Alert archive / Tennessee / Sullivan County
Weather alerts in Sullivan County, Tennessee, 2025
103 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sullivan County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 103
- Warnings
- 28
- Watches
- 12
- Advisories
- 37
- Busiest month
- February19 alerts
- Busiest day
- February 7, 20256 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 Sullivan County in 2025 had a tornado report inside them.
Sullivan County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 13 | 12 | 8% | 7 | 57% | 27 min |
| Flash flood warnings | 7 | 5 | 29% | 6 | 83% | 79 min |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Morristown, TN: tornado warnings | 28 | 2 | 93% | 3 | 67% | 11 min |
| NWS Morristown, TN: severe thunderstorm warnings | 231 | 187 | 19% | 300 | 84% | 22 min |
| NWS Morristown, TN: flash flood warnings | 66 | 36 | 45% | 66 | 85% | 70 min |
An office's figures cover every county it serves, including across state lines.
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 4, 3:31 AM EST | Winter Weather Advisory | MRX | 39 hr |
| Jan 8, 3:33 AM EST | Winter Storm Watch | MRX | 32 hr |
| Jan 8, 7:43 AM EST | Winter Weather Advisory | MRX | 5 hr |
| Jan 9, 11:46 AM EST | Winter Storm Warning | MRX | 43 hr |
| Jan 18, 3:50 AM EST | Winter Weather Advisory | MRX | 39 hr |
| Jan 18, 2:34 PM EST | Extreme Cold Watch | MRX | 13 hr |
| Jan 19, 3:37 AM EST | Cold Weather Advisory | MRX | 32 hr |
| Jan 20, 3:23 PM EST | Cold Weather Advisory | MRX | 43 hr |
| Feb 1, 12:30 PM EST | River Flood Advisory | MRX | 19 hr |
| Feb 6, 5:10 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Feb 6, 7:27 PM EST | Severe Thunderstorm Watch | SPC | 4 hr |
| Feb 6, 7:41 PM EST | Mesoscale Discussion | SPC | 94 min |
| Feb 6, 9:18 PM EST | Severe Thunderstorm Warning | MRX | 42 min |
| Feb 6, 9:52 PM EST | Severe Thunderstorm Warning | MRX | 38 min |
| Feb 6, 9:57 PM EST | Tornado Warning | MRX | 18 min |
| Feb 6, 10:15 PM EST | Severe Thunderstorm Warning | MRX | 24 min |
| Feb 10, 2:03 PM EST | Flood Watch | MRX | 61 hr |
| Feb 13, 2:46 PM EST | Flood Watch | MRX | 68 hr |
| Feb 15, 3:26 AM EST | Wind Advisory | MRX | 33 hr |
| Feb 15, 1:30 PM EST | Areal Flood Warning | MRX | 6 hr |
| Feb 15, 5:41 PM EST | Flash Flood Warning | MRX | 4 hr |
| Feb 15, 8:24 PM EST | River Flood Warning | MRX | 50 hr |
| Feb 15, 9:55 PM EST | Areal Flood Warning | MRX | 6 hr |
| Feb 16, 5:06 AM EST | Flash Flood Warning | MRX | 7 hr |
| Feb 16, 11:39 AM EST | Areal Flood Warning | MRX | 3 hr |
| Feb 17, 3:23 PM EST | Winter Weather Advisory | MRX | 3 days |
| Feb 20, 3:18 AM EST | Cold Weather Advisory | MRX | 31 hr |
| Feb 28, 8:50 PM EST | Red Flag Warning | MRX | 23 hr |
| Mar 3, 1:30 PM EST | Wind Advisory | MRX | 54 hr |
| Mar 15, 1:34 AM EDT | Wind Advisory | MRX | 30 hr |
| Mar 31, 6:34 AM EDT | Severe Thunderstorm Warning | MRX | 26 min |
| Apr 25, 9:14 PM EDT | Special Weather Statement | MRX | 31 min |
| May 2, 7:23 PM EDT | Severe Thunderstorm Warning | MRX | 14 min |
| May 2, 7:40 PM EDT | Special Weather Statement | MRX | 50 min |
| May 8, 3:30 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 8, 7:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| May 9, 4:56 AM EDT | Dense Fog Advisory | MRX | 4 hr |
| May 13, 3:55 PM EDT | Special Weather Statement | MRX | 50 min |
| May 13, 4:39 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| May 16, 10:26 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 11:10 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 16, 12:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 9:37 PM EDT | Tornado Watch | SPC | 6 hr |
| May 17, 2:29 AM EDT | Severe Thunderstorm Warning | MRX | 61 min |
| May 17, 3:18 AM EDT | Mesoscale Discussion | SPC | 87 min |
| May 20, 1:10 PM EDT | Tornado Watch | SPC | 5 hr |
| May 20, 3:42 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 20, 5:39 PM EDT | Special Weather Statement | MRX | 51 min |
