Area Forecast Discussion
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000 FXUS61 KPBZ 201851 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 251 PM EDT Sun May 20 2018 .SYNOPSIS... After a brief dry stretch, rain chances return early in the week with crossing low pressure. Conditions should dry out by Wednesday. && .NEAR TERM /THROUGH TONIGHT/... High pressure will maintain dry conditions this afternoon and overnight outside of a possible stray shower over the ridges this afternoon. Surface dewpoints this afternoon in the low 60s to upper 50s hint at a favorable hydrolapse overnight for fog development as partial clearing with increasing subsidence into the evening along with lessening winds will allow decoupling and radiational cooling to a degree. && .SHORT TERM /MONDAY THROUGH WEDNESDAY/... The front that has stalled out to the south will be brought back to the north by a wave of low pressure moving to the northeast. The low pressure will be over western Ohio Monday evening and over Lake Erie by Tuesday morning. The highest chances for precipitation will be during the Monday night/Tuesday period and have continued likely pops. This front which has been in and around the region for more than a week should finally move definitively to the south Tuesday night into Wednesday, allowing for a period of dry weather. Temperatures will be a few degrees above normal. && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... Surface high pressure should allow for dry weather over multiple days before the chance of rain returns for the weekend with low pressure moving over the Great Lakes. Have maintained likely pops on Sunday with the passage of a cold front. Temperatures should remain a few degrees above normal. && .AVIATION /19Z SUNDAY THROUGH FRIDAY/... low VFR / high MVFR stratocu will persist through much of the afternoon. Expect restrictions overnight as fog develops with light winds and a favorable hydrolapse. OUTLOOK... Brief restrictions are expected into the middle of next week as the weather pattern remains active. No sustained periods of IFR are predicted, although thunderstorms on Mon/Tue could lead to such restrictions. && .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.