1 thunderstorm wind, 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 Great Falls, MT wrote its last area forecast discussion before the first event at Jul 16, 2:00 PM MST, 1 hour 15 minutes earlier.
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 300 PM MDT MON JUL 16 2001 THE PATTERN IS QUITE SIMILAR TO THE PAST FEW DAYS. LOW PRESSURE CENTERED OVER WA AND BRITISH COLUMBIA...AND A TROF EXTENDING DOWN ACROSS THE PAC NW. MOST OF THE INDICES LOOK A LITTLE MORE THREATENING THAN YESTERDAY...AND CERTAINLY THE WIND SHEAR PATTERN IS QUITE A BIT BETTER FOR SEVERE WEATHER THAN YESTERDAY. MOST IMPORTANTLY...A SHORT WAVE PUSHES THRU LATER THIS AFTERNOON AND EVENING...WITH AN ASSOCIATED SURFACE FRONT. WATCH BOX 559 HAS ALREADY BEEN ISSUED FOR THE ERN CWA OF MSO AND MOST OF OUR CWA. TUESDAY ONWARD NOT TOO MUCH CHANGE GOING ON. SURFACE TEMPS SHOULD TREND A LITTLE COOLER AS CAA CONTINUES...BUT AT THE SAME TIME THE HEIGHTS ALOFT WILL BE DROPPING. THUS AIRMASS REMAINS RELATIVELY UNSETTLED. ZELZER EXTENDED...SOME DIFFERENCE AMONG THE MODELS...BUT DO KEEP UPPER TROUGH OVER PACIFIC NORTHWEST FOR CONTINUED MOIST AND UNSTABLE SOUTHWEST FLOW FOR DAYS 3 AND 4. UPPER TROUGH THEN SLITS BY DAY 5 WITH THE NORTHERN BRANCH MOVING THROUGH AREA. WEAK UPPER RIDGE BUILDS BY DAY 6 AND 7 FOR DRY AND WARMER WEATHER. TEMPERATURES WILL BE A LITTLE BELOW NORMAL WITH AT OR A LITTLE ABOVE NORMAL PRECIPITATION. CCF NUMBERS GTF EE 050 078 048 074 048 135122 CTB EE 048 072 046 070 045 135122 HLN EE 050 075 048 075 048 135222 BZN EE 047 075 047 073 045 136323 WEY PEE 052 074 040 072 038 136322 DLN EE 046 072 045 072 045 135223 HVR EE 057 080 054 080 052 136122 LWT EE 050 072 050 070 048 136222
The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
3/4 inch diameter hail and estimated wind gusts of 52 kt reported by spotter at Eden 7 S.
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, July 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: 5261095.