Helena Valley storm history
Storm events recorded in Helena Valley, Montana between 1950 and 2025.
27
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
Numerous sensors measured high winds and numerous reports of damage were received from trained spotters and the public. Sensors that reported criteria winds: ASOS station KHLN Helena Airport, mesonet station HVMT Helena Agrimet, HRWM8 Helena RAWS, and mesonet station FW7359 Helen…
High Wind High Wind
ASOS station KHLN Helena Airport measured two gust sin excess of 58 mph, including a peak of 64 mph.
Heavy Snow Heavy Snow
The public and several trained spotters relayed reports of 6+ inches new snow from the evening of the 11th into the morning of the 12th. The peak report was 10.8 inches new snow in the foothills on the north side of Mt Helena.
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
RAWS station HRWM8 Helena measured a -40F wind chill.
Heavy Snow Heavy Snow
Two reports in the Helena valley of 6 inches or greater new snow, including a 9 inch report 1 mile SSW of the center of Helena.
Heavy Snow Heavy Snow
A trained spotter and a cocorahs observation both reported 6 inches new snow 4 miles North of East Helena during the daytime of the 3rd.
High Wind High Wind
ASOS station KHLN measured many gusts of 58 mph or greater over a half an hour, including a peak gust of 67 mph.
Winter Weather Winter Weather
NWS employee, along with numerous social media and broadcast media posts, reported intermittent light freezing rain in and around the Helena Valley. Well traveled roads remained fine for the most part, with lesser traveled roads becoming the most slick.
High Wind High Wind
ASOS station KHLN Helena Airport measured a 60 mph gust.
High Wind High Wind
Ambient Sensor 'Nob Hill' in Helena measured a 59 mph gust.
Heavy Snow Heavy Snow
Multiple reports were received of 6 inches new snow or greater in the Helena Valley. The peak report was 6.9 inches 2 miles west of Helena.
Heavy Snow Heavy Snow
Multiple reports of 6 inches or greater were observed in the Helena Valley, including official NWS obs at the Helena Airport. The peak observation was 10.5 inches 2 miles west of Helena.
Heavy Snow Heavy Snow
Multiple reports of 6 to 7 inches of snow were received from the Helena Valley. The highest report was 7.2 inches 2 miles west of Helena.
Winter Storm Winter Storm
Public report via social media of 6 inches snow overnight. Snow ended at the nearby Helena Airport around 6 AM MST. This was used as an estimated end time.
Winter Weather Winter Weather
Snow Squall. Heavy snow with visibility down to 1/8 of a mile.
Winter Weather Winter Weather
Snow Squall. Light snow started at the airport at 11:30 AM. Visibility quickly reduced down to 0.75 miles in 9 minutes. ASOS reported winds gusting between 35 and 39 mph. Moderate snow fall by the ASOS was reported between 11:45 and 11:55 AM with visibility down to 0.5 miles. Vis…
High Wind High Wind
ASOS station KHLN Helena Airport measured 58 mph wind gust.
Heavy Snow Heavy Snow
Several reports were received of an additional 6 inches of snow in the Helena valley overnight the 25th into the 26th. Most snow fell between midnight and 6 AM in Helena. Official NWS observations at the Helena Airport totaled 6.4 inches late evening the 25th through the early af…
Winter Storm Winter Storm
Many reports were received from the Helena Valley meeting winter storm criteria. Reports ranged from 6 inches all the way up to 13.4 inches in the Helena area. Official NWS obs at the Helena Airport measured 6.5 inches storm total snow.
High Wind High Wind
ASOS station KHLN Helena Airport measured a 59 mph wind gust.
Heavy Snow Heavy Snow
Helena Law Enforcement reported two school bus slide offs, a semi crash that took out a fire hydrant, and multiple two-vehicle crashes. CoCoRaHS station MT-LC-14 2 NNW Helena reported 6 inches of snowfall.
Heavy Snow Heavy Snow
Multiple trained spotters reported storm total snow of 6 inches or greater, including a reported 8.9 inches of snowfall 2 miles west of Helena.
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
Multiple sensors measured wind chills of less than -40 F, including mesonet station FW7359 in Helena which measured a minimum wind chill of -44 F.
Heavy Snow Heavy Snow
Trained spotter 1 ene of East Helena reports 8 inches new snow overnight.
Winter Weather Winter Weather
Snow Squall. NWS employee located 4 miles north of East Helena reported visibility down to less than half a block with estimated wind gusts of 40 mph. Minimal snow accumulation occurred due to the wind.
High Wind High Wind
Trained spotter reported 80 mph wind gust 11 W Helena.
High Wind High Wind
ASOS station KHLN (Helena Airport) reported 68 mph wind gust.
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 6 | 0 |
| 2024 | 10 | 0 |
| 2023 | 6 | 0 |
| 2022 | 5 | 0 |