UPDATE: Sioux Falls Excessive Heat Warning Canceled

UPDATE 08/24/2023 2:20 PM

The National Weather Service has CANCELED the Excessive Heat Warning for much of eastern South Dakota including Sioux Falls.

"Cloud cover and widely scattered showers have lowered temperatures enough to end the risk of excessive heat this afternoon. Heat index values in the lower to middle 90s may still be possible, so caution should continue to be exercised through
early evening."

MNZ080-081-089-090-098-SDZ050-059>062-242030-
/O.CAN.KFSD.EH.W.0003.000000T0000Z-230825T0000Z/
Murray-Cottonwood-Nobles-Jackson-Rock-Gregory-Davison-Hanson-
McCook-Minnehaha-
Including the cities of Slayton, Fulda, Windom, Mountain Lake,
Worthington, Jackson, Lakefield, Luverne, Gregory, Burke,
Mitchell, Alexandria, Emery, Salem, Canistota, Bridgewater,
Montrose, and Sioux Falls
220 PM CDT Thu Aug 24 2023

...EXCESSIVE HEAT WARNING IS CANCELLED...

Cloud cover and widely scattered showers have lowered
temperatures enough to end the risk of excessive heat this
afternoon. Heat index values in the lower to middle 90s may still
be possible, so caution should continue to be exercised through
early evening.

Temperatures into the 100s this week combined with very humid conditions has prompted the National Weather Service to EXTEND the Excessive Heat Warning for much of eastern South Dakota including Sioux Falls, now in effect through Thursday evening (Aug 24, 2023).

"Near record or record-breaking heat is possible for many locations during this heat wave. High humidity levels will provide little relief at night with temperatures only falling into the 70s," The National Weather Service says.

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TIPS: What is Heat Stroke and How to Prevent it?

240 PM CDT Tue Aug 22 2023

...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 7 PM CDT THURSDAY...

* WHAT...Dangerously hot conditions with heat index values up to
  115. Overnight heat index index values remain near to above 75
  degrees.

* WHERE...Portions of northwest and west central Iowa, southwest
  Minnesota, northeast Nebraska and south central and southeast
  South Dakota.

* WHEN...Until 7 PM CDT Thursday.

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

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.