Area Forecast Discussion
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000 FXUS61 KPBZ 072117 CCA AFDPBZ Area Forecast Discussion...CORRECTED National Weather Service Pittsburgh PA 417 PM EST Thu Dec 7 2017 .SYNOPSIS... Cold weather continues. Snow showers are likely with a reinforcing cold front on Saturday. && .NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
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Non problematic early eve snow showers will end as the supporting disturbance/reinforcing cold front slide eastward. Cold, to neutral temperature advection will support overnight lows about 8 degrees under the averages.
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&& .SHORT TERM /6 AM FRIDAY MORNING THROUGH SATURDAY NIGHT/... 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. && .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 /21Z THURSDAY THROUGH TUESDAY/... Scattered snow showers will continue to push east early this evening, eventually tapering off near or just after sunset. Any restrictions from these will be confined to south and east of Pittsburgh and should be short-lived. Otherwise, the ceilings will generally remain above 3kft and this evening as the cu field begins to dissipate. The MVFR bank over central Ohio has made slow eastward progress, but is not expected to make it into the area before dissipation after sunset. Relatively clear conditions are expected thereafter. Scattered wind gusts near 20kts will also dissipate after sunset. .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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