1 tornado, as filed by the National Weather Service.
Every event with a place to put it. 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 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 Twin Cities, MN wrote its last area forecast discussion before the first event at Sep 9, 2:00 PM CST, 3 hours 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 300 PM CDT SUN SEP 9 2001 INSTABILITY SHOWERS CONTINUE OVER CENTRAL MN SUPPORTED BY LEFT EXIT OF STRONG JET...EXTENDING INTO WRN CANADA. THE ASSOCIATED SHORT WAVE TROUGH SHOULD MOVE ACROSS NRN MN OVERNIGHT. THERE SHOULD BE ENOUGH LIFT TO SUPPORT SHOWERS IN NERN PORTIONS OF THE FORECAST AREA PAST SUNSET...OTHERWISE MOST ACTIVITY SHOULD DIE OUT WITH DIURNAL INSTABILITY. SOME COLD ADVECTION WITH THE PASSAGE OF THE TROUGH...BUT THERE IS ENOUGH WIND TO KEEP TEMPERATURES UP A LITTLE. MONDAY LOOKS DRY BUT SOME WIND WITH PRESSURE RISES FOLLOWING THE TROUGH. ANOTHER SHORT WAVE TROUGH IN THE WESTERLIES NEAR THE CANADIAN BORDER GENERATES SOME WARM ADVECTION FOR MONDAY NIGHT AND TUESDAY WITH THE ETA BEING THE STRONGEST. SOME SHOWERS WILL BE MENTIONED IN THE NRN ZONES MON NIGHT. SOME UPPER RIDGING DEVELOPS INTO THE LATER PART OF THE WEEK WITH THE MODELS EJECTING A TROUGH FROM THE WEST BY THE WEEKEND. .MSP...NONE. SCOTT
The Minneapolis radar (KMPX), 32 km away, was scanning. The volume nearest the first event began at 23:56 UTC.
1 tornado. Local standard time, as filed.
Tornado touched down just south of Crystal Lake, or just to the east of I-35 and County Road 46. A few trees toppled, patio furniture tossed around. Small amount of siding ripped off house.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2001Every state in 2001This day in weather historyThe tornado archive for Minnesota, 2001Warnings in Minnesota, September 2001
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 2026-09-24. Each event’s entry at NCEI: 5269691.