Area Forecast Discussion
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000 FXUS61 KPBZ 090826 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 426 AM EDT WED JUL 9 2014 .SYNOPSIS... A COLD FRONT WILL SLOWLY MOVE THROUGH TODAY KEEPING IN THE RISK FOR SHOWERS OR A STORM. HIGH PRESSURE BUILDS IN FOR THE END OF THE WEEK. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... A COLD FRONT WILL SLOWLY CROSS THE UPPER OHIO VALLEY TODAY. LIMITED MOISTURE AND UPPER LEVEL SUPPORT WILL KEEP POPS IN THE CHC/SCHC RANGE. MODELS ARE INDICATING MINOR SURFACE INSTABILITY AHEAD OF BOUNDARY...SO WILL NEED TO KEEP IN THE MENTION OF THUNDER. COOLER TEMPS TODAY WITH SLOWLY DECREASING HUMIDITY LEVELS. && .SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY/... SECONDARY FRONT WILL CLEAR THE ENTIRE REGION WEDNESDAY EVENING... ALLOWING FOR AN END TO SHOWER CHANCES. UPPER LEVEL TROUGH WILL SETTLE IN OVER THE UPPER OHIO VALLEY ON THURSDAY AS HIGH PRESSURE BUILDS INTO THE GREAT LAKES. THURSDAY WILL BE DRY AND COMFORTABLE WITH CU DEVELOPING. HIGH PRESSURE WILL BE IN CONTROL ON FRIDAY AS TROUGH SHIFTS TO THE EAST. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... HIGH PRESSURE WILL DRIFT EASTWARD SATURDAY AND SHOWER/STORM CHANCE WILL INCREASE SUNDAY/MONDAY WITH THE APPROACH AND PASSAGE OF A COLD FRONT. TEMPS AND HUMIDITY LEVELS WILL INCREASE ON THE EASTERN SIDE OF SURFACE BOUNDARY UNTIL WE COOL DOWN AND DRY OUT ON TUESDAY. && .AVIATION /09Z WEDNESDAY THROUGH SUNDAY/...
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NO WIDESPREAD RESTRICTIONS ANTICIPATED TODAY AS CLOUD BASES ASSOCIATED WITH ANY WIDELY SCATTERED SHOWERS/THUNDERSTORMS THAT MAY POP UP THIS AFTERNOON AHEAD OF SLOW MOVING COLD FRONT ARE EXPECTED TO REMAIN ABOVE 3KFT. MODEL GUIDANCE IS HINTING AT THE POSSIBILITY OF VISIBILITY RESTRICTIONS AFTER MIDNIGHT AS CLOUD COVERAGE SCATTERS OUT AND WINDS BECOME LIGHT FOLLOWING FRONTAL PASSAGE... HOWEVER...UPSTREAM OBS SHOW DEWPOINTS FALLING FASTER AND FURTHER BEHIND THE FRONT THAN GUIDANCE WOULD SUGGEST...SO HAVE OPTED TO NOT INCLUDED ANY BR OR FG IN THE LATEST TAFS. .OUTLOOK.../THURSDAY THROUGH SUNDAY/... VFR CONDITIONS EXPECTED THURSDAY THROUGH SATURDAY...WITH THE POSSIBILITY OF LOCALIZED RESTRICTIONS SUNDAY AS SHOWERS AND THUNDERSTORMS RETURN. .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE.
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