Excessive Heat in St. Louis (c), Missouri

Excessive Heat August 10, 2021 – August 12, 2021 · St. Louis (c), Missouri

Injuries

What the National Weather Service wrote

Heat index values were in excess of 105 degrees for a 4 day stretch across the St. Louis Metro area. Ten heat related illnesses were reported.

The wider storm

Upper-level high pressure prevailed across the region resulting in high heat and humidity. Heat index values at 105 degrees and greater were widespread across the St. Louis metro area from August 10th through 12th. Due to 4 days of heat index values at 105 degrees or greater (August 9th through 12th), an Excessive Heat Warning was issued.

Source: NOAA Storm Events Database, event 979089. Narratives are written by the National Weather Service forecast office that issued the report.

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