Area Forecast Discussion
Issued by NWS

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
-- Remove Highlighting --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS61 KPBZ 260352 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 1152 PM EDT Thu Aug 25 2016 .SYNOPSIS...
-- Changed Discussion --
Warm and humid conditions will remain through the weekend.
-- End Changed Discussion --
&& .NEAR TERM /THROUGH FRIDAY/...
-- Changed Discussion --
A midnight update was issued to adjust POPs for solid line of convection moving across the central CWA. Coverage will ease as the supporting shortwave slides eastward. Building high pressure will ensure dry, but warm and humid weather for Friday.
-- End Changed Discussion --
&& .SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY NIGHT/...
-- Changed Discussion --
Upper ridge of high pressure centered over the Mid-Atlantic will continue to build through the weekend. This, and a broad area of surface high pressure drifting across our north will keep our area dry through a majority of the weekend with a warming trend. Dewpoint temperatures will drop back down to around 60 by Friday night, but will slowly creep back up through Saturday and into Sunday. By Sunday, the very humid air mass will return with dewpoints in the mid to upper 60s common. This, and a draw of warmer air from the south will combine for high heat indices that may near 100 degrees. How warm we get Sunday may largely depend on the arrival of clouds associated with a disturbance passing well to our north. Model guidance indicates the potential for afternoon/evening showers and thunderstorms as a mid-level wave tries to flatten the upper ridge. With the best forcing riding over the ridge and staying to our north, coverage of showers may be limited.
-- End Changed Discussion --
&& .LONG TERM /MONDAY THROUGH THURSDAY/... Little change in pattern is indicated through the first half of next week with the southern U.S. upper high maintaining grip, but with tropical system encroachment toward the Southeastern Coast. Shortwaves with the zonal flow over the immediate area would support periodic, and diurnally-supported precip chances for the long term. Low-confidence slight to chance POPs were maintained for that eventuality as per the latest Superblend guidance. Warm temperatures can be expected given the lack of any significant airmass alteration. && .AVIATION /04Z FRIDAY THROUGH TUESDAY/... Showers and some thunderstorms will continue into the overnight hours. Prevailing conditions for the beginning of the night will be VFR, with MVFR/IFR restrictions possible in precipitation. After the line of storms moves from northwest to southeast, expect MVFR fog to develop once skies clear out. Conditions should quickly return to VFR after sunrise. .OUTLOOK /FRIDAY NIGHT THROUGH TUESDAY/... The next chance for restrictions should come with the approach of a front Sunday and Monday. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.