Area Forecast Discussion
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907 FXUS61 KPBZ 291251 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 851 AM EDT FRI JUL 29 2016 .SYNOPSIS...
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A series of weather disturbances will keep showers in the forecast through the weekend.
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&& .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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9am update... fog taking longer to lift and soundings look like stratus will hang around a bit longer than expected. previous discussion... Areas of fog will blanket the area early this morning, as abundant low level moisture is left from yesterday`s rain and which is visible in the high surface dewpoints across much of the area. Fog will burn off by mid- morning and residual stratus will also dissipate. Expect scattered showers and storms to pop up again later today as the atmosphere will remain unstable and another wave crosses as evening approaches. With some minor ridging aloft this morning, the activity should hold off until the afternoon. Expect warmer temperatures today, with humid conditions.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY/... Very little change to the overall pattern, with zonal flow aloft and shortwaves riding eastward in the flow. The risk for showers and storms will continue through the entire weekend, with best timing linked to the passage of aforementioned waves. Continued humid with near seasonal daytime temperatures. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... Appears to be enough low level moisture for low chance pops in the ridges Monday, otherwise a weak bubble of surface high pressure looks to bring warm temperatures with little chance for showers Tuesday and Wednesday. A frontal boundary may get close enough for chance POPs on Thursday. A modified Superblend was used for the extended period. && .AVIATION /13Z FRIDAY THROUGH TUESDAY/... IFR fog and stratus will impact terminals through mid-morning until increased mixing helps dissipate fog and lift the stratus deck. VFR conditions will return by the afternoon with minimal shower chances as forecast soundings show largely stable conditions. Precipitation chances will increase tonight ahead of an approaching shortwave. .OUTLOOK /FRIDAY NIGHT THROUGH TUESDAY/... Broad upper troughing should maintain periodic shower and thunderstorm restriction potential through Monday. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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