Area Forecast Discussion
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180 FXUS61 KPBZ 281209 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 809 AM EDT Fri Oct 28 2016 .SYNOPSIS... Building high pressure will slowly decrease cloud cover and keep the area cool and dry today. Warmer temperatures on Saturday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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For the morning update, only made adjustments to weather to reflect continuation of drizzle. High pressure and warm advection will decrease cloud cover today, allowing temperatures to warm just a bit, but still remain below seasonal averages.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY/... Upper level flow will become zonal on Saturday, but we will still see an influx of warmer air, as the lower and mid-level flow turns to the southwest. With a lack of a strong push from the upper levels, the next system will struggle to make much southward progression late Saturday. Decreased the southward intrusion of PoPs late Saturday and Saturday night. With the aforementioned warm air advection, Saturdays highs will be close to 10 degrees above normal. Surface front will finally begin to push southward late Saturday night and Sunday as the main shortwave crosses the Great Lakes and eventually the Upper Ohio Valley. Showers will spread over the entire region Sunday, with the surface boundary reaching the Mason-Dixon line by afternoon. Upper level support remains weak, so would think that shower activity would be scattered. With clouds and rain, temperatures on Sunday will return to near normal. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... The upper Ohio Valley will be on the top side off strengthening mid level ridging into Wednesday, with above average temperatures. The ridge will retrograde mid week, allowing a frontal system to slide south of the region Thursday. With timing of this system in doubt, slight chance POPs were included. && .AVIATION /12Z FRIDAY THROUGH TUESDAY/...
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MVFR conditions should gradually improve to VFR this morning as high pressure briefly builds overhead and we lose the moisture fetch off of Lake Erie. VFR will then prevail through the rest of the period with light wind shifting from WNW to SE. .OUTLOOK /FRIDAY NIGHT THROUGH TUESDAY/... General restrictions are again possible with a Sunday cold front.
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&& .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$ is the U.S. government's official web portal to all federal, state and local government web resources and services.