Area Forecast Discussion
Issued by NWS Pittsburgh, PA

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000 FXUS61 KPBZ 041001 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 501 AM EST Thu Mar 4 2021 .SYNOPSIS... Other than slight precipitation chances north and east of Pittsburgh early this morning, building high pressure should maintain dry weather through the weekend. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... Made some adjustments to sky cover today based on latest satellite and near term model data. Previous...Areas of stratocu are expected to overspread the area this morning, and continue this afternoon, in cold NW flow behind an exiting cold front. Isolated snow showers are possible N of I 80 and in the ridges, though a shallow moisture layer under lowering subsidence inversions should limit this activity. High temperatures are expected to be around 5 degrees below average. && .SHORT TERM /6 PM THIS EVENING THROUGH SATURDAY NIGHT/... An upper low is progged to persist across Eastern Canada through the weekend. Sfc high pressure building under the resulting NW flow aloft should maintain dry weather through the period, though a couple of weak troughs rotating around the low could result in some periodic increase in clouds across the Lower Great Lakes/Upper Ohio Valley region. Temperatures are expected to average around 5 degrees below seasonable levels through the period. && .LONG TERM /SUNDAY THROUGH WEDNESDAY/... The upper low is expected to move east Sunday. Riding should then build across the Central and Eastern CONUS through mid week, ahead of a Western CONUS trough. This should result in continued dry weather, but with a warming trend. && .AVIATION /10Z THURSDAY THROUGH MONDAY/... High pressure in place with northwest flow will bring some stratocumulus over the area by 12Z. This will bring some MVFR and IFR cigs across the area. It is possible that a few snow showers may develop but mainly in the north near FKL and DUJ. Any local snow shower may reduce vis to MVFR and even IFR. Winds will quickly ramp up by dawn and continue into the day with northwest winds gusting up to 20 knots at times, with some locally higher winds. .Outlook... Ceiling restrictions are possible with a late Friday cdfnt. && .PBZ WATCHES/WARNINGS/ADVISORIES... PA...None. OH...None. WV...None. && $$ is the U.S. government's official web portal to all federal, state and local government web resources and services.