Hail history for Unicoi County, TN

Unicoi County has 20 recorded hail events in the NOAA Storm Events Database — 10 of them 1″ or larger and 1 at 2″ or larger. The largest on record: 2.75″ (baseball) on May 1, 1990.

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 20 since 1967

1″ or larger 10 NWS severe threshold

2″ or larger 1 hen egg class and up

Largest recorded 2.75″ baseball · May 1, 1990

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 Unicoi County

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

Most recent recorded events

Latest 8 of 20 recorded events · data through April 2026
Date	Size	Comparable to
April 30, 2025	1.0″	Quarter
March 17, 2018	1.0″	Quarter
April 9, 2011	1.0″	Quarter
June 11, 2009	0.88″	Nickel
June 2, 2009	0.75″	Penny
August 2, 2008	1.5″	Ping-pong ball
May 20, 2008	0.75″	Penny
May 8, 2004	0.75″	Penny

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

From the storm reports

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

March 17, 2018 · 1.0″ (quarter)

Quarter size hail was reported at Limestone Cove.

August 2, 2008 · 1.5″ (ping-pong ball)

Dispatch reported ping pong ball size hail fell north of Unicoi.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	1	0	0	6	10	2	1

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 Unicoi County

Has it ever hailed in Unicoi County?

Yes — 20 hail events have been recorded for Unicoi County, TN in the NOAA Storm Events Database since 1967, including 10 of 1″ (quarter size) or larger.

When did it last hail in Unicoi County?

The most recent recorded hail event for Unicoi County, TN is April 30, 2025, 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 Unicoi County?

2.75″ (baseball), recorded on May 1, 1990. 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 Tennessee hail history

All 95 Tennessee 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.