DES MOINES, Iowa—The National Weather Service has issued an Excessive Heat Warning, beginning today and continuing until Wednesday evening.

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
304 AM CDT Mon Aug 21 2023

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON TODAY TO
9 PM CDT WEDNESDAY...

* WHAT...An extended period of dangerously hot conditions with
  heat index values between 105 to 115.

* WHERE...Portions of central and northern Iowa.

* WHEN...From noon Monday to 9 PM CDT Wednesday.

* IMPACTS...Extreme heat and humidity will significantly
  increase the potential for heat related illnesses,
  particularly for those working or participating in outdoor
  activities.

* ADDITIONAL DETAILS...The long duration of the heat can be
  particularly hard on the very young, the elderly and those
  with medical conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

(contributed information, NWS)