Arlington and much of the D.C. region is under a Dense Fog Advisory until 2 p.m. this afternoon.
The National Weather Service says low visibility could cause hazardous driving conditions.
From the NWS:
… DENSE FOG ADVISORY NOW IN EFFECT UNTIL 2 PM EST THIS AFTERNOON…
* VISIBILITIES… ONE QUARTER MILE OR LESS AT TIMES.
* IMPACTS… AREAS OF DENSE FOG WILL CAUSE SUDDEN AND GREAT REDUCTIONS IN VISIBILITY… RESULTING IN HAZARDOUS DRIVING CONDITIONS.PRECAUTIONARY/PREPAREDNESS ACTIONS…
A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING… SLOW DOWN… USE YOUR LOW-BEAM HEADLIGHTS… AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU.