Area Forecast Discussion
Issued by NWS State College, PA

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000 FXUS61 KCTP 301038 AFDCTP Area Forecast Discussion National Weather Service State College PA 638 AM EDT TUE AUG 30 2016 .SYNOPSIS... High pressure will bring another period of warmer than normal and mainly dry weather into Wednesday. A cold front will move across the commonwealth late Wednesday and early Thursday, followed by a refreshingly cooler airmass with low humidity Thursday through Saturday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... Sfc high centered over the Fingerlakes region this morning providing a comfortably cool morning to the commonwealth. Sunrise temps range from arounjd 50F in the far north to the lower to middle 60s southeast...with sfc dewpoints in the mid 50s north to the lower 60s southeast. The high will remain entrenched across the region through early Wednesday...providing another gem of a day for central PA today. Expect mostly sunny skies and highs ranging from the upepr 70s north to the upper 80s southeast. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM WEDNESDAY/... Backing flow aloft takes place tonight through Wednesday as upper ridge over central Mississippi River valley retrogresses WSW to the south central plains. This will induce stronger westerlies across the central and eastern GLAKS and Ohio Valley by tonight... causing increasing deep layer moisture to make a run at western PA from the Ohio Valley tonight and Wednesday. At the same time...a sagging 5h shear axis will approach from the NW Wednesday afternoon...touching off isolated to scattered showers and thunderstorms. Mins tonight will range from mid 50s north to the mid 60s southeast...while highs Wednesday are near to ever so slightly above Tuesday maxes. && .LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/... The extended period looks like it will feature a transition from a persistent upper-level ridge over the eastern United States to a weak upper-level trough by mid to late week. As a result, above-normal temperatures through the Tuesday-Wednesday timeframe will transition to near or a little below normal by the end of the period. Medium range guidance agrees with a second-stronger cold front pushing SE across the area Wednesday afternoon/early Wed night, with a renewed chance for showers and thunderstorms. This front will be followed by a cool-down for the end of next week and into Saturday. Max temps should be mainly in the 70s Thursday into the weekend over the northern and western higher terrain, with low to mid 80s elsewhere as an upper trough amplifies from central Quebec...to the Mid Atlantic Piedmont. && .AVIATION /12Z TUESDAY THROUGH SATURDAY/... Areas of IFR/LIFR visibility in BR/FG with cigs AOB 500ft AGL will develop through the predawn hours. Widespread VFR conditions expected to return by 13-14z and continue into tonight. Patchy BR/FG may develop again toward daybreak Wednesday. Outlook... Wed...Sct PM TS impacts possible. Thu-Sat...No sig wx expected. && .CTP WATCHES/WARNINGS/ADVISORIES... None. && $$ SYNOPSIS...DeVoir NEAR TERM...DeVoir SHORT TERM...DeVoir LONG TERM...Lambert/Gartner AVIATION...Steinbugl

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