Area Forecast Discussion
Issued by NWS State College, PA
Issued by NWS State College, PA
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117 FXUS61 KCTP 091854 AFDCTP Area Forecast Discussion National Weather Service State College PA 254 PM EDT Sun Jun 9 2024 .SYNOPSIS... *This afternoon will be pleasant albeit breezy with northwest winds and a mix of clouds and sun. *Isolated showers or thundershowers may develop across the northern tier this evening ahead of a reinforcing shot of cold air, which will keep highs 5 to 15F below average on Monday. *Temperatures will be on the rise through the end of the week as high pressure brings a stretch of rain-free weather with low humidity, light winds, and plenty of sunshine. && .NEAR TERM /UNTIL 11 PM THIS EVENING/... Skies will be partly sunny across central PA for the remainder of the afternoon. An approaching vort max this evening will bring a chance for showers and thundershowers (40 pct PoPs) across the northern tier of PA mainly from 6-11PM. Otherwise today will be breezy and relatively cool with highs ranging from the mid 60s in the north to near 80 in the southern tier. && .SHORT TERM /11 PM THIS EVENING THROUGH WEDNESDAY NIGHT/... A reinforcing shot of cold air will be ushered in overnight behind a secondary cold front, allowing temperatures to drop into the upper 40s in the northern tier and the upper 50s in the southeast. On Monday, the approach of a potent shortwave aloft will support more clouds than sun and isolated showers or sprinkles across the northern tier. Monday will be the coldest day of the week as temperatures struggle to make it out of the 50s in the northern tier. High temperatures will be -5F to -15F compared to average for this time of year. Another chilly night is in store for Monday night with lows ranging from the mid 40s at higher elevations in the Laurel Highlands and northwest mountains to mid 50s in the Lower Susquehanna Valley. Upper level troughiness over the northeastern United States will keep temperatures below normal through Wednesday. Tuesday and Wednesday do look dry as a lack of moisture will make it difficult for showers to form, despite the upper level low overhead. && .LONG TERM /THURSDAY THROUGH SUNDAY/... Temperatures will be on a warning trend for Thu and Fri, with high temps making a run at the low 90s across the south by Friday. There could also be some showers and t-storms by Friday, as a cold front drops southeastward across the area by Friday afternoon. Low level moisture appears to still be limited at this point. However, past experience is that such a pattern provides the potential for isolated strong storms if moisture gets advected into the area. Given the variance in guidance that far out moisture trends will need to be monitored as the week progresses. && .AVIATION /19Z SUNDAY THROUGH FRIDAY/... All TAF sites are VFR as of 18z Sun. Expect continued fair weather cu with bases near 5000 ft and wind gusts up to 25 kts from 290-310 deg this afternoon. An approaching vort max this evening will bring a chance for showers and thundershowers across the northern tier of PA mainly from 22z Sat to 03z Sun, potentially impacting BFD. A secondary sfc cold front will bring a reinforcing shot of cooler air and considerable cloudiness late tonight into Monday. There is a high chance (~90%) that ceilings over the western highlands (BFD, JST) will degrade to at least MVFR by daybreak Monday, with a ~40-50% chance of IFR ceilings. Restrictions will likely last through much of the day Monday. Farther to the south and east, the central mtns (AOO, UNV, IPT) could see a period of MVFR cigs, while the Lower Susq Valley (MDT, LNS) should remain predominantly VFR through the TAF period. Outlook... Mon...Spotty showers and MVFR cigs likely, mainly north. Tue-Thu...Predominantly VFR w/ no sig wx expected. Fri...Restrictions poss with if afternoon/evening convection develops. && .CTP WATCHES/WARNINGS/ADVISORIES... None. && $$ SYNOPSIS...Banghoff/Colbert NEAR TERM...Banghoff/Colbert SHORT TERM...Banghoff/Colbert LONG TERM...Lambert/Bowen AVIATION...Guseman/Evanego