Tuesday Afternoon Snow Thump Should Produce First Widespread Accumulation of 2020 in DC Area

A quick four to five hour thump of heavy, wet snow will overspread the entire Washington Area from southwest to northeast between roughly 2pm and 7pm.  Precipitation may start out as some sleet and rain but should change over to heavy snow with snowfall rates of a half-inch to possibly one-inch per hour. The recent warm temperatures and marginal surface temperatures (middle 30s) will prevent every flake from sticking. With that said, the afternoon rush hour will feature slick spots on untreated secondary roadways, especially outside of the urban heat-island of downtown Washington.

The latest North American Model (NAM) shows snow rapidly developing and moving across the DC Region between 17z (12pm) and 00z (7pm).

Washington Region Potential Snowfall Accumulation

Enjoy winter’s gasp as a massive warm up is in store for the upcoming weekend as an upper-level ridge builds across the eastern seaboard with high temperatures flirting with the lower 70s!