| May 21, 12:52 AM EDT | Special Weather Statement | MRX | 38 min |
| May 31, 1:32 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 13, 8:06 PM EDT | Special Weather Statement | MRX | 39 min |
| Jun 17, 9:09 PM EDT | Severe Thunderstorm Warning | MRX | 66 min |
| Jun 17, 9:15 PM EDT | Special Weather Statement | MRX | 45 min |
| Jun 20, 3:12 AM EDT | Dense Fog Advisory | MRX | 7 hr |
| Jun 23, 11:42 AM EDT | Heat Advisory | MRX | 3 days |
| Jun 26, 12:14 PM EDT | Severe Thunderstorm Warning | MRX | 46 min |
| Jun 26, 12:27 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jun 26, 12:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 26, 2:08 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jun 27, 10:38 PM EDT | Flash Flood Warning | MRX | 3 hr |
| Jun 29, 1:07 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 12:52 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 1, 1:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 6:23 PM EDT | Special Weather Statement | MRX | 52 min |
| Jul 17, 7:00 AM EDT | Flood Watch | MRX | 41 hr |
| Jul 17, 9:00 PM EDT | Special Weather Statement | MRX | 45 min |
| Jul 21, 1:14 PM EDT | Areal Flood Advisory | MRX | 5 hr |
| Jul 22, 5:21 AM EDT | Dense Fog Advisory | MRX | 4 hr |
| Jul 27, 1:57 PM EDT | Special Weather Statement | MRX | 48 min |
| Jul 27, 2:05 PM EDT | Flash Flood Warning | MRX | 2 hr |
| Jul 28, 3:57 PM EDT | Severe Thunderstorm Warning | MRX | 23 min |
| Jul 30, 5:07 PM EDT | Areal Flood Advisory | MRX | 24 min |
| Jul 30, 5:31 PM EDT | Flash Flood Warning | MRX | 5 hr |
| Jul 30, 5:53 PM EDT | Areal Flood Advisory | MRX | 20 min |
| Jul 30, 6:13 PM EDT | Flash Flood Warning | MRX | 4 hr |
| Jul 30, 9:49 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jul 30, 10:47 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Aug 13, 3:43 AM EDT | Flood Watch | MRX | 11 hr |
| Aug 13, 9:50 AM EDT | Flash Flood Warning | MRX | 4 hr |
| Aug 13, 12:03 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 13, 1:21 PM EDT | Areal Flood Warning | MRX | 106 min |
| Aug 22, 7:51 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 23, 5:35 PM EDT | Special Weather Statement | MRX | 40 min |
| Aug 31, 5:34 PM EDT | Special Weather Statement | MRX | 41 min |
| Sep 4, 11:29 AM EDT | Severe Thunderstorm Warning | MRX | 46 min |
| Sep 4, 12:02 PM EDT | Severe Thunderstorm Warning | MRX | 43 min |
| Sep 4, 11:35 PM EDT | Dense Fog Advisory | MRX | 9 hr |
| Sep 6, 4:55 AM EDT | Special Weather Statement | MRX | 35 min |
| Sep 27, 4:04 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Oct 19, 4:12 PM EDT | Special Weather Statement | MRX | 48 min |
| Nov 4, 4:42 AM EST | Dense Fog Advisory | MRX | 5 hr |
| Nov 8, 6:23 AM EST | Dense Fog Advisory | MRX | 5 hr |
| Nov 9, 1:01 AM EST | Winter Weather Advisory | MRX | 51 hr |
| Nov 10, 7:03 AM EST | Winter Storm Watch | MRX | 3 min |
| Nov 20, 6:15 AM EST | Dense Fog Advisory | MRX | 5 hr |
| Dec 4, 12:14 PM EST | Winter Weather Advisory | MRX | 20 hr |
| Dec 7, 4:03 AM EST | Freezing Fog Advisory | MRX | 6 hr |
| Dec 10, 12:35 AM EST | Wind Advisory | MRX | 24 hr |
| Dec 13, 12:24 PM EST | Cold Weather Advisory | MRX | 46 hr |
| Dec 19, 12:26 AM EST | Special Weather Statement | MRX | 49 min |
| Dec 19, 12:45 AM EST | Severe Thunderstorm Warning | MRX | 45 min |
| Dec 19, 12:49 AM EST | Severe Thunderstorm Warning | MRX | 41 min |
| Dec 27, 11:43 PM EST | Wind Advisory | MRX | 43 hr |
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 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 11 |
| Special Weather Statement | 15 |
| Flooding | |
| Areal Flood Warning | 4 |
| Flash Flood Warning | 7 |
| River Flood Warning | 1 |
| Flood Watch | 4 |
| Areal Flood Advisory | 12 |
| River Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 6 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Extreme Cold Watch | 1 |
| Cold Weather Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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.