Hail history for Ottawa County, OK

Ottawa County has 232 recorded hail events in the NOAA Storm Events Database — 137 of them 1″ or larger and 18 at 2″ or larger. The largest on record: 4.25″ (grapefruit) on May 4, 2003.

Records 1950–present Data through April 2026 Peak month May

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 232 since 1956

1″ or larger 137 NWS severe threshold

2″ or larger 18 hen egg class and up

Largest recorded 4.25″ grapefruit · May 4, 2003

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 Ottawa County

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

Most recent recorded events

Latest 8 of 232 recorded events · data through April 2026
Date	Size	Comparable to
April 25, 2026	1.0″	Quarter
March 22, 2025	1.0″	Quarter
March 22, 2025	1.5″	Ping-pong ball
May 26, 2024	1.25″	Half dollar
May 26, 2024	1.0″	Quarter
May 26, 2024	2.0″	Hen egg
May 26, 2024	1.75″	Golf ball
May 26, 2024	1.75″	Golf ball

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

From the storm reports

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

March 22, 2025 · 1.5″ (ping-pong ball)

Ping pong ball size hail damaged vehicles and homes.

May 4, 2020 · 2.75″ (baseball)

Baseball size hail damaged vehicles and homes.

May 4, 2003 · 2.75″ (baseball)

Baseball sized hail caused significant damage to about 160 cars at an automobile dealership. Cars and house roofs near the dealership also likely sustained damage.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
3	7	3	9	62	58	57	33

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 Ottawa County

Has it ever hailed in Ottawa County?

Yes — 232 hail events have been recorded for Ottawa County, OK in the NOAA Storm Events Database since 1956, including 137 of 1″ (quarter size) or larger.

When did it last hail in Ottawa County?

The most recent recorded hail event for Ottawa County, OK is April 25, 2026, with 1.0″ (quarter) 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 Ottawa County?

4.25″ (grapefruit), recorded on May 4, 2003. 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.