Area Forecast Discussion
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690 FXUS61 KPBZ 200513 AAC AFDPBZ Area Forecast Discussion...UPDATED National Weather Service Pittsburgh PA 113 AM EDT Fri Oct 20 2017 .SYNOPSIS... High pressure will maintain dry and warm weather through the weekend. && .NEAR TERM /THROUGH TODAY/...
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Overnight period is in good shape, no changes needed. High pressure at the surface and aloft will again spread eastward across the Upper Ohio Valley today. Another day of dry and warm weather, with plenty of sunshine.
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&& .SHORT TERM /TONIGHT THROUGH SUNDAY/...
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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.
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&& .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
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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.
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&& .AVIATION /05Z FRIDAY THROUGH TUESDAY/...
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VFR is again expected through the forecast period. Building high pressure will also ensure light surface winds. .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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