Anderson County was hit as recently as 2026-07-03, 28 days ago. Anderson County is hit in about half the years on record. The largest stone on record here is 1.75 inches, a golf ball and 1.8 times the National Weather Service's 1 inch severe criterion, reported on 2025-04-10 near Oak Ridge.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Tennessee. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-07-03, around Clinton. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Anderson County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->NOAA's Storm Prediction Center has logged 19 separate hail days here since 2010 -- 1.1 a year over 17 years of record. They carry 29 reports in total: most hail days here are logged from a single spot. 8 of those 17 years produced none at all. One year dominates the record: 2012 alone produced 6 of the 19 days. The last five years track the long-run rate, with 7 days since 2022.
No stone of 2 inches or more has ever been reported in Anderson County: all 19 hail days on record topped out below that. Golf-ball size is rarer still: 1.75 inches or more on 2 of the 19 days.
Across the whole of Tennessee, see the Tennessee hail map and history.
Reports cluster nearest Clinton -- 8 of the county's 19 hail days -- then Oak Ridge (8) and Norris (4). That one town is named on 42% of them.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Norris | 3 | 1.00″ |
| 6 NE Oak Ridge | 2 | 1.00″ |
| Clinton | 2 | 1.00″ |
| Oak Ridge | 2 | 1.00″ |
| 2 Ne Clinton | 1 | 1.75″ |
The season runs March through July: 17 of the 19 hail days on record fall in those 5 months (89%). April is the single busiest month, with 4 of them (21%). That peak sits inside the window rather than at either end. Hail has also been reported in February and August, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| February | 1 |
| March | 3 |
| April | 4 |
| May | 4 |
| June | 3 |
| July | 3 |
| August | 1 |
That day put 1 report on the map, the biggest 1 inch near Clinton. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-03 | 1.00″ | 1 |
| 2025-04-10 | 1.75″ | 3 |
| 2025-03-15 | 1.00″ | 4 |
| 2023-06-11 | 1.25″ | 2 |
| 2023-06-05 | 1.00″ | 1 |
| 2023-05-16 | 1.00″ | 2 |
| 2023-05-07 | 1.00″ | 1 |
| 2019-06-20 | 1.00″ | 1 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 1.75 inches, which is the red band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own: Knox County (37 hail days), Loudon County (14) and Campbell County (14). Anderson County sits in between.
Knox County · Loudon County · Campbell County
Back to the Tennessee hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Anderson County, Tennessee only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.