Jefferson City, Tennessee Hail Report and Map: September 18, 2026
Was there hail in Jefferson City, TN on September 18, 2026? Radar estimated hail up to 0.95 inch inside the town limits of Jefferson City on September 18, 2026 (Eastern time). Radar estimates of at least 0.5 inch covered 63% of the town. Across the report area, the maximum radar estimate was 1.67 inches. The strongest part of the swath was about 11 miles west of Morristown, TN. Radar detected hail aloft in this area between about 6:40 p.m. and 7:10 p.m. ET on September 18, 2026.
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Hail estimates at a glance
| Storm date (Eastern time) | September 18, 2026 (Friday) |
|---|---|
| Maximum radar estimate across the area | 1.67 inches; strongest part of the swath about 11 miles west of Morristown, TN |
| Maximum radar estimate inside Jefferson City | 0.95 inch |
| Share of Jefferson City with radar estimates of at least 0.5 inch | 63% |
| Approximate radar timing | Between about 6:40 p.m. and 7:10 p.m. ET on September 18, 2026 (Eastern time) |
| County coverage includes (0.5 inch or larger) | Jefferson County (26 sq mi) and Grainger County (12 sq mi) |
| Area with radar estimates of 0.5 inch or larger | about 38 square miles |
| Area with radar estimates of 1 inch or larger | about 8 square miles |
| Source | NOAA MRMS radar hail estimates (MESH) |
Which towns had hail on September 18, 2026?
Radar estimated hail of at least 0.5 inch inside these town limits, using U.S. Census boundaries. Each percentage is the share of town area with those estimates.
| Town | County | Maximum radar estimate inside town limits | Town area with estimates of at least 0.5 inch |
|---|---|---|---|
| Jefferson City, TN | Jefferson County | 0.95 inch | 63% |
Towns near the hail
The strongest part of the swath was within 15 miles of these towns. Distances and directions run from each town to that part of the swath.
- Morristown, TN: strongest radar estimates about 11 miles west of town
What time did radar detect hail?
Radar detected hail aloft in this area between about 6:40 p.m. and 7:10 p.m. ET on September 18, 2026. We used 13 NOAA radar hail detections in this area to estimate the window. We trim outlying detection times when enough are available, then round down to five-minute marks. It doesn't give an arrival time at an address.
Data source and limits
We use NOAA's MRMS radar product MESH (Maximum Estimated Size of Hail) for hail-size estimates. Each town's figure is the maximum inside its Census town limits. The percentage is the town area with estimates of at least 0.5 inch. A town's maximum isn't an estimate for every home. Each storm date covers one calendar day in Eastern time. A late-evening storm west of the Eastern time zone can appear under two dates. Radar estimates don't confirm hail on the ground or roof damage. Hail of 0.5 to 0.75 inch can damage roofs, especially older roofs. An estimate below 1 inch doesn't rule out damage. Read how we calculate sizes and times.