Hail in Fall River County, South Dakota

Hail in Fall River County, South Dakota: 376 recorded events between 1959 and 2025. The strongest on record measured 4.5. That places the county #189 nationally and #7 statewide for this hazard.

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

The busiest decade for hail in Fall River County is the 2010s, when 139 of the county's 376 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 Fall River County archive, hail makes up 55.5% of all recorded severe weather across 9 hazard types. Nationally the county sits at #189 for this hazard and #7 within South Dakota, putting it in the 93.9 percentile of all U.S. counties.

Jun is the peak month for hail in Fall River County with 144 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.

• Thunderstorm Wind 235

How many hail events are on record in Fall River County, South Dakota?

376 hail events are recorded in Fall River County between 1959 and 2025, causing 0 direct deaths.

What is the strongest hail recorded in Fall River County?

The strongest hail on record in Fall River County measured 4.5.

Where does the hail data for Fall River 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.