Area Forecast Discussion
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000 FXUS61 KPBZ 031854 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 254 PM EDT THU SEP 3 2015 .SYNOPSIS... WARM AND HUMID CONDITIONS WILL REMAIN THROUGH THE WEEKEND. && .NEAR TERM /THROUGH FRIDAY/... AFTER SCATTERED SHOWERS AND THUNDERSTORMS DISSIPATE THIS EVENING...SHOULD BE ANOTHER WARM AND MUGGY NIGHT WITH TEMPERATURES 5 TO 10 DEGREES ABOVE AVERAGE. SLIGHT TO LOW CHANCE FOR DIURNAL CONVECTION FRIDAY...WITH UNCERTAIN CONTRIBUTION FROM ANY SHORTWAVE TO HELP INCREASE STORM COVERAGE. STILL QUITE WARM AND HUMID WITH TEMPERATURES 5 TO 10 DEGREES ABOVE AVERAGE UNDER OVERALL HIGH HEIGHTS ALOFT. && .SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/... INCREASING UPPER LEVEL HEIGHTS THROUGH THEN WEEKEND AS RIDGE EXPANDS EASTWARD. LARGE SURFACE HIGH WILL DRIFT WESTWARD ACROSS PA UNDER STRENGTHENING RIDGE. LITTLE IF ANY DIURNAL SHOWERS DUE TO THE INCREASE IN LARGE SCALE SUBSIDENCE. MUGGY AND QUITE WARM CONDITIONS WILL CONTINUE. && .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 /19Z THURSDAY THROUGH TUESDAY/... GENERAL VFR CONDITIONS WILL PERSIST THROUGH THE EVENING UNDER HIGH PRESSURE RIDGING. THE EXCEPTION TO VFR COULD OCCUR WITH DIURNAL THUNDERSTORMS AS A VERY WEAK MID-LEVEL SHORTWAVE SHIFTS TOWARDS THE AREA FROM THE NORTHWEST. HOWEVER...COVERAGE OF ANY POP UP SHOWERS OR THUNDERSTORMS SHOULD REMAIN ISOLATED DUE TO WEAK FLOW AND FORCING. THUS DID NOT INCLUDE THUNDER IN TAFS. CONDITIONS ARE EXPECTED TO DETERIORATE TO MVFR AND IFR AS FOG DEVELOPS ACROSS THE TERMINALS BY DAWN. OUTLOOK...FRIDAY THROUGH TUESDAY... BRIEF RESTRICTIONS ARE ANTICIPATED EARLY MORNING FOG. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && $$

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