Area Forecast Discussion
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000 FXUS61 KPBZ 241844 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 244 PM EDT Mon Oct 24 2016 .SYNOPSIS... High pressure will bring dry and cool conditions later tonight into Wednesday. Low pressure will brings showers back into the forecast later Wednesday night into Friday. && .NEAR TERM /THROUGH TUESDAY/... Frost advisory issued for overnight for parts of eastern Ohio into southern counties of the northern West Virginia Panhandle, where the best opportunity for stratocu to break out later tonight with light winds will reside. This would give enough radiational cooling for areas of frost. Otherwise cool northwest flow will keep stratocu across much of the region into midday Tuesday, with a few light showers along the I-80 corridor. High pressure will gradually bring subsidence and decreasing clouds Tuesday afternoon. Temperatures will be about 10 degrees below the seasonal averages. && .SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY NIGHT/... Clear and cold under high pressure Tuesday night. Much of Wednesday will be dry but with increasing clouds as a warm front approaches in advance of deepening Great Lakes low pressure. Shower chances will increase Wednesday night, with likely POPs Thursday as system crosses the Upper Ohio Valley. Mid level system will close off over New England for a time, keeping cold northwest flow across the region into Thursday night with scattered showers. && .LONG TERM /FRIDAY THROUGH MONDAY/... Brief ridging will dry out the region Friday afternoon, but another trough will already be approaching from the west for Saturday. Unsettled weather and cooler than seasonal average temperatures will hold for the weekend into early next week, as a mean trough will remain over the eastern CONUS. In general, followed close to the Superblend guidance for construction of the extended period. && .AVIATION /19Z MONDAY THROUGH SATURDAY/... VFR with occasionally MVFR stratocu in cold advection will continue through at least the first half of the TAF period. Lake- enhanced showers will be situated in the vicinity of KFKL and KDUJ through the remainder of the afternoon but should do little to impact visibility. Clouds should begin to scatter out from west to east as a surface ridge builds overhead and we lose the instability of daytime heating tonight. However, as the upper trough shifts to the east, some of the model guidance swings a weak shortwave across the lakes which may maintain clouds and chances for precip, again mainly north of PIT. Regardless, VFR conditions should prevail for much of Tuesday. W-NW wind with gusts to 20kts will diminish tonight. .OUTLOOK /TUESDAY THROUGH FRIDAY/... The next chance for general restrictions will be with Thursday low pressure. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...Frost Advisory from 3 AM to 9 AM EDT Tuesday FOR OHZ039-048- 049-057>059-068-069. PA...None. WV...Frost Advisory from 3 AM to 9 AM EDT Tuesday FOR WVZ004-012. && $$ is the U.S. government's official web portal to all federal, state and local government web resources and services.