Area Forecast Discussion
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000 FXUS61 KPBZ 161503 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 1003 AM EST Thu Feb 16 2017 .SYNOPSIS...
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Snow showers will taper off through the afternoon as high pressure builds in. The high should maintain mainly dry and warmer weather this weekend.
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&& .NEAR TERM /THROUGH TONIGHT/...
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Scattered to numerous snow showers with NW flow and a shortwave rotating around a NE CONUS upper low should gradually taper off through the afternoon as the wave exits and high pressure builds in. Additional accumulation should be less than an inch, so the Winter Weather Advisory was allowed to expire. After a clearing trend late this afternoon and evening, mid level clouds are expected to increase in warm advection. Highs today should be around 10 degrees below average, with near seasonal low temperatures tonight.
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&& .SHORT TERM /FRIDAY THROUGH SATURDAY/... Broad area of high pressure will build in Friday, bringing much quieter weather for the weekend. Passing mid-level moisture could result in some clouds Friday, but otherwise all signs point to temperatures warming quickly. Strong warm advection will push Friday highs about 10 degrees above average, and even warmer for Saturday. By Saturday afternoon a few locations may be just a few degrees off record highs. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... A shortwave crossing the Tennessee Valley will temporarily knock down the ridging pattern over the eastern U.S., but most of the precipitation is still expected to fall to the south. Some light rain is still possible in areas south of Pittsburgh on Saturday night. High pressure and ridging aloft then return for Sunday and Monday, with continued well-above normal temperatures. A shearing shortwave crossing the Great Lakes Monday night and Tuesday may succeed in dampening the upper ridge and creating more of a zonal flow pattern. This would lead to more unsettled conditions from Tuesday on and bring some minor precipitation chances. Still, temperatures will cool only slightly and remain well above climatology through Thursday. && .AVIATION /15Z THURSDAY THROUGH MONDAY/...
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Scattered snow showers will continue to locally degrade conditions until passage of a cold-supporting shortwave this afternoon. Building high pressure will ensure VFR with decreasing stratocu and diminished wind by eve. .OUTLOOK... The next chance for widespread restrictions will be with a Tuesday cold front.
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&& .PBZ WATCHES/WARNINGS/ADVISORIES...
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MD...None. OH...None. PA...None. WV...None.
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&& $$ 07/15

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