Statement as of 3:11 AM EST on February 21, 2018
Expires 6:00 AM EST on February 21, 2018
... Dense fog advisory now in effect until 6 am EST early this
* visibilities... one quarter mile or less at times.
* Timing... through early this morning.
* Impacts... limited visibilities will make travel very difficult.
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