Hail history for Grundy County, TN

Grundy County has 48 recorded hail events in the NOAA Storm Events Database — 25 of them 1″ or larger and 3 at 2″ or larger. The largest on record: 2.5″ (tennis ball) on April 3, 2007.

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 48 since 1959

1″ or larger 25 NWS severe threshold

2″ or larger 3 hen egg class and up

Largest recorded 2.5″ tennis ball · April 3, 2007

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 Grundy County

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

Most recent recorded events

Latest 8 of 48 recorded events · data through April 2026
Date	Size	Comparable to
March 1, 2017	1.25″	Half dollar
March 1, 2017	1.75″	Golf ball
March 1, 2017	1.0″	Quarter
August 1, 2012	0.75″	Penny
May 19, 2012	0.88″	Nickel
June 24, 2011	1.0″	Quarter
June 15, 2011	1.0″	Quarter
May 28, 2010	1.0″	Quarter

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

From the storm reports

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

March 1, 2017 · 1.75″ (golf ball)

Hail ranging in size from 1.5 inches to nearly 2 inches in diameter was reported on Pelham Mountain. Numerous homes and vehicles were damaged by the hail.

April 3, 2007 · 2.5″ (tennis ball)

Tennis ball size hail broke the windshield of a vehicle.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
1	2	1	4	15	15	10	0

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 Grundy County

Has it ever hailed in Grundy County?

Yes — 48 hail events have been recorded for Grundy County, TN in the NOAA Storm Events Database since 1959, including 25 of 1″ (quarter size) or larger.

When did it last hail in Grundy County?

The most recent recorded hail event for Grundy County, TN is March 1, 2017, with 1.25″ (half dollar) 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 Grundy County?

2.5″ (tennis ball), recorded on April 3, 2007. Hail that size meets or exceeds the National Weather Service severe threshold. 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.