Thunderstorm Wind in Lewis and Clark County, Montana

Thunderstorm Wind in Lewis and Clark County, Montana: 114 recorded events between 1974 and 2025. The strongest on record measured 76. That places the county #2,025 nationally and #23 statewide for this hazard.

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for thunderstorm wind in Lewis and Clark County is the 2000s, when 36 of the county's 114 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.

Within the Lewis and Clark County archive, thunderstorm wind makes up 36.3% of all recorded severe weather across 11 hazard types. Nationally the county sits at #2,025 for this hazard and #23 within Montana, putting it in the 35.6 percentile of all U.S. counties.

Jul is the peak month for thunderstorm wind in Lewis and Clark County with 36 recorded events, while Feb is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.

• Hail 115

Written by National Weather Service staff at the time of the event · public domain

How many thunderstorm wind events are on record in Lewis and Clark County, Montana?

114 thunderstorm wind events are recorded in Lewis and Clark County between 1974 and 2025, causing 0 direct deaths.

What is the strongest thunderstorm wind recorded in Lewis and Clark County?

The strongest thunderstorm wind on record in Lewis and Clark County measured 76.

Where does the thunderstorm wind data for Lewis and Clark County come from?

All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.