An arctic air mass with temperatures of 10 to 20 degrees below zero spread across southeast Minnesota at the end of January. These temperatures combined with wind speeds of 10 to 15 mph to produce dangerously cold wind chills nearing 40 degrees below zero during the morning of January 31st.
Every event with a place to put it; 4 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 ARX wrote it up.
An arctic air mass with temperatures of 10 to 20 degrees below zero spread across southeast Minnesota at the end of January. These temperatures combined with wind speeds of 10 to 15 mph to produce dangerously cold wind chills nearing 40 degrees below zero during the morning of January 31st. The coldest wind chills reported were -39 during the early morning hours from mesonet stations near Byron (Dodge County) and Canton (Fillmore County).
The national radar mosaic for the moment the first event began.
4 extreme cold/wind chill. Local standard time, as filed.
Wind chill temperatures of 35 to 40 below zero occurred across Dodge County during the early morning of January 31st. The coldest wind chill of 39 below occurred at a mesonet station near Byron.
Dangerously cold wind chills occurred across Olmsted County during the early morning of January 31st. The coldest wind chill observed was 36 below zero at a mesonet station near Eyota.
Dangerously cold wind chills around 35 below were common across Mower County during the morning of January 31st.
Dangerously cold wind chill temperatures of 35 to 40 below zero occurred in parts of Fillmore County during the early morning of January 31st. The coldest observed wind chill was 39 below zero at a mesonet station near Canton.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2023Every state in 2023This day in weather historyWarnings in Minnesota, January 2023
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 2026-09-30. Each event’s entry at NCEI: 1076392, 1078996, 1078978, 1078997.