Hail history for Seminole County, OK

Seminole County has 271 recorded hail events in the NOAA Storm Events Database — 172 of them 1″ or larger and 29 at 2″ or larger. The largest on record: 4.5″ (grapefruit) on June 8, 1998.

Records 1950–present Data through April 2026 Peak month April

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 271 since 1957

1″ or larger 172 NWS severe threshold

2″ or larger 29 hen egg class and up

Largest recorded 4.5″ grapefruit · June 8, 1998

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 Seminole County

Recorded events by month, 1950–present. The amber bar marks Seminole County's peak: April.

Most recent recorded events

Latest 8 of 271 recorded events · data through April 2026
Date	Size	Comparable to
April 24, 2026	1.5″	Ping-pong ball
April 24, 2026	2.27″	Tennis ball
April 24, 2026	1.5″	Ping-pong ball
April 24, 2026	2.5″	Tennis ball
April 24, 2026	1.0″	Quarter
January 8, 2026	1.0″	Quarter
May 19, 2025	0.75″	Penny
May 19, 2025	2.25″	Tennis ball

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

From the storm reports

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

April 24, 2026 · 1.0″ (quarter)

The report was relayed through mPING.

September 23, 2023 · 3.25″ (tea cup)

Relayed image.

June 16, 1997 · 4.0″ (softball)

Spotters reported 4-inch hail just north of Highway 9 on Highway 56 east of Seminole.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
3	4	5	40	86	60	37	36

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 Seminole County

Has it ever hailed in Seminole County?

Yes — 271 hail events have been recorded for Seminole County, OK in the NOAA Storm Events Database since 1957, including 172 of 1″ (quarter size) or larger.

When did it last hail in Seminole County?

The most recent recorded hail event for Seminole County, OK is April 24, 2026, with 1.5″ (ping-pong ball) 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 Seminole County?

4.5″ (grapefruit), recorded on June 8, 1998. 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 Oklahoma hail history

All 77 Oklahoma 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.