Gallatin Valley storm history
Storm events recorded in Gallatin Valley, Montana between 1950 and 2025.
42
Total events
0
Tornadoes
0
Hail
0
Floods
0
Deaths
$0
Property damage
Most significant events
Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.
High Wind High Wind
Three reports of gusts of 58 mph or greater were received, including ASOS station KBZN Bozeman Airport, mesonet station FW1650 Bozeman, and a trained spotter report from 3 NW Amsterdam. The peak observed gust was from the trained spotter (64 mph). Emergency management at MSU Boze…
High Wind High Wind
Several sources reported sustained winds of 40 mph averaged over at least an hour or gusts of 58 mph, including ASOS station KBZN Bozeman Airport, Montana mesonet station Manhattan S, mesonet station AV387 Manhattan, as well as trained spotters. The peak gust in the Gallatin vall…
Heavy Snow Heavy Snow
A spotter 6 miles north of Bozeman reported 6 inches of storm total snow. Observers in Bozeman reported 7 to 8 inches of snow.
Winter Weather Winter Weather
MT DOT webcams showed a thunderstorm quickly switch over heavy snow with visibility around a half mile or less near Belgrade. The Bozeman Airport ASOS (KBZN) also showed a thunderstorm quickly transitioning to a half mile of moderate snow from 12:40 to 12:55 MST. Visibility impro…
Heavy Snow Heavy Snow
Two reports were received measuring 6 inches of snow or greater, including a coop report at MSU Bozeman of 6.6 inches new snow over 24 hours.
Heavy Snow Heavy Snow
Trained spotter reports 8.5 inches of new snow over 12 hours near Church Hill. Criteria time estimated.
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
ASOS station KBZN Bozeman Airport measured a wind chill of -39F.
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
Mesonet station CW7710 Logan measured a -37 F wind chill.
Winter Storm Winter Storm
Trained spotter reported greater than 4 inches over a 6 hour span in the Gallatin Valley. Several sources reported winter storm-like impacts, including very low visibility and difficult travel. Although 6 inches of snow was not observed in this zone, the rate warranted a winter s…
Heavy Snow Heavy Snow
Trained spotter in the far southeastern end of the Gallatin Valley reported a foot of new snow over 4 hours.
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
ASOS station KBZN Bozeman Airport measured wind chill down to -41F.
High Wind High Wind
Weather Underground site Johnson Rd Ranch (On Bench) - KMTBOZEM429 measured a 67 mph gust.
High Wind High Wind
Ambient station Sourdough Ridge in Bozeman measured a 63 mph gust.
Winter Weather Winter Weather
Many reports of snow were reported in the Gallatin valley. The vast majority were below 6 inches in total, but one report of 6 inches was submitted at the extreme southern end of the zone.
Heavy Snow Heavy Snow
Trained spotter reported 11 inches new snow overnight. Additionally, a COCORAHS observer measured 7.5 inches new snow over 24 hours.
Winter Weather Winter Weather
Snow Squall. The KBZN ASOS measured wind gusts in excess of 35 mph just as visibility was reduced to a quarter mile from snow. Intermittent periods of reduced visibility (1/2 SM) and breezy winds were observed through 1230 AM 3/4.
Heavy Snow Heavy Snow
Several reports were received of 6 to 7 inches of heavy, wet snow in the far southern end of Bozeman.
High Wind High Wind
Ambient weather station (Sourdough Ridge) 2 SSE of Bozeman measured a 63 mph wind gust.
Winter Storm Winter Storm
Multiple trained spotters reported snow in excess of 6 inches over 6 hours. The greatest snow total was 8 inches near Church Hill. In addition to snow amounts, reduced visibility at the Bozeman Airport resulted in double digit commercial aviation diversions to nearby airports.
Heavy Snow Heavy Snow
A trained spotter on the western end of the Gallatin Valley reported 6.5 inches event total snow. Start time, end, and verification time are estimated.
Winter Storm Winter Storm
Public report of 5 inches 12 NE Bozeman.
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
Mesonet station GNFHY 10.7 W Emigrant. Wind chill of -59F.
High Wind High Wind
Mesonet station GNFHY 10.7 W Emigrant reported 67 mph wind gust.
Winter Weather Winter Weather
Snow Squall. Visibility less than a quarter of a mile. Heavy snowfall. Blizzard conditions reported by the spotter.
Winter Weather Winter Weather
Snow Squall. At 1:20 PM, Bozeman Airport ASOS reported light snow and 40 mph wind gusts with visibility down to 1.25 miles. 4 minutes later, ASOS reported wind gusts up to 44 mph and visibility down to 0.25 miles. These conditions continued for 10 minutes before visibility improv…
High Wind High Wind
Mesonet station mtm71 Mahattan s-mda measured a 59 mph gust.
Heavy Snow Heavy Snow
A highly impactful heavy wet snow even occurred across the Bozeman metro area. Heavy snow occurred across downtown to areas across Montana State University. The public reported an unconfirmed amount of 36 inches of snow about eight miles SSE of Bozeman. Nearly two feet of snow fe…
High Wind High Wind
Mesonet station GNFHY (10.7 W Emigrant) reported 65 mph wind gust.
Winter Weather Winter Weather
Trained spotter reported a snow squall, which produced a quick accumulation of a half inch of snow. Spotter did not report any more details.
Heavy Snow Heavy Snow
Trained spotter reported 10 inches storm total snow. Start time is estimated due to lack of radar coverage.
Heavy Snow Heavy Snow
COOP observer BZEM8 Bozeman MSU measured 9 inches of new snow over 24 hours.
Heavy Snow Heavy Snow
Observer at MSU Bozeman campus reported an event total snow amount of 8.7 inches. Additionally, a CoCoRaHS observer on the southeast side of Bozeman reported 9.3 inches. A trained spotter 5 miles east of Gallatin Gateway reported an event total of 15 inches. Locations around Belg…
High Wind High Wind
ASOS station KBZN Bozeman Yellowstone Airport measured a wind gust of 67 mph.
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
Multiple sensors measured wind chills of less than -40 F, including ASOS station KBZN which measured a minimum wind chill of -53 F. KBZN ASOS also had a peak minimum air temperature of -45 F the morning of December 22nd, which was one degree shy of tying the all time record low f…
Heavy Snow Heavy Snow
Report from public located 4 miles south-southwest Bozeman of 10 inches of snow during the event.
Heavy Snow Heavy Snow
CoCoRaHS station MT-GN-11 1 SE Bozeman reported 8.2 inches of snowfall over 24 hour period.
Heavy Snow Heavy Snow
Several public reports on social media of 6 to 7 inches of snow in Belgrade over 24 hours.
Heavy Snow Heavy Snow
Trained spotter reported 6.1 inches of snowfall.
High Wind High Wind
Mesonet station GNFHY (10.7 W Emigrant) reported 63 mph wind gust.
High Wind High Wind
ASOS station KBZN (Bozeman Yellowstone Airport) reported 63 mph wind gust.
High Wind High Wind
Trained spotter 1 WNW Belgrade reported 50 mph gust around 10am, then 59 mph gust around 2pm.
Heavy Snow Heavy Snow
Spotter reports 10.5 inches new snow accumulation. Bozeman MSU co-op reported 12.3 inches storm total accumulation.
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 11 | 0 |
| 2024 | 14 | 0 |
| 2023 | 7 | 0 |
| 2022 | 10 | 0 |