Area Forecast Discussion
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000 FXUS61 KPBZ 260938 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 538 AM EDT WED AUG 26 2015 .SYNOPSIS... COOLER CONDITIONS AND SPARSE SHOWER CHANCES CAN BE EXPECTED UNTIL HIGH PRESSURE BEGINS TO REBUILD ON FRIDAY. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... TROUGH AXIS WILL DRIFT THROUGH THE AREA TODAY KEEPING IN CLOUDS AND THE RISK FOR SHOWERS...MAINLY ACROSS THE NORTHERN HALF. TEMPERATURES WILL REMAIN BELOW SEASONABLE LEVELS. && .SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY/... THE CLOSED UPPER LOW...TO THE NORTH OF THE GREAT LAKES...WILL BEGIN FILLING IN ON THURSDAY. ANOTHER SHORTWAVE....SWINGING SOUTHWARD IN THE NORTHWEST FLOW ALOFT...WILL CROSS THURSDAY AFTERNOON. THIS SHOULD PROMOTE CU DEVELOPMENT AND KEEP TEMPERATURES BELOW NORMAL. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... MODEL GUIDANCE IS IN RELATIVELY GOOD AGREEMENT WITH THE FILLING OF THE EASTERN CONUS UPPER TROUGH BY FRIDAY AND A SHORTWAVE TROUGH APPROACHING THIS WEEKEND. THIS WILL SUPPORT A TEMPERATURE MODERATION TO...THEN ABOVE THE AVERAGES...ALTHOUGH INCREASED MOISTURE IN THE DEVELOPING SOUTHWEST FLOW COULD LEAD TO DIURNAL SHOWERS AND THUNDERSTORMS SATURDAY NIGHT AND SUNDAY. SURFACE HIGH PRESSURE RETURNS NEXT WEEK. && .AVIATION /10Z WEDNESDAY THROUGH SUNDAY/...
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TROUGH AXIS WILL SWING ACROSS THE AREA...WITH PLENTY OF CLOUDS THROUGH THE DAY. MVFR CIGS WILL BE POSSIBLE DURING THE MORNING HOURS...ESPECIALLY NORTH OF I-80...WHERE A FEW SCATTERED LIGHT SHOWERS ARE ALSO POSSIBLE. MVFR CIGS POSSIBLE FURTHER SOUTH ON A TEMPORARY BASIS. EXPECT MOSTLY VFR CIGS BY AFTERNOON...WITH SHRA CHANCES ENDING BY SUNSET. DEPENDING ON AMOUNT OF CLEARING TONIGHT...THERE IS BETTER POTENTIAL FOR AT LEAST PATCHY MVFR/IFR FOG AT SOME LOCATIONS DURING THE THURSDAY PREDAWN HOURS. CL OUTLOOK...WEDNESDAY NIGHT THROUGH SUNDAY... NO EXTENSIVE IFR IS EXPECTED THROUGH THE WEEKEND.
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&& .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && $$

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