Thunderstorm Wind, Musselshell
- When
- July 2, 6:20 PM MST
- Where
- Musselshell County, 10 mi SE of Roundup
- Measured
- 80 kt (92 mph)
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 46.350, -108.383
80 mph thunderstorm wind gust...trees down in the Bull Mountains
Damaging Wind in Montana, July 2, 2001
Severe thunderstorms (mainly large hail producers) developed across the NWS Billings County Warning Area around 9:00 pm on the evening of July 1st and continued through the early morning hours until 9:00 am July 2nd.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
What happened
The episode as NWS BYZ wrote it up.
Severe thunderstorms (mainly large hail producers) developed across the NWS Billings County Warning Area around 9:00 pm on the evening of July 1st and continued through the early morning hours until 9:00 am July 2nd.
What forecasters said that day
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 Billings, MT wrote its last area forecast discussion before the first event at Jul 2, 1:07 PM MST, 5 hours 13 minutes earlier.
Area forecast discussion, Jul 2, 1:07 PM MST, 5 hours 13 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
207 PM MDT MON JUL 2 2001
.TUE AND WED...
NEXT IN SERIES OF RIPPLES RIDING ALONG THE RIDGE OVER NORTHEAST OREGON
AND YET ANOTHER BEHIND THAT ONE NOW APPROACHING THE COAST. AGAIN...
MAIN CONVECTION THAT WOULD BE VULNERABLE TO FIRE UP AND AGAIN IT LOOKS
LIKE A NOCTURNAL EVENT. LESSER POSSIBILITIES FOR THIS EXIST OVER THE
WESTERN ZONES AND OVER SHERIDAN COUNTY WYOMING. WOULD LIKE TO SEE THE
NEXT MESO ETA PRIOR TO FINALIZING THINGS...BUT ANOTHER ROUND OF
THUNDERSTORMS LOOKS GOOD. AGAIN WOULD NOT BE SURPRISED IF SEVERE
STORMS OCCURRED. THE CAPES WERE SOMEWHAT MISLEADING ON THE LAST MODEL
RUNS CONSIDERING WHAT HAPPENED LAST NIGHT INTO THIS MORNING. THE
WESTERN ZONES LOOK LIKE THEY SHOULD BE MAINLY FREE OF PRECIPITATION
FROM TOMORROW ON. ELSEWHERE...PRECIPITATION LOOKS GOOD THROUGH AT
LEAST THE FIRST THREE PERIODS. QUESTION ARISES AS TO HOW FAST THE RIDGE
WILL BE BUILDING TO CAP OFF THE PRECIPITATION. A RATHER STRONG
DISTURBANCE RIDES OVER THE RIDGE ON WEDNESDAY...BUT SOUTH CENTRAL
MONTANA LOOKS LIKE IT WILL BE CAPPED...ALTHOUGH THIS CAP IS BROKEN
FARTHER SOUTH.
IT LOOKS LIKE ON THIS RUN...COMPARED TO THE PREVIOUS ONE...THAT THERE
MAY NOT BE A BACK DOOR FRONT COMING IN ON WEDNESDAY INTO THE COUNTY
WARNING AREA AS PREVIOUSLY THOUGHT. TEMPERATURES WILL BE GENERALLY AS
WARM OR A BIT WARMER AS AREA GETS MORE UNDER THE INFLUENCE OF THE
UPPER RIDGE. CHB
.THU...FRI...SAT...SUN...MON...
HIGH PRESSURE TO DOMINATE THE EXTENDED PERIOD. UPPER RIDGE OVER THE
NORTHERN ROCKIES BY MIDWEEK AND TO REMAIN STRONG THROUGH FRIDAY. MRF
TOO FAST BRINGING A PACIFIC SYSTEM INTO THE STATE THURSDAY EVENING AS
COMPARED TO OTHER MODELS THEREFORE WILL DELAY PASSAGE ABOUT A DAY.
WARMEST DAY THURSDAY PER LOCAL TEMP MIX PROGRAM WITH CLOUDS ALSO HOLDING
TEMPS DOWN A COUPLE DEGREES FRIDAY WITH COOLING SATURDAY. TEMPERATURES
THEN LEVEL OFF INTO MONDAY AS DRIER AIR MOVES INTO THE NORTHERN ROCKIES.
