Area Forecast Discussion
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523 FXUS61 KPBZ 262325 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 725 PM EDT TUE APR 26 2016 .SYNOPSIS... BUILDING HIGH PRESSURE WILL DRY WEDNESDAY...BUT LOW PRESSURE WILL BRING MORE RAIN THURSDAY. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
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ANOTHER EARLY EVE UPDATE WAS ISSUED TO CANCEL THE SVR TSTM WATCH REMAINING WRN PA COUNTIES AS COLD FRONT CONTINUES TO SAG SOUTHWARD. AREAS ALONG AND SOUTH OF I 70 WILL MAINTAIN A CHANCE FOR THUNDERSTORMS FOR A COUPLE MORE HOURS AS UPR 50S TO LOW 60S DEWPOINTS AND CONVERGING SFC WIND CONT TO SUPPORT INSTABILITY/UPDRAFTS.
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&& .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH THURSDAY/... BUILDING HIGH PRESSURE WILL DRY WEDNESDAY AND COOL ADVECTION SHOULD LIMIT TEMP RECOVERY TO NR THE SEASONAL AVGS. LARGE DIFFERENCES STILL EXIST ACROSS OPERATIONAL MODEL SOLUTIONS ON THE THURSDAY FORECAST...WITH TODAY`S FRONT RETURNING IN RESPONSE TO DEEPENING SURFACE LOW OVER THE MIDWEST. OPTED TO KEEP POPS GENERAL WITH A BROAD BLEND OF MODELS APPLIED. SLOWER TIMING ON THE ARRIVAL OF RAIN WAS APPLIED...BUT A LOT OF DETAILS STILL TO BE DETERMINED AS THE POTENT LOW PRESSURE MOVES OUT OF THE PLAINS AND WEAKENS ON APPROACH. && .LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/... BUILDING HIGH PRES IN THE WAKE OF THE AFOREMENTIONED LOW IS PROGGED TO PROVIDE A DRY START TO THE WEEKEND...BUT ANOTHER SHORTWAVE TROUGH IS FORECAST TO DIG TOWARD THE MID ATLANTIC REGION AND INCRS PRECIP CHANCES FOR THE UPR OH REGION ONCE AGAIN. ACTUAL TRACK WL REMAIN QUESTIONABLE FOR A WHILE...SO SUPERBLEND GUIDANCE WAS EXCLUSIVELY UTILIZED FOR THE LONG TERM PERIOD. && .AVIATION /00Z WEDNESDAY THROUGH SUNDAY/... REMAINING SHOWERS AND THUNDERSTORMS WILL FADE AS THE SUPPORTING COLD FRONT SAGS SOUTHWARD. HOWEVER...RESTRICTED CIGS WILL ADVECT OVR AREA PORTS IN THE COLD FLOW BEHIND THE FRONT. REMAINING STRATOCU WILL LIKEY DIMINISH BY WEDNESDAY MORNING AS SUBSIDENCE BUILDS AND WIND VEERS TO THE NORTH AND NORTHEAST. .OUTLOOK /WEDNESDAY NIGHT THROUGH SUNDAY/... RESTRICTIONS ARE LIKELY AGAIN THURSDAY/FRIDAY AS ANOTHER LOW PRESSURE SYSTEM IMPACTS THE REGION. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && $$

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