Areas of dense fog have formed this evening with visibility less than one-quarter mile. Fog should improve some when steadier rain arrives later tonight. Be cautious and use low-beam headlights if traveling this evening. pic.twitter.com/WFGtJjmhUd
— NWS DC/Baltimore (@NWS_BaltWash) December 13, 2019
from Twitter https://twitter.com/midatlanticwx