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 280914 AFDCTP AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 514 AM EDT FRI AUG 28 2015 .SYNOPSIS... HIGH PRESSURE WILL BUILD EAST ACROSS THE STATE AND DRIFT OFF THE EAST COAST OVER THE WEEKEND. MUCH WARMER TEMPERATURES WILL MOVE INTO REGION FOR THE WEEKEND...AND VERY WARM AND INCREASINGLY HUMID WEATHER WILL CONTINUE INTO THE MIDDLE OF NEXT WEEK. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... 11-3.9 UM IR LOOP AT 0830Z SHOWS JUST A FEW SLOWLY DWINDLING PATCHES OF HIGH BASED STRATO CU AND ALTO CU ACROSS THE SUSQ/S WEST BRANCH VALLEY...AND ACROSS PORTIONS OF OUR SE COUNTIES...EAST OF KMUI. ELSEWHERE SKIES WERE MAINLY CLEAR WITH LIGHT AND VARIABLE WIND. TEMPS ARE GENERALLY IN THE MID TO UPPER 40S ACROSS THE NORTHERN AND WESTERN MTNS...AND IN THE MID TO UPPER 50S THROUGHOUT THE SUSQ VALLEY. TEMPS WILL JUST JUST ANOTHER 1-2 DEG F TO REACH MORNING LOWS. FOG THROUGHOUT THE LARGER STREAM/RIVER VALLEYS ACROSS NRN AND WESTERN PENN WILL OCCUR THROUGH 12Z...BEFORE QUICKLY DISSIPATING BY 13Z. TODAY WILL BEGIN OUR WARM UP AS HEIGHTS ALOFT BEGIN TO BUILD. AFTER SOME EARLY MORNING LARGE STREAM RIVER VALLEY FOG...SKIES WILL BECOME PARTLY TO MOSTLY SUNNY. MODEL 850 MB TEMPS SUPPORT HIGHS FROM THE 70S OVR MOST OF CENTRAL PA...TO THE L80S ACROSS THE LOWER SUSQ VALLEY...SOME 5-8 DEG WARMER THAN THURSDAY...AND NUDGING NORMAL VALUES FOR LATE AUGUST. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SATURDAY/... HIGH PRESSURE WILL SLIDE TO EASTERN PENN TONIGHT. THIS DOMINANT WEATHER FEATURE FOR THE NEXT SEVERAL DAYS WILL BRING CLEAR TO PTLY CLOUDY SKIES TONIGHT AND SATURDAY. AN INCREASE IN CU WILL DEVELOP ACROSS THE ALLEGHENIES OF WESTERN PENN ON SATURDAY...AS PWAT VALUES INCREASE TO NEAR 30MM BY 00Z SUN. SREF PROB OF CAPE EXCEEDING 1000 J/KG IS ZERO THROUGH 00Z SUNDAY...AND MU CAPES ARE AOB 200 J/KG DURING THIS PERIOD. && .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/... CENTRAL PA WILL BE ON THE WESTERN EDGE OF A SURFACE HIGH THIS WEEKEND...RESULTING IN SOUTHWESTERLY FLOW AND THE RETURN OF WARMER...MORE HUMID AIR TO THE REGION. A WEAK DISTURBANCE AT THE SURFACE AND ALOFT WILL APPROACH FROM THE OHIO VALLEY LATE SUNDAY...AND SHOULD WEAKEN AS IT MOVES EAST...BUT COULD BRING SOME SHOWERS AND ISOLATED THUNDERSTORMS SUNDAY EVENING INTO MONDAY...MAINLY ACROSS THE NORTHERN AND WESTERN MOUNTAINS. MODELS CONTINUE TO SHOW A LARGE UPPER LEVEL RIDGE BUILDING OVER THE EASTERN U.S. EARLY NEXT WEEK. THIS WILL CAUSE TEMPERATURES TO STAY ABOVE NORMAL THROUGH AT LEAST MIDWEEK. IT SHOULD ALSO KEEP CENTRAL PA MAINLY DRY...EXCLUDING ISOLATED DIURNAL SHOWERS AND THUNDERSTORMS. && .AVIATION /09Z FRIDAY THROUGH TUESDAY/... THE CLEAR SKIES HAVE LEAD TO FOGGY CONDITIONS. BFD SHOULD REMAIN IFR AND LOWER THROUGH 12Z BEFORE IMPROVING BETWEEN 12Z TO 14Z TO MVFR AND VFR BY MID TO LATE MORNING. EXPECTING WIDESPREAD MVFR WITH LOCAL VFR BY SUNRISE FRIDAY. CONDITIONS WILL IMPROVE QUICKLY FRIDAY MORNING AS THE FOG LIFTS AND DISSIPATES TO A VFR AFTERNOON. OUTLOOK... FRI EVE AND SAT...NO SIG WX EXPECTED. SUN-MON...MAINLY VFR WITH A SHOWER/THUNDERSTORM POSSIBLE. TUE...NO SIG WX EXPECTED. && .CTP WATCHES/WARNINGS/ADVISORIES... NONE. && $$ SYNOPSIS...LAMBERT NEAR TERM...LAMBERT SHORT TERM...LAMBERT LONG TERM...LAMBERT/HAGNER AVIATION...CERU/GARTNER

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