Area Forecast Discussion
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174 FXUS61 KPBZ 231548 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 1148 AM EDT Sun Apr 23 2017 .SYNOPSIS... High pressure should maintain dry weather today. Low pressure is expected to track along the East Coast, resulting in periodic rain chances mainly east of I 79 for the start of the new work week. && .NEAR TERM /THROUGH TONIGHT/... Surface high pressure will hold dry conditions through today as a cut-off low churns into the southeast U.S. High clouds will begin to increase this afternoon, but a mix of sun and clouds will be maintained through evening. Northward expansion of rain will start to reach our southeastern zones near midnight. Beyond that, given the continued southeastern drift of the parent low, more favorable rain chances will be well confined. Increased PoPs over the high elevations tonight, while continuing to keep areas west of the Ridges dry. High temperatures today will top out a few degrees above normal. Lows tonight will be a bit trickier as clouds begin to increase areawide, and easterly flow strengthens. This should keep the mountains cool tonight, while downslope areas west of the Ridges warm. These locations should stay near or a few degrees above average. && .SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/... The low is forecast to dig toward the Southeastern CONUS before tracking up the East Coast during the first half the week. This scenario should confine rain chances initially to the I 68 corridor tonight with that area on the nrn periphery of the low. Eventual nwd progression of rain chances Mon and Tue with the area east of I 79 on the wrn periphery of the low as it tracks along the coast. Temperatures should average a few degrees above seasonal levels through the period. && .LONG TERM /WEDNESDAY THROUGH SATURDAY/... Ridging and rising heights in response to an approaching Midwestern trough should result in dry and warm weather for mid week. The flow is progged to amplify by late week as broad low pressure develops over the western CONUS. Embedded shortwaves in moist southwest flow aloft should return periodic rain chances by late week and the weekend. Temperatures are expected to average 10-15 degrees above average. && .AVIATION /16Z SUNDAY THROUGH THURSDAY/... High pressure will maintain VFR and light northeast to east sfc wind into Monday. .Outlook... The next chance for general restrictions is expected with mid week low pressure. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$ is the U.S. government's official web portal to all federal, state and local government web resources and services.