Extreme Cold Warning issued January 20 at 12:39AM MST until January 20 at 11:00AM MST by NWS Rapid City SD

* WHAT…For the Extreme Cold Warning, dangerously cold wind chills
as low as 50 below zero. For the Cold Weather Advisory, very cold
wind chills as low as 40 below zero expected.

* WHERE…Harding, Northern Perkins, Southern Perkins, and Ziebach.

* WHEN…For the Extreme Cold Warning, until 11 AM MST this morning.
For the Cold Weather Advisory, from 11 AM this morning to 8 AM MST
Tuesday.

* IMPACTS…The dangerously cold wind chills as low as 50 below zero
could cause frostbite on exposed skin in as little as 10 minutes.