Area Forecast Discussion
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000 FXUS61 KPBZ 221324 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 924 AM EDT Fri Sep 22 2017 .SYNOPSIS... High pressure will maintain warm and dry weather through the middle of next week. && .NEAR TERM /THROUGH TONIGHT/...
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Very little to discuss as we welcome Autumn`s arrival this afternoon. High cirrus, best seen on the GOES-16 cirrus band, will continue to stream in from post tropical cyclone Jose. These clouds will be quickly shunted to our south by this afternoon as drier air works in from the north. While the clouds will initial hamper surface temperatures, lack of airmass change and clearing this afternoon will ensure our temperatures stay summer-like. Clearing again tonight will promote the production of valley fog in what is essentially a persistence forecast. Lows will stay above average.
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&& .SHORT TERM /SATURDAY THROUGH SUNDAY/... Upper ridge will continue to build across the eastern half of the country between a large trough in the western United States and a decaying Tropical Storm Jose. Temperatures should continue to average 10 to 15 degrees above seasonal levels. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... Dry weather continues through most of the long term. At this point, ensembles not really hinting at much rainfall until late in the period with the passage of a cold front. Temperatures will stay above average until the front passes. && .AVIATION /13Z FRIDAY THROUGH TUESDAY/... High pressure will maintain VFR and light wind with exception for peri-dawn fog. Fog may be less dense and less widespread early this morning, as high cirrus clouds are expected to increase. .Outlook... No widespread restrictions are expected with high pressure over the region. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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