Værmelding for Iwan Number 4 Dam

Cold Weather Advisory issued January 21 at 1:17AM MST until January 21 at 8:00AM MST by NWS Rapid City SD* WHAT...Very cold wind chills of 15 to 25 below zero.* WHERE...Portions of western and south central South Dakota andnortheast Wyoming.* WHEN...Until 8 AM MST /9 AM CST/ this morning.* IMPACTS...The dangerously cold wind chills as low as 25 below zerocould cause frostbite on exposed skin in as little as 10 minutes.Use caution while traveling outside. Wear appropriate clothing, ahat, and gloves.

National Weather Service