Alert archive / Tennessee / Marion County
Weather alerts in Marion County, Tennessee, 2024
102 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Marion County and its neighbors
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Alerts
- 102
- Warnings
- 24
- Watches
- 14
- Advisories
- 26
- Busiest month
- May32 alerts
- Busiest day
- May 9, 202414 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 Marion County in 2024 had a tornado report inside them.
Marion County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 17 | 10 | 41% | 8 | 100% | 27 min |
| Flash flood warnings | 3 | 3 | 0% | 0 |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Morristown, TN: tornado warnings | 18 | 3 | 83% | 4 | 100% | 11 min |
| NWS Morristown, TN: severe thunderstorm warnings | 189 | 140 | 26% | 229 | 86% | 22 min |
| NWS Morristown, TN: flash flood warnings | 61 | 35 | 43% | 92 | 76% | 75 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 8, 2:45 AM CST | Wind Advisory | MRX | 57 hr |
| Jan 11, 2:21 AM CST | Wind Advisory | MRX | 60 hr |
| Jan 12, 11:04 AM CST | Special Weather Statement | MRX | 41 min |
| Jan 13, 2:39 AM CST | Winter Storm Watch | MRX | 24 hr |
| Jan 14, 2:43 AM CST | Winter Storm Warning | MRX | 51 hr |
| Jan 15, 7:32 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 16, 2:22 AM CST | Wind Chill Advisory | MRX | 9 hr |
| Jan 16, 2:22 AM CST | Wind Chill Advisory | MRX | 33 hr |
| Jan 17, 2:18 PM CST | Winter Weather Advisory | MRX | 64 hr |
| Jan 19, 2:39 AM CST | Wind Chill Advisory | MRX | 54 hr |
| Jan 23, 1:20 PM CST | Flood Watch | MRX | 53 hr |
| Jan 25, 5:02 AM CST | Dense Fog Advisory | MRX | 3 hr |
| Jan 25, 9:07 AM CST | Dense Fog Advisory | MRX | 113 min |
| Jan 26, 2:16 PM CST | Flood Watch | MRX | 23 hr |
| Jan 27, 2:44 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Feb 11, 1:41 PM CST | Flood Watch | MRX | 21 hr |
| Feb 12, 2:29 PM CST | Special Weather Statement | MRX | 46 min |
| Feb 12, 4:32 PM CST | Special Weather Statement | MRX | 58 min |
| Feb 26, 2:00 PM CST | Wind Advisory | MRX | 52 hr |
| Feb 28, 8:56 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 28, 9:58 AM CST | Severe Thunderstorm Warning | MRX | 47 min |
| Mar 3, 12:48 AM CST | Dense Fog Advisory | MRX | 7 hr |
| Mar 14, 11:42 PM CDT | Special Weather Statement | MRX | 48 min |
| Mar 15, 1:16 AM CDT | Severe Thunderstorm Warning | MRX | 29 min |
| Mar 15, 1:52 AM CDT | Special Weather Statement | MRX | 23 min |
| Mar 15, 4:58 AM CDT | Severe Thunderstorm Warning | MRX | 32 min |
| Mar 24, 1:51 PM CDT | Wind Advisory | MRX | 44 hr |
| Apr 2, 4:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 2, 5:07 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 5, 2:18 PM CDT | Frost Advisory | MRX | 19 hr |
| May 1, 2:16 AM CDT | Dense Fog Advisory | MRX | 7 hr |
| May 6, 12:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 7, 7:23 PM CDT | Special Weather Statement | MRX | 52 min |
| May 8, 1:28 AM CDT | Flood Watch | MRX | 30 hr |
| May 8, 3:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| May 8, 4:14 PM CDT | Tornado Watch | SPC | 7 hr |
| May 8, 7:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 8, 8:30 PM CDT | Severe Thunderstorm Warning | MRX | 60 min |
| May 8, 8:57 PM CDT | Severe Thunderstorm Warning | MRX | 63 min |
| May 8, 9:06 PM CDT | Flash Flood Warning | MRX | 4 hr |
| May 8, 9:20 PM CDT | Severe Thunderstorm Warning | MRX | 55 min |
| May 8, 10:11 PM CDT | Tornado Watch | SPC | 5 hr |
| May 9, 2:10 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 9, 3:02 AM CDT | Tornado Watch | SPC | 7 hr |
| May 9, 3:42 AM CDT | Flash Flood Warning | MRX | 6 hr |
| May 9, 4:11 AM CDT | Severe Thunderstorm Warning | MRX | 49 min |
| May 9, 4:23 AM CDT | Tornado Warning | MRX | 21 min |
