Area Forecast Discussion
Issued by NWS State College, PA

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000 FXUS61 KCTP 292259 AFDCTP AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 659 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 SUCCOMBED 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/... VFR IN MOST AREAS THIS EVENING. CLOUDS WILL START TO ADVANCE LATER TONIGHT AHEAD OF A COLD FRONT APPROACHING FROM THE WEST. MVFR CIGS AND VSBYS ARE POSSIBLE BEGINNING IN THE SOUTHWEST AND THEN SPREADING EASTWARD AS SHOWERS IN ADVANCE OF THE FRONT MAY NUDGE INTO BFD BEFORE SUNRISE THURSDAY. THE FRONT SHOULD PASS THURSDAY BRINGING DRIER CONDITIONS AND A DECREASE IN THE COVERAGE OF SHOWERS AND THUNDERSTORMS LATE THURSDAY INTO FRIDAY. OUTLOOK... FRI...MAINLY VFR. SAT...MAINLY VFR...PM TSRA POSS W. SUN...MAINLY VFR. && .CTP WATCHES/WARNINGS/ADVISORIES... NONE. && $$ SYNOPSIS...STEINBUGL NEAR TERM...DEVOIR SHORT TERM...ROSS LONG TERM...STEINBUGL/TYBURSKI AVIATION...ROSS/DEVOIR

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