Cold Weather Advisories and Extreme Cold Warnings will be active for southern Colorado over the next 24 hours. A Cold Weather Advisory is active until 5:00 PM Monday and will be upgraded to an Extreme Cold Warning until 11:00 AM Tuesday.

In the Triangle, the criteria for a cold weather advisory is 5°, meanwhile, in the Sandhills, it is 10°. For an extreme cold watch or warning, the criteria is -5° in the Triangle, and 0° in the Sandhills. Watches would be issued farther in advance than warnings would be, just like with hurricanes or tornadoes.

In Grand Rapids, a cold weather advisory is issued when there is forecasted three or more hours of temperatures or wind chill (the “feels-like” temperature) at -15 degrees or colder. An extreme cold warning will be issued when there is forecasted three or more hours of temperatures or wind chill at -25 degrees or colder.