Extreme Cold Warning issued January 21 at 2:33AM EST until January 23 at 10:00AM EST by NWS Baltimore MD/Washington DC

* WHAT…An extended period of temperatures up to 30 degrees
below normal. Dangerously cold wind chills as low as 20 to 30
degrees below zero expected.

* WHERE…In Maryland, Garrett and Extreme Western Allegany
Counties. In Virginia, Western Highland and Eastern Highland
Counties, and Northern Virginia Blue Ridge and Central
Virginia Blue Ridge. In West Virginia, Western Grant, Western
Mineral, Western Pendleton and Eastern Pendleton Counties.

* WHEN…Until 10 AM EST Thursday.

* IMPACTS…The dangerously cold wind chills as low as 25 below
zero could cause frostbite on exposed skin in as little as 30
minutes. An extended period of freezing temperatures could
cause ruptured water pipes.