Area Forecast Discussion
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000 FXUS61 KPBZ 071903 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 203 PM EST Thu Dec 7 2017 .SYNOPSIS...
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Isolated snow showers this afternoon will be followed by mainly dry and cold weather until snow shower chances return with a Saturday cold front.
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&& .NEAR TERM /THROUGH TONIGHT/...
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A weak disturbance crossing the area will provide enough lift to generate isolated to scattered snow showers through the afternoon before the shortwave exits east this evening. Temperatures are expected to be around 5 degrees below normal overnight.
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&& .SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
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Troughing will be the dominant feature through the period. A surface low and associated cold front will cross the forecast area late Saturday afternoon through Sunday morning...resulting in relatively light snow accumulations. Temperatures are expected to remain 5 to 10 degrees below average.
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&& .LONG TERM /SUNDAY THROUGH THURSDAY/... A longwave trough is progged to persist across the Eastern CONUS through the period, as shortwaves rotate through the trough and maintain periodic snow shower chances. Temperatures are expected to average around 10 degrees below seasonal levels most days through the period. && .AVIATION /19Z THURSDAY THROUGH TUESDAY/... Isolated to scattered snow showers will continue at many terminals through the afternoon. Most locations have dropped to MVFR conditions in the snow showers, with only one or two isolated IFR visibility reports. Gusts have not been as widespread as previously forecast, and have lowered gusts in the forecasts where gusts were still included. Any precipitation should come to an end by the evening, with gusts also diminishing at that time. Some clearing will start to work into southeast Ohio overnight as the wave departs. .Outlook... The next chance for widespread restrictions is Saturday afternoon/evening as a shortwave trough approaches and increases chances for snow. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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