Alert archive / Tennessee / Hamilton County
Weather alerts in Hamilton County, Tennessee, 2026
109 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hamilton County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 109
- Warnings
- 31
- Watches
- 13
- Advisories
- 25
- Busiest month
- July23 alerts
- Busiest day
- June 22, 20269 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Hamilton County in 2026 had a tornado report inside them.
Hamilton County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 26 | 22 | 15% | 24 | 83% | 17 min |
| Flash flood warnings | 3 | 3 | 0% | 5 | 100% | 39 min |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Morristown, TN: tornado warnings | 10 | 1 | 90% | 3 | 33% | 3 min |
| NWS Morristown, TN: severe thunderstorm warnings | 182 | 146 | 20% | 226 | 89% | 22 min |
| NWS Morristown, TN: flash flood warnings | 81 | 55 | 32% | 128 | 84% | 70 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 7, 1:25 AM EST | Dense Fog Advisory | MRX | 9 hr |
| Jan 8, 5:10 AM EST | Dense Fog Advisory | MRX | 5 hr |
| Jan 9, 11:47 AM EST | Flood Watch | MRX | 24 hr |
| Jan 21, 12:27 PM EST | Winter Storm Watch | MRX | 45 hr |
| Jan 23, 9:54 AM EST | Ice Storm Warning | MRX | 48 hr |
| Jan 24, 6:54 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 24, 1:17 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 24, 11:49 PM EST | Cold Weather Advisory | MRX | 34 hr |
| Jan 25, 12:01 PM EST | Cold Weather Advisory | MRX | 48 hr |
| Jan 29, 12:50 PM EST | Winter Weather Advisory | MRX | 54 hr |
| Jan 29, 1:00 PM EST | Cold Weather Advisory | MRX | 71 hr |
| Feb 4, 4:01 AM EST | Dense Fog Advisory | MRX | 8 hr |
| Mar 9, 3:05 AM EDT | Dense Fog Advisory | MRX | 7 hr |
| Mar 11, 5:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Mar 15, 2:17 PM EDT | Wind Advisory | MRX | 18 hr |
| Mar 15, 9:22 PM EDT | Tornado Watch | SPC | 9 hr |
| Mar 15, 11:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 16, 1:41 AM EDT | Severe Thunderstorm Warning | MRX | 64 min |
| Mar 16, 2:41 AM EDT | Severe Thunderstorm Warning | MRX | 49 min |
| Mar 16, 3:20 AM EDT | Severe Thunderstorm Warning | MRX | 55 min |
| Apr 4, 6:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 4, 11:30 PM EDT | Special Weather Statement | MRX | 45 min |
| Apr 5, 12:11 AM EDT | Special Weather Statement | MRX | 49 min |
| Apr 16, 10:41 PM EDT | Special Weather Statement | MRX | 49 min |
| Apr 26, 12:52 AM EDT | Dense Fog Advisory | MRX | 9 hr |
| Apr 28, 3:41 AM EDT | Severe Thunderstorm Warning | MRX | 38 min |
| Apr 28, 5:16 AM EDT | Special Weather Statement | MRX | 44 min |
| May 6, 8:53 AM EDT | Special Weather Statement | MRX | 52 min |
| May 24, 12:57 PM EDT | Flood Watch | MRX | 13 hr |
| May 24, 5:09 PM EDT | Severe Thunderstorm Warning | MRX | 51 min |
| May 24, 5:14 PM EDT | Tornado Warning | MRX | 46 min |
| May 24, 6:19 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| May 25, 12:13 PM EDT | Flood Watch | MRX | 15 hr |
| May 25, 9:27 PM EDT | Special Weather Statement | MRX | 63 min |
| May 25, 10:03 PM EDT | Areal Flood Advisory | MRX | 117 min |
| May 25, 10:26 PM EDT | Flash Flood Warning | MRX | 2 hr |
| May 26, 9:35 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| May 29, 1:59 PM EDT | Flood Watch | MRX | 24 hr |
| Jun 7, 2:09 PM EDT | Flood Watch | MRX | 31 hr |
| Jun 12, 1:32 PM EDT | Special Weather Statement | MRX | 43 min |
| Jun 14, 12:36 PM EDT | Special Weather Statement | MRX | 39 min |
| Jun 14, 2:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 14, 4:53 PM EDT | Severe Thunderstorm Warning | MRX | 52 min |
| Jun 14, 5:35 PM EDT | Severe Thunderstorm Warning | MRX | 40 min |
| Jun 18, 12:20 PM EDT | Special Weather Statement | MRX | 40 min |
| Jun 22, 2:48 PM EDT | Special Weather Statement | MRX | 57 min |
| Jun 22, 3:01 PM EDT | Severe Thunderstorm Warning | MRX | 25 min |
| Jun 22, 3:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 22, 3:55 PM EDT | Severe Thunderstorm Warning | MRX | 35 min |
