1 heavy snow, as filed by the National Weather Service.
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 Great Falls, MT wrote its last area forecast discussion before the first event at Apr 2, 9:30 AM MST, 1 hour 30 minutes earlier.
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 930 AM MST MON APR 2 2001 ...UPDATES PLANNED FOR ZONES AND STATE... OF COURSE MAIN FOCUS IS ON WHAT TO DO WITH THE WINTER STORM WARNING THAT IS OUT FOR LATER THIS AFTERNOON AND TONIGHT. LATEST ETA AND NGM HAVE COME INTO A LITTLE BETTER AGREEMENT ON DETAILS THOUGH THERE ARE STILL SOME DIFFERENCES. ONE VORTICITY CENTER OVER SW MT WILL SPREAD N DURING THE DAY BUT THERE MAY NOT BE A WHOLE LOT OF PRECIPITATION WITH IT. THEN ANOTHER CENTER OVER SW MT IS FORECAST TO DEVELOP THIS AFTERNOON AND INTENSIFY AS IT MOVES INTO CENTRAL MT BY 12Z. THERE WILL ALSO BE ANOTHER VORTICITY LOBE OVER FAR NRN MT. SURFACE LOW IS FORECAST TO DEVELOP OVER N CENTRAL MT BY 12Z. LATEST NGM/ETA HAVE HIGHER OMEGAS AND QPF VALUES OVER THE FAR NRN ZONES. HIGHEST QPF VALUES ARE OVER THE NRN ROCKY MOUNTAIN FRONT WHERE LOW LEVEL UPSLOPE WILL BE BEST AND THERE WILL BE BETTER ISENTROPIC LIFT. EVEN THOUGH HAVE NOT SEEN THE LATEST AVN WILL GO AHEAD AND MAKE SOME MAJOR CHANGES TO THE WINTER STORM WARNING. WILL DROP IT OVER SW MT. A GRAY AREA IS CENTRAL MT WHERE LATEST ETA/NGM RUNS INDICATE THERE COULD SOME DOWNSLOPE. WILL LEAVE IN WARNING BUT TONE DOWN SNOW AMOUNTS. NEAR AND N OF U.S. ROUTE 2 CURRENT WARNING LOOKS GOOD BUT WILL PROBABLY CONTINUE IT INTO TUE MORNING. BASED ON LATEST QPF AMOUNTS AND OTHER MODEL DATA WILL BEEF UP SNOW AMOUNTS FOR THE ROCKY MOUNTAIN FRONT. FOR TODAY WILL RAISE MOST FORECAST HIGH TEMPERATURES AND LOWER SOME POPS. BLANK EXTENDED...LATEST MRF INDICATES NOT MUCH CHANGE FROM PRVIOUS RUN. WILL NOT MAKE ANY SIGNIFICANT CHANGES TO CURRENT EXTENDED PACKAGE. SOUTHWEST FLOW ALOFT DAY 3 WITH WEAK UPSLOPE GRADIENTS. WEAK UPPER TROF MOVES ACROSS NORTHERN PORTION OF CWA DAY 4 FOR ISOLATED SHOWERS. WEAK DOWNSLOPE DEVELOPS DAY 5 FOR DRY CONDITIONS. UPPER TROF APPROACHES CWA FROM THE WEST DAY 6 WITH A BETTER CHANCE OF SHOWERS DAY 7. EMANUEL CCF NUMBERS GTF SJ 040/024 035/020 038 08+86 CTB SJ 035/022 030/016 035 08+87 HLN SJ 042/025 038/021 042 08975 BZN SJ 040/022 036/018 040 08974 WEY SJ 038/015 032/010 034 08+64 DLN SJ 042/024 038/022 040 08644 HVR SJ 040/025 035/022 038 08897 LWT SJ 040/026 035/018 037 08886
1 heavy snow. Local standard time, as filed.
14 inches snowfall reported near town of East Glacier (National Park Service office in Glacier National Park).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2001Every state in 2001This day in weather historyWarnings in Montana, April 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: 5241610.