Hail history for Grundy County, Tennessee
Every NOAA hail report filed in Grundy County since 1959, with preliminary National Weather Service reports to November 3, 2026.
Readout · Grundy County
- Last hail
- Mar 1, 2017
- 1.00 in, quarter size
- Hail days, last 5 years
- 0
- since Nov 3, 2021 · 0 reports
- Largest ever
- 2.50 in
- tennis ball · Apr 3, 2007
48 reports on 38 days since 1959 · #66 of 96 Tennessee counties
Hail map · Grundy County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Roof damage after hail? Get a free inspection
Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Grundy County is from March 1, 2017. A local roofer can check and document it at no cost.
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What the record says about Grundy County
The latest hail report in Grundy County is from March 1, 2017, 1.00 in (quarter size). There has been no hail report here in the five years since November 3, 2021.
Over the 20 years 2006–2025, Grundy County logged 16 reports on 10 hail days, about 0.8 reports a year. That is about half the median Tennessee county (1.6 a year) and ranks #66 of 96 Tennessee counties for all-time reports. Grundy County holds 1% of all 7,198 hail reports in Tennessee.
6% of reports with a size were 2 inches (hen egg) or larger, against 4% for the median Tennessee county. The largest hail on record here is 2.50 in (tennis ball) on April 3, 2007 near 6.5 SW Altamont.
Reports were down 77% in 2016–2025 (3) compared with 2006–2015 (13). The busiest year was 1997, with 7 reports on 6 days. Hail here peaks in April (25% of reports); 50% fall between April and June.
Reports a year 2006–2025 average
- Grundy County 0.8
- Median Tennessee county 1.6
Hail days 2006–2025
- Grundy County 10
- Median Tennessee county 23
Share 2 in or larger of sized reports
- Grundy County 6%
- Median Tennessee county 4%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 3 | 3 |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Apr 3, 2007 | 2.50 intennis ball | 6.5 SW Altamont | $2K | 14:50 local · NCEI |
| Jun 6, 1985 | 2.00 inhen egg | — | — | 17:25 local · NCEI |
| Apr 22, 1970 | 2.00 inhen egg | — | — | 16:30 local · NCEI |
| Mar 1, 2017 | 1.75 ingolf ball | Counter Pen | $10K | 12:57 local · NCEI |
| Jan 21, 2010 | 1.75 ingolf ball | 2.15 SSE Gruetli | — | 17:30 local · NCEI |
Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.
Size of every report
- Under 1 in 23 48%
- 1–2 in 22 46%
- 2 in + 3 6%
Most recent reports
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Mar 1, 2017 | 1.00 inquarter | Coalmont | — | 13:05 local · NCEI |
| Mar 1, 2017 | 1.25 inhalf dollar | 1.44 SSW Cumberland Hgts | — | 13:04 local · NCEI |
| Mar 1, 2017 | 1.75 ingolf ball | Counter Pen | $10K | 12:57 local · NCEI |
| Aug 1, 2012 | 0.75 inpenny | Altamont | — | 17:45 local · NCEI |
| May 19, 2012 | 0.88 innickel | 0.69 S Hobbs Hill | — | 12:25 local · NCEI |
| Jun 24, 2011 | 1.00 inquarter | Altamont | — | 11:57 local · NCEI |
| Jun 15, 2011 | 1.00 inquarter | Pelham | — | 15:25 local · NCEI |
| May 28, 2010 | 1.00 inquarter | 1 N Altamont | — | 12:30 local · NCEI |
| Jan 21, 2010 | 1.75 ingolf ball | 2.15 SSE Gruetli | — | 17:30 local · NCEI |
| Jan 21, 2010 | 1.00 inquarter | 0.19 WNW Roddy Spgs | — | 17:25 local · NCEI |
| May 23, 2008 | 1.75 ingolf ball | Tracy City | — | 13:18 local · NCEI |
| Apr 3, 2007 | 1.75 ingolf ball | Altamont | — | 15:00 local · NCEI |
Cities and towns in Grundy County
| Place | Reports | Largest |
|---|---|---|
| Altamont | 19 | 1.75 in |
Smaller places with fewer than 10 reports
These places have too few reports for a page of their own, so their record lives here.
| Place | Reports | Hail days | Latest |
|---|---|---|---|
| Monteagle | 9 | 8 | Apr 11, 2008 |
| Coalmont | 6 | 6 | Mar 1, 2017 |
| Pelham | 5 | 5 | Jun 15, 2011 |
| Tracy City | 5 | 5 | May 19, 2012 |
| Gruetli-Laager | 4 | 4 | Jan 21, 2010 |
| Palmer | 2 | 2 | Jun 6, 1985 |
| Beersheba Springs | 1 | 1 | Oct 25, 1997 |
| Viola | 1 | 1 | Mar 29, 2002 |
Questions about hail in Grundy County
How often does it hail in Grundy County, Tennessee?
48 hail reports have been logged in Grundy County since 1959. Over the 20 years 2006–2025 that averages 0.8 reports a year. That ranks #66 of 96 Tennessee counties by number of reports.
When is hail season in Grundy County?
Most reports come in April, March, May. April alone accounts for 25% of all reports.
What is the largest hail recorded in Grundy County?
2.50 in (tennis ball size) on April 3, 2007 near 6.5 SW Altamont. 6% of reports here were 2 inches or larger.
When did it last hail in Grundy County?
The most recent report in this data is from March 1, 2017 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Grundy County had in the last five years?
None: there has been no hail report in Grundy County since November 3, 2021. The last one was on March 1, 2017.
Where does this hail data come from?
Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.