Hamilton County was hit as recently as 2026-07-03, 28 days ago. Hamilton County is hit in about half the years on record. The largest stone on record here is 2.5 inches, a tennis ball and 2.5 times the National Weather Service's 1 inch severe criterion, reported on 2012-03-02 near Chattanooga.
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 Graysville. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Hamilton 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 33 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: 2025 alone produced 5 of the 19 days. The last five years have run hotter than the long-run rate: 10 days since 2022, against 0.8 a year before that.
2 of the 19 days reached 2 inches or more -- 11%, or about one hail day in 10, the last on 2012-03-02. They land in the same month as everything else, March. 7 of the 19 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Tennessee, see the Tennessee hail map and history.
Reports cluster nearest Chattanooga -- 7 of the county's 19 hail days -- then Ooltewah (3), East Brainerd (3), Shady Grove (2) and Soddy-Daisy (2). Beyond those, NOAA names Red Bank on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Chattanooga | 4 | 2.50″ |
| Ooltewah | 2 | 1.75″ |
| 3 S Shady Grove | 2 | 1.25″ |
| 4 SSE Chattanooga | 1 | 1.75″ |
| Harrison | 1 | 1.75″ |
The season runs March through June: 17 of the 19 hail days on record fall in those 4 months (89%). March is the single busiest month, with 6 of them (32%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in July and August, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| March | 6 |
| April | 3 |
| May | 4 |
| June | 4 |
| July | 1 |
| August | 1 |
That day put 1 report on the map, the biggest 1 inch near Graysville. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-03 | 1.00″ | 1 |
| 2025-05-12 | 1.25″ | 1 |
| 2025-05-08 | 1.00″ | 2 |
| 2025-05-02 | 1.00″ | 3 |
| 2025-04-10 | 1.25″ | 2 |
| 2025-03-15 | 1.00″ | 2 |
| 2024-08-17 | 1.00″ | 1 |
| 2023-06-25 | 1.75″ | 2 |
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 2.5 inches, which is the purple band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own, over the state line included: Bradley County (18 hail days), Marion County (16), McMinn County (20) and Dade County, Georgia (13). Hamilton County sits in between.
Bradley County · Marion County · McMinn County · Dade County, Georgia
Back to the Tennessee hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Hamilton County, Tennessee only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.