Hail history for Fall River County, SD

Fall River County has 376 recorded hail events in the NOAA Storm Events Database — 280 of them 1″ or larger and 50 at 2″ or larger. The largest on record: 4.5″ (grapefruit) on June 12, 2001.

Records 1950–present Data through April 2026 Peak month June

Core sample · every recorded event, 1955–2026

Mark size = measured hail diameter; slivers are events with no recorded size. Amber ≥2″, red ≥2.75″ (baseball class). Denser recent decades partly reflect better reporting, not only more storms.

Recorded events 376 since 1959

1″ or larger 280 NWS severe threshold

2″ or larger 50 hen egg class and up

Largest recorded 4.5″ grapefruit · June 12, 2001

Read the record honestly: Storm Events contains what was reported to the National Weather Service. Sparse or rural counties under-report, and coverage improved sharply after the mid-1990s — a quiet-looking stretch is not proof nothing fell.

When it hails in Fall River County

Recorded events by month, 1950–present. The amber bar marks Fall River County's peak: June.

Most recent recorded events

Latest 8 of 376 recorded events · data through April 2026
Date	Size	Comparable to
August 5, 2025	0.75″	Penny
August 5, 2025	1.0″	Quarter
July 5, 2025	0.75″	Penny
July 5, 2025	1.0″	Quarter
July 5, 2025	1.0″	Quarter
July 5, 2025	1.25″	Half dollar
June 29, 2025	1.0″	Quarter
June 29, 2025	1.25″	Half dollar

Looking for a specific storm? Use the did-it-hail date lookup for Fall River County.

From the storm reports

Narratives as filed with the NOAA Storm Events Database (public records; lightly trimmed for length).

August 5, 2025 · 1.0″ (quarter)

Dime to Quarter hail report from trained spotter.

June 22, 2012 · 4.25″ (grapefruit)

Hail from golfball to softball size fell.

May 24, 2010 · 4.25″ (grapefruit)

Golfball to softball sized hail fell from Angostura Reservoir to Maverick Junction and damaged vehicles.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
2	4	3	27	31	99	139	71

The climb across decades is largely a reporting story: spotter networks, radar, and digital filing pulled far more storms into the record after the 1990s.

Questions about hail in Fall River County

Has it ever hailed in Fall River County?

Yes — 376 hail events have been recorded for Fall River County, SD in the NOAA Storm Events Database since 1959, including 280 of 1″ (quarter size) or larger.

When did it last hail in Fall River County?

The most recent recorded hail event for Fall River County, SD is August 5, 2025, with 0.75″ (penny) hail. The database is currently updated through April 2026, so a storm from the last few weeks may not appear yet. To check a specific day, use the did-it-hail date lookup.

What is the largest hail ever recorded in Fall River County?

4.5″ (grapefruit), recorded on June 12, 2001. Hail that size is destructive-class and typically damages roofs, vehicles, and siding. See how big that really is on the actual-size hail chart.

Does a recorded hail event mean my roof was damaged?

No. This page reports storm records, not damage. Hail size and damage vary block by block within a county, and only an inspection can establish what happened to a specific roof. If you suspect damage, talk to your insurer or a licensed roofer — they can pull the same NOAA records for your claim.

More South Dakota hail history

All 66 South Dakota counties, ranked by recorded hail →

Source: NOAA/NCEI Storm Events Database, public domain, updated monthly by NCEI — this site's copy runs through April 2026. HailHistory reports records; it does not give insurance advice or assess damage.