Area Forecast Discussion
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000 FXUS61 KPBZ 170626 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 226 AM EDT WED SEP 17 2014 .SYNOPSIS... DRY AND SEASONABLE COOL CONDITIONS CAN BE EXPECTED INTO FRIDAY. && .NEAR TERM /THROUGH TODAY/...
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LOW LEVEL CLOUD COVERAGE THAT HAS DEVELOPED OVER THE PAST COUPLE HOURS HAS LIMITED TEMPERATURE FALLS OVERNIGHT...WHILE LATEST GUIDANCE GIVES INDICATION THAT SCATTERED TO BROKEN CLOUD COVERAGE BETWEEN 3-5KFT SHOULD PERSIST UNTIL AFTER SUNRISE. WITH THAT...STILL EXPECT A FAIR AMOUNT OF FOG DEVELOPMENT AS DEWPOINT DEPRESSIONS ARE MINIMAL BUT WIDESPREAD DENSE FOG IS NOT LIKELY AND ADVISORIES WILL NOT BE NEEDED. SCATTERED SHALLOW CUMULUS WILL DEVELOP TOMORROW AS THERE IS ENOUGH MOISTURE TRAPPED UNDER A STRONG SUBSIDENCE INVERSION AT 5KFT. WITH HIGH PRESSURE BUILDING IN AND LIMITED MIXING ALOFT...TEMPERATURES WILL REMAIN SLIGHTLY BELOW NORMAL. TOMORROW NIGHTS MINIMUM TEMPERATURES WILL BE SIMILAR TO THOSE OBSERVED TONIGHT AND WHILE THERE WILL BE PATCHES OF FOG THAT DEVELOP...THE EXTENT WILL BE LESS THAN WHAT HAS RECENTLY BEEN OBSERVED DURING THE MORNINGS.
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&& .SHORT TERM /TONIGHT THROUGH FRIDAY NIGHT/... A SHORTWAVE WILL PUSH A REINFORCING COLD FRONT ACROSS NEW YORK STATE THURSDAY. THIS WILL BRING MORE CLOUDS DAYTIME THURSDAY BUT NOT ENOUGH MOISTURE TO PUT IN ANY POPS. OTHERWISE COOL HIGH PRESSURE WILL DOMINATE WITH BELOW NORMAL TEMPERATURES. && .LONG TERM /SATURDAY THROUGH TUESDAY/... A WARM UP EXPECTED FOR THE EARLY WEEKEND AS THE SFC HIGH SHIFTS WELL EAST OF THE AREA AND UPPER LEVEL FLOW BECOMES MORE ZONAL. TEMPS WILL...AT LEAST TEMPORARILY...RETURN TO NEAR AVERAGE SAT/SUN AHEAD OF THE NEXT SYSTEM. THE BEST CHANCE OF PRECIPITATION OVER THE NEXT 7 DAYS WILL COME WITH AN ELONGATED TROF AND ASSOCIATED COLD FRONT SUN WITH POSSIBLE SHOWERS WITH COLD AIR ALOFT MONDAY. COOL HIGH PRESSURE TUESDAY. && .AVIATION /06Z WEDNESDAY THROUGH SUNDAY/...
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AREAS OF SCATTERED TO BROKEN CLOUD COVERAGE THAT HAS DEVELOPED WILL LIMIT OVERALL FOG FORMATION OVERNIGHT IN GENERAL...HOWEVER...IFR FOG WILL STILL BE POSSIBLE AT TERMINALS BY DAYBREAK THIS MORNING. PARTICULARLY IN THE VALLEYS AND OVER AREAS WHERE CLOUDS WERE LIMITED OVERNIGHT. FOG WILL BURN OFF BY 14-15Z...LEAVING SCATTERED SHALLOW CUMULUS AROUND 5KFT AGL. OUTLOOK...WEDNESDAY THROUGH SUNDAY... OUTSIDE OF THE POSSIBILITY OF VALLEY FOG ONE OR TWO MORNINGS...VFR CONDITIONS ARE EXPECTED THROUGH THE WEEK.
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&& .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && $$

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