Area Forecast Discussion
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000 FXUS61 KPBZ 211727 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 127 PM EDT Fri Apr 21 2017 .SYNOPSIS... Building high pressure will return dry weather to the region today; however, rain can be expected south of I 70 with weekend low pressure. && .NEAR TERM /THROUGH TONIGHT/... The late morning updated featured only cosmetic changes to POPs and cloud cover as the cold front is completing a sweep of the region. Dry weather under building high pressure will be marred only be some residual showers along the I 68 corridor. Cold and dry advection will support cooler temperature tonight. Overall near term temperature will remain near the seasonal averages. && .SHORT TERM /SATURDAY THROUGH MONDAY/... A northern stream upper trough is progged for approach and passage tonight and Saturday as a deepening southern stream low tracks across the the Lower Ohio Valley. This scenario should result in increasing rain chances for the region, but with primary focus along and south of the I 70 corridor. That low is expected to continue shunting moisture across I 68 through the weekend as timing will be complicated as the low cuts off and deepens. Seasonal temperature will continue into early next week. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... Dry weather and moderating temperature is expected next week as ridging ensues in advance of a Wrn CONUS trough. Temperature may rise 10 to 20 degrees above average by late week. && .AVIATION /17Z FRIDAY THROUGH TUESDAY/...
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VFR conditions until early Saturday morning as cig restrictions and precipitation chances return with low pressure passing to the south. Locations south of I-70 will see the best chance for rain. .Outlook... VFR expected Sunday through Monday
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&& .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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