Continued from a previous blog:
The latest data points toward a cold rain briefly mixing with wet snowflakes mostly south of D.C. from roughly 5 P.M. to 1 A.M. It will be light and no snow accumulation is expected with the exception of some ridge tops along the Blue Ridge. In the higher elevations up to an inch is possible especially in Highland, Augusta and Nelson Counties.
The best chance for this rain/mix is along and south of Hwy 3 in Virginia and in southern Maryland starting around 5 P.M. That said, it won't take much for this precipitation to clip the D.C. metro area, but it would just cause some reduced visibilities and wet roads for a brief period of time this evening. Even the rainfall totals should be slim with this weak system (0.01"-0.10").
As a side note, don't be surprised if you witness a few flurries early Sunday morning caused by a shot of upper level energy. Neither is a big deal, and my snow excitement factor remains very low at this time - even for the extended outlook.
The bigger story today is the dropping temperatures and gusty winds. We have already hit our high temperature for the day (DCA: 62 4:12 A.M.), and the cooler air will continue to spill into town throughout the morning and midday.
Expect readings in the 40s for the majority of our Friday with northwesterly gusts up to 35 mph. The weekend looks seasonable and partly cloudy with a slight chance of a few snow flurries very early Sunday morning.