| Jun 22, 4:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 22, 5:30 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 22, 5:56 PM EDT | Severe Thunderstorm Warning | MRX | 49 min |
| Jun 22, 6:28 PM EDT | Severe Thunderstorm Warning | MRX | 31 min |
| Jun 22, 6:47 PM EDT | Severe Thunderstorm Warning | MRX | 43 min |
| Jun 29, 1:34 PM EDT | Heat Advisory | MRX | 5 days |
| Jul 1, 1:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 3, 12:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 3:20 PM EDT | Special Weather Statement | MRX | 40 min |
| Jul 3, 3:32 PM EDT | Severe Thunderstorm Warning | MRX | 43 min |
| Jul 3, 3:50 PM EDT | Severe Thunderstorm Warning | MRX | 40 min |
| Jul 3, 4:08 PM EDT | Flash Flood Warning | MRX | 3 hr |
| Jul 3, 4:30 PM EDT | Severe Thunderstorm Warning | MRX | 45 min |
| Jul 5, 1:26 PM EDT | Special Weather Statement | MRX | 49 min |
| Jul 5, 1:39 PM EDT | Severe Thunderstorm Warning | MRX | 51 min |
| Jul 5, 1:48 PM EDT | Severe Thunderstorm Warning | MRX | 42 min |
| Jul 5, 2:04 PM EDT | Areal Flood Advisory | MRX | 116 min |
| Jul 5, 2:14 PM EDT | Special Weather Statement | MRX | 46 min |
| Jul 5, 2:24 PM EDT | Special Weather Statement | MRX | 51 min |
| Jul 9, 11:44 AM EDT | Flood Watch | MRX | 4 days |
| Jul 10, 1:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 10, 1:49 PM EDT | Special Weather Statement | MRX | 41 min |
| Jul 10, 1:57 PM EDT | Severe Thunderstorm Warning | MRX | 33 min |
| Jul 19, 3:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 1:45 PM EDT | Flood Watch | MRX | 54 hr |
| Jul 23, 8:33 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 28, 8:29 AM EDT | Heat Advisory | MRX | 11 hr |
| Jul 28, 1:14 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 1, 4:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 1, 7:22 PM EDT | Special Weather Statement | MRX | 38 min |
| Aug 1, 8:11 PM EDT | Severe Thunderstorm Warning | MRX | 19 min |
| Aug 1, 9:17 PM EDT | Severe Thunderstorm Warning | MRX | 43 min |
| Aug 1, 10:37 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 5, 5:25 PM EDT | Special Weather Statement | MRX | 35 min |
| Aug 6, 4:09 PM EDT | Special Weather Statement | MRX | 36 min |
| Aug 7, 3:51 PM EDT | Special Weather Statement | MRX | 39 min |
| Aug 7, 4:16 PM EDT | Severe Thunderstorm Warning | MRX | 44 min |
| Aug 7, 4:33 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 7, 4:38 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 11, 5:46 PM EDT | Special Weather Statement | MRX | 44 min |
| Aug 11, 11:38 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 12, 12:20 AM EDT | Flash Flood Warning | MRX | 3 hr |
| Aug 14, 12:11 PM EDT | Heat Advisory | MRX | 3 days |
| Aug 17, 2:35 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 17, 3:59 PM EDT | Severe Thunderstorm Warning | MRX | 61 min |
| Aug 17, 5:28 PM EDT | Special Weather Statement | MRX | 47 min |
| Aug 17, 5:49 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 17, 6:03 PM EDT | Severe Thunderstorm Warning | MRX | 42 min |
| Aug 21, 12:12 AM EDT | Special Weather Statement | MRX | 48 min |
| Aug 21, 1:13 AM EDT | Special Weather Statement | MRX | 47 min |
| Sep 2, 12:32 AM EDT | Heat Advisory | MRX | 4 days |
| Sep 2, 1:58 PM EDT | Heat Advisory | MRX | 3 days |
| Sep 19, 1:42 PM EDT | Special Weather Statement | MRX | 63 min |
| Sep 19, 1:46 PM EDT | Severe Thunderstorm Warning | MRX | 59 min |
| Sep 20, 6:41 PM EDT | Severe Thunderstorm Warning | MRX | 49 min |
| Sep 20, 7:29 PM EDT | Special Weather Statement | MRX | 46 min |
| Sep 21, 3:07 PM EDT | Special Weather Statement | MRX | 53 min |
| Sep 21, 3:55 PM EDT | Severe Thunderstorm Warning | MRX | 35 min |
| Sep 23, 5:10 PM EDT | Areal Flood Advisory | MRX | 90 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 26 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 14 |
| Special Weather Statement | 26 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flood Watch | 7 |
| Areal Flood Advisory | 10 |
| Winter | |
| Ice Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Cold Weather Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.