Excessive Heat — Trempealeau, Wisconsin

2024-08-26 · Trempealeau, Wisconsin

Event narrative

Anomalously warm air temperatures and high humidity allowed the heat index to reach between 106 to 113 degrees on August 26th across Trempealeau County. Heat index values reached 113 degrees at the Wisconsin Department of Transportation observation station south of Arcadia.

Wider weather episode

After a relatively mild summer, a period of excessive heat impacted much of the region prompting air temperatures to reach well above 90 degrees during the afternoon on August 26th. This combined with dewpoints as high as 80 degrees in some locations allowed for heat indices to climb above 110 degrees on August 26th.

Source: NOAA Storm Events Database, event_id 1213419. Narrative written by the NWS forecast office that issued the report.