Area Forecast Discussion
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000 FXUS61 KPBZ 171135 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 735 AM EDT Tue Sep 17 2019 .SYNOPSIS... Dry weather and warm temperature are expected the rest of the week. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... Visible satellite imagery shows a low stratus deck impacting mainly western portions of the forecast area. This should scatter out by mid morning with the onset of diurnal mixing. Otherwise, no additional weather impacts are expected today. Previous discussion follows... High pressure will build as an upper ridge amplifies over the upper midwest, bringing increasingly dry air to the region. && .SHORT TERM /6 PM THIS EVENING THROUGH THURSDAY/... The amplifying upper ridge will build eastward through the week with very high confidence, leading to strengthening sfc high pressure, drying low levels and strong insolation. Temperature are likely to be in the lower 80s, well-above the average of low-mid 70s. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... As the western-CONUS trough lifts into the Midwest late this week, the eastern-CONUS ridge axis will shift ewd on Sat/Sun. The net result will be swly flow aloft by Sat afternoon, persisting into early next week. Despite the flow transition, any chance for rain will hold off until late Sun/Mon, when convergence and moisture advection strengthen ahead of an advancing cold front. Until that time, wx should be dry, temperature will increase steadily and will remain above average. && .AVIATION /12Z TUESDAY THROUGH SATURDAY/... Areas of MVFR to IFR stratus is expected early this morning with low level moisture behind an exiting cold front. Conditions should improve to VFR by mid morning, and continue through the rest of the TAF period, under building high pressure and dry advection. .Outlook... No widespread restrictions expected under high pressure. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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