Area Forecast Discussion
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000 FXUS61 KPBZ 200356 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 1156 PM EDT Sat May 19 2018 .SYNOPSIS... Rain chances should end Sunday morning as a cold front exits, with mainly dry weather expected the rest of the day under building high pressure. Rain chances return early in the week with crossing low pressure. && .NEAR TERM /THROUGH SUNDAY/... Scattered showers should continue overnight with the approach and passage of a cold front. Isolated thunderstorms are possible early as instability continues to diminish. The rain should end Sunday morning as the cold front exits, though areas S of I 70 are expected to be in close proximity of the front as it stalls. Maintained a slight chance of showers/tstms for that area. Otherwise, building sfc high pressure should return mainly dry weather for the afternoon as temperatures remain above seasonal levels. && .SHORT TERM /SUNDAY NIGHT THROUGH MONDAY NIGHT/... Low pressure will track slowly across the Midwest Sun night through Mon night, dragging the sfc front back nwd as a warm front and increasing potential for showers and storms. Temperature is expected to remain above seasonal average. && .LONG TERM /TUESDAY THROUGH SATURDAY/... The aforementioned low and associated cold front will cross the Upper OH Valley region Tue/Tue night and bring another round of showers and storms to the region. We will finally see a break in the weather the remainder of the work week as ridging builds in the region. && .AVIATION /04Z SUNDAY THROUGH THURSDAY/... Convection will trend downward early this evening before a cold front crosses after midnight. Increasing low clouds are expected in the wake of the front, with conditions dropping to MVFR/IFR levels owing to the abundant low-level moisture. High pressure building on Sun will lead to an eventual return to VFR conditions by Sun afternoon. OUTLOOK... Brief restrictions are expected most of next week as the weather pattern remains active. No sustained periods of IFR are predicted, although thunderstorms on Mon/Tue could lead to such restrictions. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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