NWS All NOAA
State College, PA
Weather Forecast Office
.AVIATION /18Z TUESDAY THROUGH SUNDAY/... Mainly clear skies in the south today with a few lingering low clouds across the northern tier of PA will keep flight conditions VFR into this evening. A few areas of low ceilings and fog could develop tonight over the eastern terminals of IPT, MDT, and LNS. Latest GFS LAMP guidance does not depict any degradation of flight conditions, but REFS ensemble guidance is showing more confidence (~60%) in MVFR to IFR conditions after 09Z. Any fog and clouds that do develop should lift shortly after sunrise with most of Wednesday experiencing VFR after 14Z. The next chance for impactful precipitation will arrive Wednesday evening (NW) and overnight into Thursday across the Central and Eastern part of the CWA. Low pressure will track NE from the Central Plains and reach the Upper Great Lakes Wednesday evening. Strengthening southerly flow ahead of the low's southward trailing cold front will create a moderately gusty southerly flow over the western half of PA Wednesday and Wed night with a 12-15 hour period of LLWS later Wednesday into the mid morning hours Tuesday. Outlook... Wed-Thu...Rain showers, especially in the PM hours on Wednesday and continuing into Thursday. Sub-VFR conditions become more likely in showers. Fri-Sat...Scattered to isolated rain, cloudy conditions and sub VFR ceilings possible. Sun...Mainly VFR, isolated rain in NW PA. &&
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