Hail history for Osage County, OK

Osage County has 666 recorded hail events in the NOAA Storm Events Database — 324 of them 1″ or larger and 31 at 2″ or larger. The largest on record: 4.5″ (grapefruit) on February 10, 2009.

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 666 since 1958

1″ or larger 324 NWS severe threshold

2″ or larger 31 hen egg class and up

Largest recorded 4.5″ grapefruit · February 10, 2009

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 Osage County

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

Most recent recorded events

Latest 8 of 666 recorded events · data through April 2026
Date	Size	Comparable to
April 28, 2026	1.0″	Quarter
April 28, 2026	1.0″	Quarter
April 26, 2026	1.0″	Quarter
April 23, 2026	0.88″	Nickel
April 23, 2026	0.75″	Penny
April 23, 2026	0.88″	Nickel
April 15, 2026	1.0″	Quarter
April 15, 2026	1.0″	Quarter

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

From the storm reports

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

June 17, 2025 · 1.5″ (ping-pong ball)

Ping pong ball size hail damaged homes and vehicles.

May 15, 2024 · 3.5″ (softball)

Giant hail measured up to 3.5 inches in diameter damaged homes, businesses, and vehicles.

February 10, 2009 · 4.5″ (grapefruit)

Softball size hail damaged cars and roofs of buildings.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
4	23	16	55	239	183	89	57

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 Osage County

Has it ever hailed in Osage County?

Yes — 666 hail events have been recorded for Osage County, OK in the NOAA Storm Events Database since 1958, including 324 of 1″ (quarter size) or larger.

When did it last hail in Osage County?

The most recent recorded hail event for Osage County, OK is April 28, 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 Osage County?

4.5″ (grapefruit), recorded on February 10, 2009. 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.