Cold high pressure remained over the Upper Midwest the night of the 12th into the 13th. This resulted in light winds and excellent radiational cooling conditions allowing overnight lows to plummet.
Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS DLH wrote it up.
Cold high pressure remained over the Upper Midwest the night of the 12th into the 13th. This resulted in light winds and excellent radiational cooling conditions allowing overnight lows to plummet. While not as cold as the previous night, apparent temperature values in the -20 to -40F range were again common across northeastern Minnesota. A few locations did fall below -40F for brief periods when light winds occurred resulting in apparent temperatures as low as -46F.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Duluth, MN wrote its last area forecast discussion before the first event at Feb 12, 10:55 PM CST, 1 hour 5 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
3 extreme cold/wind chill. Local standard time, as filed.
Wind chills as low as -46F were reported in the county.
Wind chills as low as -40F were reported in the county.
Wind chills as low as -41F were reported in the county.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2025Every state in 2025This day in weather historyWarnings in Minnesota, February 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1226989, 1226990, 1226991.