Chaska, MN Tornado History — 113 Tornadoes Since 1950
How many tornadoes has Chaska, MN had?
Chaska has had 113 tornadoes on record within 25 miles since 1950, including 9 strong to violent (EF3+) tornadoes.
When was the most recent tornado near Chaska?
The most recent tornado within 25 miles of Chaska was an EF0 on June 28, 2025.
When is tornado season in Chaska?
May is historically the peak month for tornadoes near Chaska, with 31 on record. April through June account for 60 of the 113 tornadoes on record near Chaska.
At a Glance
Recent Tornado Activity Near Chaska
The last 20 years of confirmed tornadoes within 25 miles — 41 total, averaging 2.0 per year over this window.
What storm spotters reported near Chaska
One local storm report has been filed within 25 miles of Chaska and since confirmed into the NOAA archive, the earliest on June 28, 2025 and the most recent on June 28, 2025. It is already counted in the Chaska totals above; quoted below is the narrative the reporting office filed at the time.
Corrects previous tornado report from 1 NNW Victoria. TDS confirmed via radar. Trees were reported blocking Hwy 7 completely from Mnnewashta Pkwy to Rolling Acres Rd. (MPX)
Source: National Weather Service and trained-spotter local storm reports, relayed by the NOAA Storm Prediction Center.
Tornadoes by Decade
Tornadoes by Enhanced Fujita Rating
F0–F5 ratings (pre-2007) are grouped with their EF equivalents. The Enhanced Fujita scale replaced the original Fujita scale in February 2007.
Tornadoes by Month
Casualties on Record Near Chaska
23 fatalities have been recorded within 25 miles of Chaska since 1950, across 10 events. 978 injuries have been reported across all events. 1965 was the deadliest year on record near Chaska.
The deadliest single event was an F4 on May 6, 1965, which caused 6 fatalities along a 17.3-mile track.
Notable Tornadoes Near Chaska
What the record shows near Chaska
The 1990s were the busiest decade near Chaska, with 21 of the 113 confirmed tornadoes within 25 miles; the 2020s have produced 20 so far. The Chaska record runs from the 1950s to today.
Of the tornadoes rated near Chaska, 94 reached EF0 or EF1 and 19 reached EF2 or stronger. The most intense on record near Chaska is rated EF4, of which 5 are logged.
Across the last 20 years Chaska has averaged 2.0 confirmed tornadoes a year within 25 miles, 41 in total. 2012 was the busiest of them with 5, and 7 of those years passed with none at all.