Aviation Forecasts and Information Page - NWS State College PA

.AVIATION /21Z THURSDAY THROUGH TUESDAY/...
Late afternoon update.

The widespread bands of heavy rain are mainly gone now. One
band south and east of UNV, moving to the east and southeast,
will be pushing into the MDT area shortly. Tops still on the
low side for thunder, will continue to monitor. 

Overall some updates done, based on current obs and radar
trends.

Earlier discussion below.

A fairly organized/relatively widespread area of light to 
moderate rain/showers was drifting slowly east across the
Commonwealth this afternoon, with the greatest concentration
over the eastern half of PA, just ahead of the intersection of
several low level frontal boundaries. 

Conditions for the rest of the daylight hours will continue to 
fluctuate between MVFR and IFR as this area of rain moves 
slowly East/Northeast, with cool marine air pushing into the 
Susq Valley from the Western Atlantic, and moist upslope flow 
along with cooler air aloft moving over the Western Mtns of PA 
with similar results to cigs and vsbys. The highest cigs and
best sfc vsby (mainly low end VFR) will be across South-Central
PA that will break into the warm sector then experience the 
best westerly downsloping in the wake of a weak cold front. 

MVFR CIGS will persist through dusk at most other TAF sites then
lower to IFR and LIFR as we head through the middle of tonight
and early Friday. 

IFR to MVFR cigs with numerous -SHRA will persist across the NW
Mtns and Laurel Highlands on Friday while a gradual mid to late
morning improvement to higher end MVFR and VFR will take place
across the SE half of the CWA where the best downslope component
will be found. 

Outlook...

Fri...Ocnl SHRA North and West, scattered -SHRA SE.

Sat-Mon...Still a chance of a shower.

Tue...Widespread showers expected again.

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