Area Forecast Discussion
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279 FXUS61 KPBZ 290927 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 527 AM EDT Mon Aug 29 2016 .SYNOPSIS... Warm and mainly dry weather is expected with building high pressure early this week. The passage of a mid week cold front should return seasonal temperatures to the region. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... No major changes for the near dawn update. A weak surface boundary is expected to move south across the region early this morning. With a lack of significant shortwave support, only isolated showers are expected north of I 80. Chance pops were maintained for northern WV and MD later today as the boundary and diurnally driven instability could result in a few showers or thunderstorms. Highs are still expected to be around 5 degrees above average, though dew points should slowly fall through the day behind the boundary. && .SHORT TERM /6 PM THIS EVENING THROUGH THURSDAY/... Building high pressure should maintain dry weather through early Wednesday. A cold front is progged for a late Wednesday/early Thursday approach and passage returning shower and thunderstorm chances to the region, though instability is progged to be minimal. Upper troughing is expected to to advance across much of the Northeastern CONUS by Thursday afternoon as surface high pressure builds across the Great Lakes region. This should provide cooler temperatures, lower humidity, and generally dry weather. && .LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/... The upper trough is progged to persist across the Northeast CONUS through late week as surface high pressure builds, maintaining the cool and dry weather. Upper ridging is progged to build in for the weekend with continued dry weather and a warming trend. && .AVIATION /10Z MONDAY THROUGH FRIDAY/... Areas of MVFR/IFR fog are expected to develop overnight, despite lower dew points filtering in, mainly in or near ports that received rain Sunday evening. Fog will lift 13Z-14Z on Monday, with VFR conditions expected by midday area wide. .OUTLOOK /MONDAY NIGHT THROUGH FRIDAY/... Restrictions are possible with a cold front Wednesday into Wednesday night. && .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.