUNT OF SUNSHINE WILL PREVAIL...HELPING MELT SOME SNOW IN PARKING LOTS ETC.
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&& .LONG TERM /WEDNESDAY NIGHT THROUGH TUESDAY/...
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WED NIGHT...BASED ON 12Z MODEL RUNS AND THAT WITH MAINLY CLEAR SKIES AND LIGHT WINDS...EXPECT TEMPS TO DROP...WITH FRESH SNOW COVER. CURRENT FCST STILL LOOKS GOOD. NEXT SYSTEM WILL BRING SOME SNOW SHOWERS TO THE AREA LATER THU INTO FRIDAY. THIS SYSTEM NOT LOOKING LIKE IT WOULD RESULT IN A COASTAL REAL NEAR THE COAST. HOWEVER...WHILE NOT REAL COLD ALOFT...THE COMBINATION OF WARM ADVECTION AND MODERATE DYNAMICS SHOULD HELP FIRE OFF BANDS OF SNOW...ESPECIALLY ACROSS THE NORTH AND WEST BY MID AFT. EXPECT SOME SNOW INTO THE SE LATE. MOST AREAS SHOULD SEE A DUSTING TO AN INCH OR TWO...PERHAPS 3 INCHES IN A FEW SPOTS ACROSS THE WEST AND NORTH. COLDER AIR FOR FRIDAY NIGHT...AS HIGH BUILDS INTO THE AREA. SATURDAY STILL NOT LOOKING TOO BAD. FOR SUNDAY...DID UP TEMPS SOME. DID NOT GO REAL WARM. DID UP POPS. FAST MOVING SYSTEM WILL RACE TOWARD THE AREA LATE IN THE DAY. FOR NOW WENT WITH SNOW. SOME MIX COULD TRY TO WORK INTO THE AREA...BUT THINK SYSTEM IS MOVING TOO FAST TO GET MUCH WARM AIR INTO THE AREA. SYSTEM MOVES FAST...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.
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&& .AVIATION /21Z TUESDAY THROUGH SUNDAY/...
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OVERALL...CONDITIONS WILL CONTINUE TO SLOWLY IMPROVE ACROSS CENTRAL PA AS INVERTED TROUGH OVERHEAD SLIDES SLOWLY TO THE EAST. GENERALLY LIGHT SNOW SHOWERS AND FLURRIES NOW CONFINED MAINLY TO THE WESTERN PORTION OF CWA AS DRIER AIR SLOWLY WORKS IN FROM THE NE. REDUCTIONS WILL CONTINUE ACROSS THE WEST FOR SEVERAL MORE HOURS BEFORE SNOW GRADUALLY WANES. THE RESULT WILL BE MVFR/IFR CONDITIONS PERSISTING IN THE WESTERN HIGHER TERRAIN...WHILE MAINLY VFR TO THE EAST. WINDS WILL BE IN THE 10-15 MPH RANGE INTO THIS EVENING. OUTLOOK... THU...VFR TO START...WITH LATE DAY RESTRICTIONS SPREADING IN FROM THE WEST. 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...DEVOIR/MARTIN NEAR TERM...DEVOIR/MARTIN SHORT TERM...DEVOIR/MARTIN LONG TERM...MARTIN AVIATION...DEVOIR/MARTIN

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