HAVE DELAYED TIMING OF THUNDERSTORMS AS WELL. THORICHT
TUE WED THU FRI SAT SUN MON
-----------------------------------------------------------
BIL 064/093 063/096 057/094 057/089 056/084 056/085 056/086
33/T 20/B 22/B 33/T 11/B 11/B 22/B
LVM 058/094 060/097 052/096 054/087 055/085 056/086 056/087
20/B 00/B 22/B 33/T 11/B 11/B 22/B
HDN 062/095 061/097 053/095 055/088 063/085 059/086 058/086
33/T 20/B 22/B 33/T 11/B 11/B 22/B
MLS 060/089 059/093 055/095 056/090 057/086 057/086 058/086
33/T 22/T 22/B 33/T 11/B 11/B 22/B
4BQ 061/090 060/095 054/094 055/089 058/085 057/085 057/086
33/T 32/T 22/B 33/T 11/B 11/B 22/B
BHK 058/088 058/092 053/095 054/088 054/085 054/085 055/086
33/T 22/T 22/B 33/T 11/B 11/B 22/B
SHR 057/093 057/095 051/094 050/088 051/084 052/084 052/086
23/T 22/T 22/B 33/T 11/B 11/B 22/BIn the hours before
Local storm report, Jul 2, 3:47 PM MST, 2 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS, MT
447 PM MDT MON JUL 2 2001
TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1000 PM 20 N ROUNDUP MT .75 INCH HAIL
07/01/01 MUSSELSHELL REPORTED BY SPOTTERS
1200 AM 10 N ROUNDUP MT .75 INCH HAIL
07/02/01 MUSSELSHELL REPORTED BY SPOTTERS
1200 AM 10 N ROUNDUP MT FLASH FLOODS
07/02/01 MUSSELSHELL WATER COVERED THE
ROADWAYS. REPORTED BY
SPOTTERS
1205 AM 9 NW ROUNDUP MT .75 INCH HAIL
07/02/01 MUSSELSHELL REPORTED BY SPOTTERS
1255 AM 10 N ROUNDUP MT FLASH FLOODS
07/02/01 MUSSELSHELL WATER CONTINUED TO COVER
THE ROADWAYS AND THE
RESERVOIRS ARE OVERFLOWING.
REPORTED BY SPOTTERS
0100 AM 27 N LAVINA MT .75 INCH HAIL
07/02/01 GOLDEN VALLEY REPORTED BY SPOTTERS
0300 AM 27 N LAVINA MT .75 INCH HAIL
07/02/01 GOLDEN VALLEY REPORTED BY SPOTTERS
0310 AM 10 N ROUNDUP MT .88 INCH HAIL
07/02/01 MUSSELSHELL REPORTED BY SPOTTERS
0530 AM 11 N HYSHAM MT 1.00 INCH HAIL
07/02/01 TREASURE REPORTED BY SPOTTERS
0540 AM VANANDA MT 1.75 INCH HAIL
07/02/01 ROSEBUD REPORTED BY SPOTTERS
0632 AM ROUNDUP MT .75 INCH HAIL
07/02/01 MUSSELSHELL REPORTED BY SPOTTERS
0730 AM 45 NE BILLINGS MT 1.75 INCH HAIL
07/02/01 YELLOWSTONE REPORTED BY SPOTTERS
0755 AM 6 NE CUSTER MT 1.75 INCH HAIL
07/02/01 YELLOWSTONE REPORTED BY SPOTTERS
0800 AM 14 W FORSYTH MT .75 INCH HAIL
07/02/01 ROSEBUD REPORTED BY SPOTTERS
0800 AM 12 SW FORSYTH MT .75 INCH HAIL
07/02/01 ROSEBUD REPORTED BY SPOTTERS
0825 AM 12 W FORSYTH MT .75 INCH HAIL
07/02/01 ROSEBUD REPORTED BY SPOTTERS
0830 AM 8 SE HYSHAM MT .75 INCH HAIL
07/02/01 TREASURE REPORTED BY SPOTTERS
0903 AM HYSHAM MT .75 INCH HAIL
07/02/01 TREASURE REPORTED BY SPOTTERS
TJThe radar
The Billings radar (KBLX), 58 km away, was scanning. The volume nearest the first event began at 01:22 UTC.
Event by event
1 thunderstorm wind. Local standard time, as filed.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Flash Flood in New Mexico, July 2, 2001
- Hail in Nebraska, July 2, 2001
- Flooding and Hail in Georgia, July 2 to 4, 2001
- Damaging Winds in New Mexico, July 2, 2001
- Flash Flood and Lightning Strike in North Carolina, July 2 to 3, 2001
- High Wind in Nevada, July 2, 2001
- Hail in Montana, July 2, 2001
- Flood in North Carolina, July 2, 2001
- Hail in Montana, July 2, 2001
- Hail in Montana, July 2, 2001
- Waterspouts in Mississippi, July 2, 2001
- High Wind in California, July 2, 2001
More
Every storm in Montana in 2001Every state in 2001This day in weather historyWarnings in Montana, July 2001
Sources
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: 5259286.