The NWS advisory notes that the area will see less than one-tenth of an inch of precipitation on the roads, ending by mid-morning. Temperatures will be below freezing until about 9 a.m. and untreated surfaces will be icy and slippery, particularly during the morning commute.
Officials said to be on the lookout for slow-moving vehicles that will be pre-treating roads in the area during evening rush-hour on Thursday.
The NWS cautions drivers to use caution while driving Thursday evening and throughout Friday.
There has been no word yet from Fairfax County Public Schools as to whether this advisory will impact school on Friday.
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