Weather Alert Watch
Severe Extreme Heat Warning

Extreme Heat Warning for Iowa; Johnson; Cedar +18 more

What: Dangerously hot and humid conditions with multiple days of heat index values of 100 to 110 expected, along with nighttime lows not falling below the mid to upper 70s. Impacts: Heat related illnesses increase significantly during extreme heat and high...

IA, IL +1Iowa; Johnson; Cedar; Muscatine; Scott; Keokuk; Washington; Louisa; Jefferson; Henry; Des Moines; Van Buren; Lee; Rock Island; Mercer; Henderson; Warren; Hancock; McDonough; Scotland; Clark

Official alert brief

WHAT

Dangerously hot and humid conditions with multiple days of heat index values of 100 to 110 expected, along with nighttime lows not falling below the mid to upper 70s.

WHERE

Portions of northwest and west central Illinois, east central and southeast Iowa, and northeast Missouri.

WHEN

Until 10 PM CDT Thursday.

IMPACTS

Heat related illnesses increase significantly during extreme heat and high humidity events.

Instructions

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.