Severe Thunderstorm Watch In Effect Until 10 PM

The National Weather Service in Sterling, Va. has issued a Severe Thunderstorm Watch for the region until 10:00 PM.

The areas under the watch include Frederick, Carroll, Howard and Montgomery Counties in Maryland, and Loudon County, Virginia.

The primary threats from a severe thunderstorm could be damaging wind gusts and large hail.  The Weather Service says an isolated tornado cannot be ruled out.