Hail history for Unicoi County, Tennessee
Every NOAA hail report filed in Unicoi County since 1967, with preliminary National Weather Service reports to November 3, 2026.
Readout · Unicoi County
- Last hail
- Apr 30, 2025
- 1.00 in, quarter size
- Hail days, last 5 years
- 1
- since Nov 3, 2021 · 1 report
- Largest ever
- 2.75 in
- baseball · May 1, 1990
20 reports on 19 days since 1967 · #93 of 96 Tennessee counties
Hail map · Unicoi County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
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What the record says about Unicoi County
The latest hail report in Unicoi County is from April 30, 2025, 1.00 in (quarter size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.00 in on April 30, 2025.
Over the 20 years 2006–2025, Unicoi County logged 7 reports on 7 hail days, about 0.3 reports a year. That is 21% of the median Tennessee county (1.6 a year) and ranks #93 of 96 Tennessee counties for all-time reports. Unicoi County holds 0% of all 7,198 hail reports in Tennessee.
5% 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 2.75 in (baseball) on May 1, 1990.
The busiest year was 2002, with 3 reports on 2 days. Hail here peaks in April (30% of reports); 80% fall between April and June.
Reports a year 2006–2025 average
- Unicoi County 0.3
- Median Tennessee county 1.6
Hail days 2006–2025
- Unicoi County 7
- Median Tennessee county 23
Share 2 in or larger of sized reports
- Unicoi County 5%
- Median Tennessee county 4%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 1 | 1 | |||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 1 | 1 | |||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Apr 30, 2025 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| May 1, 1990 | 2.75 inbaseball | — | — | 14:52 local · NCEI |
| Apr 28, 2002 | 1.75 ingolf ball | Marbleton | $5K | 17:25 local · NCEI |
| May 14, 1967 | 1.75 ingolf ball | — | — | 13:25 local · NCEI |
| Aug 2, 2008 | 1.50 inping pong ball | 0.69 N Unicoi | — | 16:15 local · NCEI |
| Apr 30, 2025 | 1.00 inquarter | Ernestville | — | 16:10 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 10 50%
- 1–2 in 9 45%
- 2 in + 1 5%
Most recent reports
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Apr 30, 2025 | 1.00 inquarter | Ernestville | — | 16:10 local · NCEI |
| Mar 17, 2018 | 1.00 inquarter | 0.56 E Limestone Cove | — | 20:03 local · NCEI |
| Apr 9, 2011 | 1.00 inquarter | Erwin | — | 17:10 local · NCEI |
| Jun 11, 2009 | 0.88 innickel | 0.56 W Fishery | — | 14:36 local · NCEI |
| Jun 2, 2009 | 0.75 inpenny | 1.31 ESE Marbleton | — | 16:27 local · NCEI |
| Aug 2, 2008 | 1.50 inping pong ball | 0.69 N Unicoi | — | 16:15 local · NCEI |
| May 20, 2008 | 0.75 inpenny | 0.89 SW Rock Creek | — | 14:30 local · NCEI |
| May 8, 2004 | 0.75 inpenny | 1 S Banner Hill | — | 16:40 local · NCEI |
| Apr 30, 2003 | 0.75 inpenny | Erwin | — | 14:00 local · NCEI |
| Jul 3, 2002 | 1.00 inquarter | Unicoi | — | 14:35 local · NCEI |
| Apr 28, 2002 | 1.75 ingolf ball | Marbleton | $5K | 17:25 local · NCEI |
| Apr 28, 2002 | 1.00 inquarter | 10 S Erwin | $5K | 16:00 local · NCEI |
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 |
|---|---|---|---|
| Unicoi | 9 | 9 | Mar 17, 2018 |
| Erwin | 6 | 6 | Apr 9, 2011 |
| Banner Hill | 2 | 2 | May 8, 2004 |
Questions about hail in Unicoi County
How often does it hail in Unicoi County, Tennessee?
20 hail reports have been logged in Unicoi County since 1967. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #93 of 96 Tennessee counties by number of reports.
When is hail season in Unicoi County?
Most reports come in April, May, June. April alone accounts for 30% of all reports.
What is the largest hail recorded in Unicoi County?
2.75 in (baseball size) on May 1, 1990. 5% of reports here were 2 inches or larger.
When did it last hail in Unicoi County?
The most recent report in this data is from April 30, 2025 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Unicoi County had in the last five years?
1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was April 30, 2025.
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.