Area Forecast Discussion
Issued by NWS State College, PA

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000 FXUS61 KCTP 292344 AFDCTP AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 744 PM EDT WED JUL 29 2015 .SYNOPSIS... SUMMERTIME HEAT AND HUMIDITY WILL BE THE MAIN WEATHER STORY TODAY ACROSS CENTRAL PENNSYLVANIA. A COLD FRONT WILL MOVE THROUGH THE KEYSTONE STATE ON THURSDAY...WITH ISOLATED SEVERE THUNDERSTORMS POSSIBLE NEAR THE LOWER SUSQUEHANNA VALLEY. FRIDAY WILL BE SEASONABLY WARM AND DRY WITH MUCH LOWER HUMIDITY TO CLOSE OUT JULY 2015. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
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ISOLATED SHOWERS HAVE SUCCUMBED TO THE VERY WARM MID LEVELS THIS EVENING AND ARE PETERING OUT ACROSS THE LAUREL HIGHLANDS AND SOUTH CENTRAL MOUNTAINS. ANOTHER WARM NIGHT IS IN STORE...ALONG WITH AREAS OF VALLEY FOG. COLD FRONT APPROACHES IN THE PRE DAWN HOURS WITH POPS INCREASING OVER WESTERN CWA LATE.
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&& .SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/... COLD FRONT WITH ASSOCIATED CONVECTION WILL CROSS THE CWA THURSDAY WITH SCATTERED THUNDERSTORM ACTIVITY. SPC OUTLOOK SHIFTS MARGINAL LINE EASTWARD...OUTSIDE OF MOST OF THE CWA...BUT CANNOT RULE OUT SOME STRONGER STORMS FOR OUR EASTERN SECTIONS OF THE CWA IN THE AFTERNOON. WITH DRYING CONDITIONS AND SOME DOWNSLOPING...TEMPERATURES WILL ONCE AGAIN BE QUITE WARM DURING THE AFTERNOON HOURS. && .LONG TERM /FRIDAY THROUGH WEDNESDAY/... LITTLE CHANGE IS ANTICIPATED IN THE LARGE SCALE FLOW PATTERN ACROSS THE EASTERN U.S. THROUGH THE MEDIUM RANGE PERIOD...WITH A MEAN RIDGE IN THE WEST AND BROAD TROUGH EXTENDING SOUTHWESTWARD FROM HUDSON BAY INTO THE NORTHEAST. PRECIPITATION CHANCES SHOULD BE RATHER SPARSE AND FOCUSED ALONG WEAKENING NRN STREAM FRONTAL SYSTEMS PROGRESSING SEWD FROM THE GREAT LAKES ABOUT EVERY 1-2 DAYS STARTING ON SATURDAY. CONFIDENCE IN TIMING IS LOW ESPECIALLY INTO EARLY NEXT WEEK GIVEN INCREASING MODEL SPREAD. HOWEVER...THE NORTHERN ZONES APPEAR TO BE MOST AFFECTED WITH LESS PRECIP OVER THE SOUTHERN HALF OF THE STATE. TEMPERATURES WILL REMAIN SEASONAL. && .AVIATION /00Z THURSDAY THROUGH MONDAY/...
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WIDESPREAD VFR THIS EVENING WILL GIVE WAY TO INCREASING CLOUDS AND THE DEVELOPMENT OF SOME HAZE/THIN FOG. MOST TERMINALS WILL SEE VIZ SLIP TO 2-4 MILES IN THE HOURS AFTER MIDNIGHT WITH SOME LOW CLOUDS LIKELY ADVECTING INTO SOUTH-CENTRAL AREAS IN THE VERY HUMID TROPICAL AIRMASS. BY MORNING SHOWERS AND SCATTERED THUNDERSTORMS WILL BEGIN MOVING INTO WESTERN AREAS AHEAD OF A COLD FRONT. THE FRONT WILL BE MOVING THROUGH EASTERN PA RATHER EARLY IN THE AFTERNOON SO SHOWERS/STORMS WILL NOT BE AN ALL DAY EVENT AT AREA AIRPORTS. DRIER CONDITIONS WILL DEVELOP WEST TO EAST FROM LATE MORNING INTO MID AFTERNOON. OUTLOOK... FRI...MAINLY VFR. SAT...MAINLY VFR...SCATTERED SHOWERS/THUNDERSTORMS. SUN...MAINLY VFR. MON...MAINLY VFR...SCATTERED SHOWERS/THUNDERSTORMS.
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&& .CTP WATCHES/WARNINGS/ADVISORIES... NONE. && $$ SYNOPSIS...STEINBUGL NEAR TERM...DEVOIR SHORT TERM...ROSS LONG TERM...STEINBUGL/TYBURSKI AVIATION...ROSS/DEVOIR/LA CORTE

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