1 thunderstorm wind, as filed by the National Weather Service.
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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 Duluth, MN wrote its last area forecast discussion before the first event at May 15, 1:00 PM CST, 3 hours 34 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DULUTH MN 200 PM CDT TUE MAY 15 2001 THE OBVIOUS CONCERN FOR 1ST PD IS PSBLTY OF SVR THIS EVE. SWODY1 HAS DETAILS. IN SHORT...LI/S DECRS TO MINUS 8 OR LESS...DEPENDING ON WHICH CALCULATION IS USED...BY 00Z. CAPES EXCEED 4500 J/KG. INCR IN SFC TEMPS AND DPTS HAS BEEN RETARDED SOMEWHAT BY MRNG ST LYR...BUT THAT IS GONE ENTIRELY IN THE S AND JUST ABOUT GONE IN THE N...ALTHO AC DECK NOW MOVG IN. BIG QUES IS STRENGTH OF THE CAP. ETA/AVN 700 MB TEMPS REMAIN PLUS 8C OR BETTER UNTIL CFROPA THIS EVE...WHICH IS MARGINAL. ETA GRID PT SOUNDINGS SHOW LOLVL INVRN ERODING BY 00Z EXCEPT AT DLH WHICH MAY STAY UNDER THE INFLUENCE OF THE MARINE LYR. ANY SVR STORMS MAY HAVE TO WAIT FOR THE ADDITIONAL LIFT PROVIDED BY THE CFNT TO BREAK THE CAP AND TAKE OFF. ALL-IN-ALL...THE SLGT RISK ISSUED BY SPC SEEMS RSNBL FOR NOW...AND WILL MENTION PSBL SVR IN ZFP. BEYOND THAT...MODELS AGREE QUITE WELL ON A PERIOD OF TEMPORARY RIDGING ON WED BEFORE APPROACH OF NXT SYSTEM WED NGT/THU MRNG...AND DO NOT PLAN MUCH CHG FOR THESE PERIODS. CAA KICKS IN AFT 06Z OR SO BUT IS SHORT LIVED. GUIDANCE LOWS AT OR SLIGHTLY BLO THIS MORNINGS LOWS LOOKS RSNBL. WAA ON WED LIKEWISE WILL BE WK AND SHORT LIVED AHD NXT FNTL BNDRY...BUT FEWER CLDS SHOULD MAKE MID 70S REACHABLE...MAYBE 80 IN SRN TIER...AND THIS IS ALREADY DEPICTED IN CURRENT ZONE SET. .DLH...NONE. ERF
The Duluth radar (KDLH), 167 km away, was scanning. The volume nearest the first event began at 22:32 UTC.
1 thunderstorm wind. Local standard time, as filed.
Several trees were blown down, and there was damage to a garage. The wind speed is estimated.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2001Every state in 2001This day in weather historyWarnings in Minnesota, May 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: 5246816.