Uyarılar, Jasper Post Office (historical)

Extreme Cold Warning issued January 20 at 9:05PM CST until January 21 at 12:00PM CST by NWS Des Moines IA * WHAT...Dangerously cold wind chills of 30 to 35 below zero. * WHERE...The northern half of Iowa. * WHEN...Until noon CST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. * ADDITIONAL DETAILS...Wind chill values will rise quickly late Tuesday morning and by afternoon wind chills of 5 to 15 below zero will be common. Dress in layers including a hat, face mask, and gloves if you must go outside.