Thunderstorm Wind in Petroleum County, Montana

Thunderstorm Wind in Petroleum County, Montana: 72 recorded events between 1986 and 2026. The strongest on record measured 78. That places the county #2,540 nationally and #32 statewide for this hazard.

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

The busiest decade for thunderstorm wind in Petroleum County is the 2000s, when 33 of the county's 72 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 Petroleum County archive, thunderstorm wind makes up 32.0% of all recorded severe weather across 9 hazard types. Nationally the county sits at #2,540 for this hazard and #32 within Montana, putting it in the 19.5 percentile of all U.S. counties.

Jul is the peak month for thunderstorm wind in Petroleum County with 37 recorded events, while Jan 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

How many thunderstorm wind events are on record in Petroleum County, Montana?

72 thunderstorm wind events are recorded in Petroleum County between 1986 and 2026, causing 0 direct deaths.

What is the strongest thunderstorm wind recorded in Petroleum County?

The strongest thunderstorm wind on record in Petroleum County measured 78.

Where does the thunderstorm wind data for Petroleum 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.