Timing this Afternoon’s Rain, Snow and Sleet

A mix of rain and sleet will overspread the Metropolitan DC Area between 3PM and 6PM.  Locations along and north of interstate 66 in Virginia and route 50 in Maryland will change over to snow for several hours before ending as a mix of rain, sleet and snow. Further south, a brief period of snow and sleet is possible before a change over to rain.  The northern and western outer suburbs will receive the longest period of snow before the precipitation tapers off and ends between 8 and 10 PM.

Here is the latest snowfall potential from the Weather Prediction Center:

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Winter Wonderland for Parts of the Region Saturday: Accumulation Map Posted

Snow will break out across the DC Region on Saturday afternoon, mixing with sleet and changing over to Rain south and east of Washington.  Wet Snow should continue across our northern and western suburbs through much of the event with one to two inches of accumulation possible.  The ground is warm and that will definitely cut back on accumulation potential with this event.  This will be a very wet snow and should stick to trees and elevated surfaces pretty well. Accumulations of up to a half-foot are possible across the highest elevations of the Blue Ridge and across northern portions of Frederick and Carroll counties in Maryland.

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Timing Tonight’s Wet Snow

 

The latest High Resolution Rapid Refresh (HRRR) model showing rain changing over to snow late tonight. Image courtesy, WxBell

 

Steady rain will continue to fall across the Washington Metropolitan Area tonight, gradually mixing with and changing over to snow from north to south.  

A period of moderate snow is likely after 3AM across northern Maryland and around 4/5 AM along the Interstate 66 corridor in northern Virginia, DC and route 50 in Maryland.  

A slushy accumulation of less than an inch is possible on grassy surfaces.