Area Forecast Discussion
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000 FXUS61 KPBZ 040823 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 423 AM EDT FRI SEP 4 2015 .SYNOPSIS... WARM AND HUMID CONDITIONS WILL CONTINUE THROUGH THE WEEKEND. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... REMNANTS OF OVERNIGHT COMPLEX WILL CONTINUE TO PROVIDE SOME MUCH NEEDED RAIN TO MAINLY WESTERN PORTIONS OF THE FORECAST AREA THIS MORNING. WITHIN THE RAIN SHIELD...ISOLATED CONVECTION WITH HEAVIER DOWNPOURS ARE POSSIBLE UNTIL THE ACTIVITY DISSIPATES THIS MORNING. SLIGHT TO LOW CHANCE DIURNALLY SUPPORTED CONVECTION IS AGAIN EXPECTED TO FIRE THIS AFTERNOON AS ANOTHER WEAK SHORTWAVE SWINGS THROUGH. NO CHANGE TO THE WARM AND HUMID AIR. && .SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY/... WARMTH AND HUMIDITY WILL CONTINUE TO PLAGUE THE REGION THIS WEEKEND AS BROAD SURFACE HIGH IS PROJECTED TO BUILD WESTWARD ACROSS PA UNDER A STRENGTHENING UPPER RIDGE. INCREASED SUBSIDENCE AND WARMTH ALOFT SHOULD INHIBIT DIURNAL CONVECTION. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... THE STRONG MID/UPPER RIDGE IS PROGGED TO REMAIN THROUGH EARLY NEXT WEEK...WITH CONTINUED WARM AND MUGGY CONDITIONS. RELIEF FROM THE QUITE WARM CONDITIONS MAY COME WITH COLD FRONT LATER WEDNESDAY INTO THURSDAY...AS WELL AS AN INCREASING CHANCE FOR THUNDERSTORMS. && .AVIATION /09Z FRIDAY THROUGH TUESDAY/... MVFR CONDITIONS WILL BE FAIRLY COMMON OVERNIGHT...EXCEPT IN THE IMMEDIATE WAKE OF THE OUTFLOW BOUNDARY EMANATING SOUTHEASTWARD ACROSS EASTERN OHIO FROM AROUND KZZV TO JUST NORTH OF KHLG. CONDITIONS WILL BRIEFLY BE VFR THERE DUE TO ENHANCED SURFACE MIXING. HOWEVER...RAINFALL YESTERDAY HAS ALLOWED FOR AMPLE BOUNDARY LAYER MOISTURE TO RESIDE ACROSS ALL SITES FOR MVFR CONDITIONS TO REDEVELOP OR CONTINUE...WITH LOCAL LIFR CONDITIONS WHERE THE MOST RAIN FALL TODAY...SUCH AS IN THE VALLEY AROUND KHLG. CONDITIONS WILL IMPROVE BY NOON TODAY...HOWEVER A FEW TS WILL BE POSSIBLE BY AFTERNOON...THOUGH COVERAGE AND TIMING IS TOO UNCERTAIN FOR ANYTHING MORE THAN PROB30 WORDING AT THE MOMENT. FRIES OUTLOOK...FRIDAY THROUGH TUESDAY... BRIEF RESTRICTIONS ARE ANTICIPATED IN EARLY MORNING FOG. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && $$

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