Hail history for Harrison County, MO

Harrison County has 156 recorded hail events in the NOAA Storm Events Database — 118 of them 1″ or larger and 18 at 2″ or larger. The largest on record: 4.0″ (softball) on May 6, 2023.

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 156 since 1958

1″ or larger 118 NWS severe threshold

2″ or larger 18 hen egg class and up

Largest recorded 4.0″ softball · May 6, 2023

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 Harrison County

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

Most recent recorded events

Latest 8 of 156 recorded events · data through April 2026
Date	Size	Comparable to
April 15, 2026	1.75″	Golf ball
April 15, 2026	1.75″	Golf ball
April 15, 2026	1.75″	Golf ball
April 15, 2026	3.0″	Tea cup
April 15, 2026	1.75″	Golf ball
April 15, 2026	1.75″	Golf ball
April 15, 2026	2.0″	Hen egg
May 20, 2025	1.0″	Quarter

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

From the storm reports

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

April 15, 2026 · 3.0″ (tea cup)

Hail larger than baseballs (up to 3 inches in diameter) was reported near Interstate 35 near Bridgeport by a deputy.

April 15, 2026 · 2.0″ (hen egg)

Two inch hail reported on Highway H west of Gilman City.

May 6, 2023 · 4.0″ (softball)

Softball sized hail was reported near Gilman City.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
1	5	1	2	14	57	54	22

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 Harrison County

Has it ever hailed in Harrison County?

Yes — 156 hail events have been recorded for Harrison County, MO in the NOAA Storm Events Database since 1958, including 118 of 1″ (quarter size) or larger.

When did it last hail in Harrison County?

The most recent recorded hail event for Harrison County, MO is April 15, 2026, with 1.75″ (golf 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 Harrison County?

4.0″ (softball), recorded on May 6, 2023. 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 Missouri hail history

All 115 Missouri 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.