Area Forecast Discussion
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000 FXUS61 KPBZ 232101 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 501 PM EDT Wed May 23 2018 .SYNOPSIS... High pressure will maintain dry weather and seasonable temperature through Friday. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/... No appreciable changes were needed for the eve update as building high pressure and dry advection will maintain quiet overnight weather and seasonably cool temperature. && .SHORT TERM /6 AM THURSDAY MORNING THROUGH SATURDAY/... Dry and warmer conditions with gradually increasing humidity can be expected for the close of the work-week as a ridge of high pressure slides across the region. Short term high temperatures were projected 10 to 15 degrees above the averages under the amplified ridging, while morning lows in the initially dry airmass should remain near, to about 5 degrees above those averages. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... An approaching shortwave trough is projected to erode the ridge by Saturday and tap Gulf moisture funneled over the SE U.S. Warm, humid conditions will thus be accompanied by diurnally supported shower and thunderstorm chances for the weekend. Model consensus is of persistent weak troughing over the Ern CONUS early next week, with a cutoff southern stream low over the Sern states. A forecast of warm and humid conditions with diurnally supported convection was thus maintained. && .AVIATION /21Z WEDNESDAY THROUGH MONDAY/... Building high pressure will maintain general VFR into Friday, aside from patchy and shallow peri-dawn fog at terminals nearest the rivers. OUTLOOK... Restriction potential returns with a weekend low pressure trough. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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