Area Forecast Discussion
Issued by NWS State College, PA

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS61 KCTP 280124 AFDCTP AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 824 PM EST TUE JAN 27 2015 .SYNOPSIS... INTENSE LOW PRESSURE NR CAPE COD THIS EVENING WILL LIFT NORTHEAST OVERNIGHT. 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. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
-- Changed Discussion --
INVERTED SFC TROF ACROSS SOUTHWEST PA STILL SUPPORTING SOME VERY LGT SNOW ACROSS THE LAUREL HIGHLANDS AS OF 01Z. HOWEVER...VSBYS AT KJST AND K2G4 ARND 5SM SUGGEST ANY ADDITIONAL ACCUM WILL BE LIMITED TO A DUSTING OVR THE HIGH TERRAIN FROM KJST SOUTHWARD. 01Z IR LOOP SHOWS A SLICE OF MCLEAR SKIES ACROSS CENTRAL PA...WHILE STRATOCU LINGERS OVR THE W MTNS AND BACK EDGE OF CLOUDS FROM COASTAL LOW STILL COVER EASTERN PA. NORTHERLY FLOW ADVECTING MUCH DRIER AIR INTO THE STATE SHOULD CAUSE REMAINING LOW CLOUDS AND ANY FLURRIES TO DISSIPATE ACROSS THE W MTNS OVERNIGHT. CLEARING SKIES ALSO EXPECTED ACROSS THE EASTERN COUNTIES...AS COASTAL LOW EXITS. CLEARING SKIES AND DIMINISHING NW WIND WILL ALLOW TEMPS TO FALL TO THE SINGLE DIGITS ACROSS THE ALLEGHENY MTNS...AND THE LOW/MID TEENS ACROSS THE LOWER SUSQ VALLEY.
-- End Changed Discussion --
&& .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH 6 PM WEDNESDAY/... HIGH PRESSURE AND ASSOC LOW PWAT AIR MASS WILL PROVIDE THE AREA WITH A MSUNNY WEDNESDAY. DESPITE THE SUN...TEMPS WILL REMAIN WELL BLW 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. && .LONG TERM /WEDNESDAY NIGHT THROUGH TUESDAY/... 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. && .AVIATION /02Z WEDNESDAY THROUGH SUNDAY/... 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. && .CTP WATCHES/WARNINGS/ADVISORIES... NONE. && $$ SYNOPSIS...DEVOIR/MARTIN NEAR TERM...FITZGERALD SHORT TERM...DEVOIR/MARTIN LONG TERM...MARTIN AVIATION...DEVOIR/MARTIN

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.