Area Forecast Discussion
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444 FXUS61 KPBZ 201723 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 123 PM EDT Fri Oct 20 2017 .SYNOPSIS... High pressure will maintain dry and warm weather through the weekend. && .NEAR TERM /THROUGH TONIGHT/... With noon update, increased high temperatures 2-3 degrees in all locations considering trends through the morning hours. High pressure will remain over the area today, keeping a dry and mostly clear forecast. The upper-level ridge will build through this evening, allowing our daytime highs to creep up from yesterday`s readings. Have bumped temperatures up a few degrees in some spots, but generally highs will be about 10 degrees above the average. Lows should stay fairly consistent from last night, about 5 degrees above average. && .SHORT TERM /SATURDAY THROUGH SUNDAY/... High pressure will remain anchored through the weekend, keeping it warm and dry. Despite an increase in cirrus and the ridge axis shifting east late Saturday, increasing southwesterly flow will allow temperatures to climb further and by Sunday readings will be about 15 degrees above average. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... High pressure ridge shifts east Sunday night into Monday as the broad western CONUS trough trudges eastward. Models differ slightly in the evolution and timing of the trough, but despite these timing differences, a pattern change will occur early next week, bringing rain and eventually much cooler temperatures. && .AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
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VFR conditions will continue through Saturday. High pressure is in command. Only cirrus clouds are expected at most, and winds will remain light as well. Any predawn/sunrise valley fog should remain patchy and affect a few terminals briefly, if at all. .Outlook... Restrictions are likely with a Monday cold front.
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&& .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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