Alert archive / Tennessee / Roane County
Weather alerts in Roane County, Tennessee, 2026
97 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Roane County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 97
- Warnings
- 19
- Watches
- 12
- Advisories
- 38
- Busiest month
- August22 alerts
- Busiest day
- August 17, 20265 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Roane County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 13 | 11 | 15% | 3 | 100% | 33 min |
| Flash flood warnings | 5 | 5 | 0% | 4 | 25% | 13 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 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, 1:17 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 24, 6:45 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 24, 11:49 PM EST | Cold Weather Advisory | MRX | 34 hr |
| Jan 25, 10:50 AM EST | Areal Flood Advisory | MRX | 6 hr |
| Jan 25, 12:01 PM EST | Cold Weather Advisory | MRX | 48 hr |
| Jan 25, 1:54 PM EST | Areal Flood Advisory | MRX | 3 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 |
| Feb 26, 4:52 AM EST | Areal Flood Advisory | MRX | 4 hr |
| Mar 7, 2:44 PM EST | Mesoscale Discussion | SPC | 2 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 16, 12:41 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 16, 1:41 AM EDT | Severe Thunderstorm Warning | MRX | 64 min |
| Mar 16, 1:52 AM EDT | Severe Thunderstorm Warning | MRX | 53 min |
| Mar 16, 2:40 AM EDT | Severe Thunderstorm Warning | MRX | 65 min |
| Mar 21, 3:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Apr 4, 6:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 25, 5:13 PM EDT | Special Weather Statement | MRX | 32 min |
| Apr 26, 12:52 AM EDT | Dense Fog Advisory | MRX | 9 hr |
| May 20, 1:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| May 23, 8:15 PM EDT | Special Weather Statement | MRX | 45 min |
| May 24, 12:57 PM EDT | Flood Watch | MRX | 13 hr |
| May 24, 4:33 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| May 24, 7:08 PM EDT | Flash Flood Warning | MRX | 3 hr |
| May 25, 12:13 PM EDT | Flood Watch | MRX | 15 hr |
| May 29, 1:59 PM EDT | Flood Watch | MRX | 24 hr |
| May 30, 8:25 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jun 7, 2:09 PM EDT | Flood Watch | MRX | 31 hr |
| Jun 22, 3:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 22, 11:52 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jun 27, 9:44 AM EDT | Flood Watch | MRX | 28 hr |
| Jun 28, 4:03 AM EDT | Flash Flood Warning | MRX | 3 hr |
| Jun 28, 10:40 AM EDT | Special Weather Statement | MRX | 65 min |
| Jun 28, 11:19 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jun 29, 1:34 PM EDT | Heat Advisory | MRX | 5 days |
| Jul 3, 12:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 6:11 PM EDT | Severe Thunderstorm Warning | MRX | 49 min |
| Jul 3, 6:26 PM EDT | Severe Thunderstorm Warning | MRX | 49 min |
| Jul 3, 6:54 PM EDT | Severe Thunderstorm Warning | MRX | 51 min |
| Jul 5, 12:43 PM EDT | Severe Thunderstorm Warning | MRX | 47 min |
| Jul 6, 7:39 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jul 7, 8:11 PM EDT | Special Weather Statement | MRX | 49 min |
| Jul 9, 11:44 AM EDT | Flood Watch | MRX | 4 days |
| Jul 13, 1:06 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 17, 3:50 PM EDT | Flash Flood Warning | MRX | 97 min |
| Jul 17, 4:51 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jul 19, 1:54 PM EDT | Special Weather Statement | MRX | 36 min |
| Jul 19, 3:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 7:26 PM EDT | Areal Flood Advisory | MRX | 16 min |
| Jul 19, 7:42 PM EDT | Flash Flood Warning | MRX | 2 hr |
| Jul 21, 1:45 PM EDT | Flood Watch | MRX | 54 hr |
| Jul 22, 11:08 AM EDT | Areal Flood Advisory | MRX | 5 hr |
| Jul 22, 1:13 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 22, 5:12 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jul 22, 5:37 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 5, 7:40 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 8, 3:11 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 10, 4:11 AM EDT | Dense Fog Advisory | MRX | 6 hr |
| Aug 11, 5:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 7:06 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 11, 8:12 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 11:34 PM EDT | Flash Flood Warning | MRX | 3 hr |
| Aug 12, 2:38 AM EDT | Flood Watch | MRX | 29 hr |
| Aug 14, 12:11 PM EDT | Heat Advisory | MRX | 3 days |
| Aug 15, 1:06 PM EDT | Special Weather Statement | MRX | 39 min |
| Aug 15, 1:25 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 17, 1:49 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 17, 2:35 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 17, 4:13 PM EDT | Severe Thunderstorm Warning | MRX | 62 min |
| Aug 17, 4:33 PM EDT | Severe Thunderstorm Warning | MRX | 57 min |
| Aug 17, 5:54 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 20, 7:07 AM EDT | Special Weather Statement | MRX | 38 min |
| Aug 20, 7:49 PM EDT | Severe Thunderstorm Warning | MRX | 56 min |
| Aug 20, 8:56 PM EDT | Special Weather Statement | MRX | 49 min |
| Aug 20, 10:00 PM EDT | Severe Thunderstorm Warning | MRX | 15 min |
| Aug 21, 7:13 PM EDT | Severe Thunderstorm Warning | MRX | 35 min |
| Aug 22, 7:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Sep 2, 12:32 AM EDT | Heat Advisory | MRX | 4 days |
| Sep 2, 1:58 PM EDT | Heat Advisory | MRX | 3 days |
| Sep 5, 1:03 PM EDT | Severe Thunderstorm Warning | MRX | 57 min |
| Sep 5, 1:48 PM EDT | Special Weather Statement | MRX | 57 min |
| Sep 5, 4:10 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Sep 13, 3:38 AM EDT | Dense Fog Advisory | MRX | 5 hr |
| Sep 18, 3:26 PM EDT | Special Weather Statement | MRX | 34 min |
| Sep 21, 7:49 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Sep 21, 2:49 PM EDT | Special Weather Statement | MRX | 41 min |
| Sep 22, 4:10 AM EDT | Areal Flood Advisory | MRX | 2 hr |
| Sep 22, 4:21 AM EDT | Special Weather Statement | MRX | 39 min |
| Sep 22, 6:07 AM EDT | Areal Flood Advisory | MRX | 53 min |
| Sep 22, 8:46 PM EDT | Special Weather Statement | MRX | 44 min |
| Sep 23, 7:17 PM EDT | Areal Flood Advisory | MRX | 118 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 | 13 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 13 |
| Flooding | |
| Flash Flood Warning | 5 |
| Flood Watch | 8 |
| Areal Flood Advisory | 23 |
| Winter | |
| Ice Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Cold Weather Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
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.