1 heavy snow, as filed by the National Weather Service.
Every event with a place to put it; 1 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 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 1, 3:30 PM CST, 2 hours 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DULUTH MN 330 PM CST THU FEB 1 2001 FORECAST CONCERN TONIGHT WILL BE LAKE EFFECT SNOW...THEN TEMPERATURES. MODELS WERE IN GENERAL AGREEMENT...THE AVN WAS A LITTLE QUICKER WITH THE ISENTROPIC LIFT ON FRIDAY. MODELS HAVE SLOWED ON THIS FEATURE OVER THE LAST RUN AND WILL GO WITH THE SLIGHTLY SLOWER ETA FOR DETAILS. TROUGH MOVING SLOWLY DOWN THE LAKE...LES TAKING ITS TIME DEVELOPING. 700MB LOW SLIDING ACROSS NORTHERN WISCONSIN CREATING SHEAR AS KDLH VWP SHOWING EAST FLOW AT THAT LEVEL...WITH NORTH TO NORTHEAST FLOW AT LOWER LEVELS. 700MB LOW MOVES OFF THIS EVENING AND SURFACE TROUGH MOVES THROUGH...SO WIND SHOULD LINE UP FOR MORE ORGANIZED SNOW SHOWER DEVELOPMENT. DELTA-T/S REMAIN AT 20-22 OVERNIGHT WITH INVERSION HEIGHTS INITIALLY ABOVE 3800 FEET. SOME ADDED LIFT WITH LOW LEVEL CONVERGENCE WITH TROUGH AND WEAK OMEGA WILL ENHANCE SNOW BANDS SOME. BY LATE EVENING SUBSIDENCE TAKES OVER WITH LOW LEVEL DIVERGENCE. THIS SCENARIO WILL SUGGEST LOWER SNOW AMOUNTS THAN CURRENTLY FORECAST... BUT STILL AROUND WARNING CRITERIA. AFTER COORDINATING WITH MQT AND GRB...WILL KEEP WARNING GOING...BUT TRIM AMOUNTS SOME. SNOW WILL TAPER OFF LATE TONIGHT AND END FRIDAY MORNING. ELSEWHERE...SKIES TO CLEAR AND TEMPERATURES WILL PLUMMET. AS SURFACE RIDGE MOVES OVER...WINDS TO BECOME LIGHT AND LOW DAYTIME HIGHS WILL ALLOW A QUICK DROP OFF. SHOT OF ISENTROPIC LIFT MOVES EAST FRIDAY AND WILL BRING CHANCE FOR LIGHT SNOW WITH IT. BEST CHANCE FOR ANY PRECIP WILL BE ACROSS THE WESTERN ZONES. WENT AT OR BELOW GUIDANCE LOWS TONIGHT...AND GENERALLY FOLLOWED AFTER. COORD WITH MQT AND GRB. .DLH...LAKE SNOW WARNING TONIGHT WIZ002-004. MELDE
The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
Up to 7 inches of lake effect snow fell at Hurley in northern Iron County.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2001Every state in 2001This day in weather historyWarnings in Wisconsin, February 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: 5234676.