.AVIATION /02Z SATURDAY THROUGH WEDNESDAY/... Any residual shower and thunderstorm activity should come to end after 01z. VFR conditions will prevail until then with sub- VFR cigs and vsbys likely developing overnight especially at terminals east of the Blue Ridge. This is due largely in part to east to southeast onshore flow which will promote low clouds across the corridor and back toward a line that extends from HGR/MRB south to KCHO. Current CAMs suggest good agreement on IFR conditions impacting KDCA, KCHO, KIAD, and KMRB late tonight into early Saturday morning. There is slightly lower confidence at KBWI and KMTN. Highest confidence for fog is KMRB and KSHD where skies look to clear for a period of time before passing clouds fill in. Some of this fog will be locally dense with the greatest coverage of fog tied to the Alleghenies, Catoctins, and portions of the Shenandoah Valley. Some light drizzle and mist also cannot be ruled out at terminals east of the Blue Ridge given the marine onshore influence overhead. Ceilings and visibility should improve by mid Saturday morning. Convective chances Saturday decrease even further amongst the terminals and should be relegated well west of the corridor. A spotty afternoon shower or t-storm cannot be ruled at KCHO and KMRB, but confidence is low (20-30 percent). VFR conditions should prevail for most with light southeast winds less than 10kts. There's less of a low cloud and fog signal Saturday night, although MRB and perhaps CHO could still have some fog develop. A cold front will slowly approach Sunday into Sunday night. Relatively speaking, MRB has the greatest chance for thunderstorms during this period, but even that is a 20 to 30 percent chance. Prevailing VFR conditions are expected Monday and Tuesday with the exception being during precipitation. Daily rain showers and a possible thunderstorm are forecast both days, although coverage will be limited. Northeast winds on Monday shift to southeast on Tuesday, blowing 5 to 10 knots each afternoon. Additional rain chances are likely Wednesday into Thursday as a stronger front cross the region. AVIATION...ADS/AVS/EST Update as of: 1218 AM EDT Sat Aug 16 2025