The storm is expected to disrupt travel across major highways and interstates, making conditions treacherous for drivers.

The map below uses a yellow line (and contours ... Temperatures are right around freezing (except above freezing around downtown Washington), with rain and freezing rain falling.

Heavy snow is forecasted to start this afternoon and continue into the night, potentially bringing significant accumulation to the Washington, D.C. region.

The Cascades will see heavy snowfall with up to a foot of accumulation into Saturday, impacting mountain travel.