| May 9, 4:26 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 9, 8:27 AM CDT | River Flood Warning | MRX | 50 hr |
| May 9, 10:04 AM CDT | Areal Flood Advisory | MRX | 116 min |
| May 14, 5:59 PM CDT | Special Weather Statement | MRX | 46 min |
| May 14, 6:39 PM CDT | Special Weather Statement | MRX | 51 min |
| May 14, 7:29 PM CDT | Special Weather Statement | MRX | 46 min |
| May 24, 2:07 PM CDT | Severe Thunderstorm Warning | MRX | 24 min |
| May 25, 3:22 AM CDT | Special Weather Statement | HUN | 23 min |
| May 25, 6:56 AM CDT | Special Weather Statement | MRX | 49 min |
| May 25, 7:02 AM CDT | Special Weather Statement | MRX | 43 min |
| May 26, 9:43 PM CDT | Tornado Watch | SPC | 7 hr |
| May 27, 12:52 AM CDT | Mesoscale Discussion | SPC | 113 min |
| May 27, 2:26 AM CDT | Severe Thunderstorm Warning | MRX | 49 min |
| May 27, 2:47 AM CDT | Mesoscale Discussion | SPC | 118 min |
| May 27, 3:03 AM CDT | Severe Thunderstorm Warning | MRX | 57 min |
| Jun 3, 5:32 PM CDT | Special Weather Statement | MRX | 28 min |
| Jun 5, 9:49 PM CDT | Special Weather Statement | MRX | 41 min |
| Jun 26, 5:26 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Jun 30, 11:14 AM CDT | Special Weather Statement | MRX | 31 min |
| Jul 4, 2:57 AM CDT | Heat Advisory | MRX | 16 hr |
| Jul 16, 2:49 PM CDT | Special Weather Statement | MRX | 41 min |
| Jul 16, 3:46 PM CDT | Severe Thunderstorm Warning | MRX | 44 min |
| Jul 21, 6:43 PM CDT | Special Weather Statement | MRX | 47 min |
| Jul 21, 7:59 PM CDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 22, 4:02 PM CDT | Special Weather Statement | MRX | 43 min |
| Jul 29, 2:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 30, 2:36 AM CDT | Flood Watch | MRX | 4 days |
| Jul 30, 1:18 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 30, 4:49 PM CDT | Severe Thunderstorm Warning | MRX | 56 min |
| Aug 1, 1:56 AM CDT | Heat Advisory | MRX | 17 hr |
| Aug 16, 4:08 PM CDT | Special Weather Statement | MRX | 52 min |
| Aug 17, 1:32 PM CDT | Severe Thunderstorm Warning | MRX | 43 min |
| Aug 17, 1:49 PM CDT | Severe Thunderstorm Warning | MRX | 20 min |
| Aug 17, 1:51 PM CDT | Special Weather Statement | MRX | 39 min |
| Aug 17, 2:07 PM CDT | Severe Thunderstorm Warning | MRX | 24 min |
| Aug 17, 2:27 PM CDT | Severe Thunderstorm Warning | MRX | 48 min |
| Aug 17, 2:35 PM CDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 17, 2:40 PM CDT | Severe Thunderstorm Warning | MRX | 35 min |
| Aug 17, 2:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Sep 1, 11:32 PM CDT | Dense Fog Advisory | MRX | 8 hr |
| Sep 24, 1:55 PM CDT | Flood Watch | MRX | 71 hr |
| Sep 25, 12:38 PM CDT | High Wind Watch | MRX | 23 hr |
| Sep 25, 8:40 PM CDT | High Wind Warning | MRX | 55 hr |
| Sep 27, 3:18 AM CDT | Areal Flood Advisory | MRX | 5 hr |
| Sep 27, 6:44 AM CDT | Flash Flood Warning | MRX | 4 hr |
| Oct 2, 3:57 AM CDT | Dense Fog Advisory | MRX | 4 hr |
| Oct 2, 9:05 PM CDT | Dense Fog Advisory | MRX | 12 hr |
| Oct 13, 10:57 PM CDT | Special Weather Statement | MRX | 33 min |
| Oct 13, 11:08 PM CDT | Special Weather Statement | MRX | 37 min |
| Nov 6, 9:33 PM CST | Dense Fog Advisory | MRX | 6 hr |
| Dec 9, 6:11 PM CST | Dense Fog Advisory | MRX | 9 hr |
| Dec 18, 2:18 AM CST | Dense Fog Advisory | MRX | 6 hr |
| Dec 18, 11:43 AM CST | Special Weather Statement | MRX | 47 min |
| Dec 29, 12:48 AM CST | Special Weather Statement | MRX | 57 min |
| Dec 30, 1:37 PM CST | Wind Advisory | MRX | 28 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 | 17 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 14 |
| Special Weather Statement | 24 |
| Flooding | |
| Flash Flood Warning | 3 |
| River Flood Warning | 1 |
| Flood Watch | 6 |
| Areal Flood Advisory | 4 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Frost Advisory | 1 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.