.AVIATION /00Z SUNDAY THROUGH THURSDAY/...
00z update... Confidence is increasing (80-90% probability) in 
the development of IFR to fuel alternate ceiling restrictions 
later tonight and Sunday morning across the central PA terminal 
sites. IFR ceiling bases are most probable at KBFD, KJST, and 
KAOO.

It's also appearing more likely that drier air slowly filters
into the region from the east during Sunday afternoon. At this
early vantage point, we think improving conditions will take
place first at KLNS, KMDT, and KIPT, eventually reaching KAOO, 
KUNV, KJST, and KBFD by/after 18-19z.

E-SE surface winds of 5-10 kt are expected through the day on
Sunday.

Outlook...

Mon-Thu...SHRA and PM TSRA with sub-VFR conditions possible.

&&