Washington Severe Watches & Warnings NOAA Weather Radio

... Winter Storm Warning remains in effect from 4 am Thursday to
4 am EST Friday... 

* what... heavy mixed precipitation expected. Total sleet and snow
  accumulation of 2 to 5 inches, and ice glaze accumulations of
  one-quarter inch expected. Elevations above 2000 feet could see
  ice accumulations exceeding one-half inch.

* Where... portions of north central and western Maryland,
  northwest Virginia and eastern and Panhandle West Virginia.

* When... wintry precipitation will start between 4 and 6 am EST 
  tonight, and continue through 4 am EST Friday.

* Additional details... power outages and tree damage are likely
  due to the ice. Travel could be nearly extremely difficult. The
  hazardous conditions could impact the Thursday morning and
  evening commute. 

Precautionary/preparedness actions... 

Be very careful if you venture outside tomorrow. Watch your  
first few steps in particular as your step or path may be coated 
with ice.

A Winter Storm Warning means significant amounts of snow, sleet 
and ice will make travel very hazardous or impossible. 

The latest Road conditions for the state you are calling from can
be obtained by calling 5 1 1.