Excessive Heat Warning issued August 21 at 9:20AM MDT until August 23 at 9:00PM MDT by NWS

…EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 10 PM CDT WEDNESDAY… * WHAT…Dangerously hot conditions with heat index values up to 115 expected. Overnight heat index values between 75 and 80 degrees. * WHERE…Portions of northwest and west central Iowa, southwest