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State College, PA
Weather Forecast Office
.AVIATION /08Z THURSDAY THROUGH MONDAY/... Anafrontal rain along cold front drifting south across the Mid- Atlantic will favor flight restrictions over the South-Central Mountains (KJST/KAOO) and Lower Susquehanna Valley (KMDT/KLNS) during the TAF period, with VFR favored across the North-Central Mountains (KUNV/KIPT) and Northern Tier (KBFD) where drier air has mixed into the lower levels farther behind the cold front. Periods of steadier rain are possible across the Lower Susquehanna Valley Thursday morning given elevated instability in place (HREF mean MUCAPE of 0-100 J/kg), providing some enhancement to rainfall rates with primary impact being visibilities to ~6 SM. Lightning threat is low with meager MUCAPE values favoring pockets of steadier rain vs. enhancement to thunderstorms, though isolated lightning (10-20% chance) is possible (primarily south of Mason- Dixon Line where MUCAPE values of marginally higher). Winds will trend easterly during the day on Thursday as slow- moving high pressure builds into New England, bringing cold air damming signature with cold front drifting south on the leeward side of the Alleghenies. A lull in rain activity is expected Thursday afternoon through Friday morning with the cold front shifting south of the region, followed by increasing rain chances south-to-north over the course of the day on Friday as low pressure moves across the Ohio Valley & slowly brings Mid- Atlantic frontal boundary northward as a warm front. Outlook... Fri...Restrictions likely with rain moving in from south to north, lasting into Fri night. Sat-Sun-Mon...Restrictions likely with rain. &&
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