Excessive Heat — Brown, Minnesota

2023-08-22 · Brown, Minnesota

Event narrative

Warm environmental temperatures in the mid 90s combined with high dewpoint values in the upper 70s caused high heat indices exceeding 105F for approximately four hours. The AWOS station in New Ulm, MN recorded an apparent temperature of 110F at 4:30 PM (CST).

Wider weather episode

Excessive Heat occurred through much of Central and Southern MN through the afternoon of August 22nd, 2023. A warm front stalled over the region which allowed for a continued supply of warm moist air into the region. Highs ranged in the 90s to low 100s, dew points in the 70s, with heat indices ranging between 105-120 degrees.

Some of the highest apparent temperatures recorded include:

Princeton (Sherburne): 119F

Madison (Lac Qui Parle): 118F

Crystal (Hennepin): 117F

Fairmont (Martin): 117F

Buffalo (Wright): 116F

Granite Falls (Yellow Medicine): 116F

St. Paul (Ramsey): 116F

St. James (Watonwan): 115F

Mankato (Blue Earth): 115F

Blaine (Anoka): 115F.

Source: NOAA Storm Events Database, event_id 1135690. Narrative written by the NWS forecast office that issued the report.