Alert archive / Tennessee / Henderson County
Weather alerts in Henderson County, Tennessee, 2024
118 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Henderson County and its neighbors
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Alerts
- 118
- Warnings
- 25
- Watches
- 15
- Advisories
- 45
- Busiest month
- May33 alerts
- Busiest day
- April 2, 20248 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 3 tornado warnings covering Henderson County in 2024 had a tornado report inside them.
Henderson County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 15 | 12 | 20% | 6 | 100% | 12 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Memphis, TN: tornado warnings | 20 | 1 | 95% | 7 | 14% | 18 min |
| NWS Memphis, TN: severe thunderstorm warnings | 210 | 127 | 40% | 258 | 91% | 20 min |
| NWS Memphis, TN: flash flood warnings | 32 | 17 | 47% | 36 | 78% | 49 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 7, 2:16 PM CST | Wind Advisory | MEG | 57 hr |
| Jan 11, 2:26 AM CST | Wind Advisory | MEG | 45 hr |
| Jan 12, 2:54 PM CST | Winter Storm Watch | MEG | 36 hr |
| Jan 13, 2:48 PM CST | Winter Storm Warning | MEG | 54 hr |
| Jan 14, 3:05 AM CST | Wind Chill Advisory | MEG | 3 days |
| Jan 17, 2:58 PM CST | Winter Weather Advisory | MEG | 28 hr |
| Jan 18, 3:02 PM CST | Wind Chill Advisory | MEG | 66 hr |
| Jan 18, 5:49 PM CST | Freezing Fog Advisory | MEG | 13 hr |
| Jan 23, 3:08 AM CST | Flood Watch | MEG | 59 hr |
| Jan 24, 3:06 PM CST | Dense Fog Advisory | MEG | 20 hr |
| Jan 25, 9:04 PM CST | Dense Fog Advisory | MEG | 13 hr |
| Feb 12, 11:23 AM CST | Winter Weather Advisory | MEG | 11 hr |
| Feb 16, 3:45 PM CST | Special Weather Statement | MEG | 30 min |
| Feb 16, 3:57 PM CST | Severe Thunderstorm Warning | MEG | 48 min |
| Feb 26, 1:13 PM CST | Wind Advisory | MEG | 44 hr |
| Feb 28, 5:43 AM CST | Special Weather Statement | MEG | 32 min |
| Mar 3, 1:53 AM CST | Dense Fog Advisory | MEG | 7 hr |
| Mar 14, 7:35 PM CDT | Severe Thunderstorm Warning | MEG | 40 min |
| Mar 16, 1:00 AM CDT | Dense Fog Advisory | MEG | 8 hr |
| Mar 17, 3:25 AM CDT | Freeze Watch | MEG | 18 hr |
| Mar 17, 3:25 AM CDT | Freeze Warning | MEG | 30 hr |
| Mar 17, 9:15 PM CDT | Freeze Warning | MEG | 36 hr |
| Mar 24, 2:44 AM CDT | High Wind Watch | MEG | 12 hr |
| Mar 24, 2:55 PM CDT | Wind Advisory | MEG | 33 hr |
| Mar 26, 2:42 PM CDT | Frost Advisory | MEG | 18 hr |
| Mar 27, 1:58 PM CDT | Frost Advisory | MEG | 19 hr |
| Apr 2, 8:32 AM CDT | Mesoscale Discussion | SPC | 88 min |
| Apr 2, 9:05 AM CDT | Severe Thunderstorm Warning | MEG | 40 min |
| Apr 2, 9:14 AM CDT | Tornado Warning | MEG | 28 min |
| Apr 2, 9:37 AM CDT | Severe Thunderstorm Warning | MEG | 38 min |
| Apr 2, 9:50 AM CDT | Tornado Watch | SPC | 5 hr |
| Apr 2, 12:25 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 2, 2:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Apr 2, 3:08 PM CDT | Tornado Watch | SPC | 6 hr |
| Apr 5, 3:10 AM CDT | Frost Advisory | MEG | 29 hr |
| Apr 8, 12:05 AM CDT | Special Weather Statement | MEG | 25 min |
| Apr 8, 4:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 8, 4:46 PM CDT | Severe Thunderstorm Warning | MEG | 44 min |
| Apr 8, 5:29 PM CDT | Special Weather Statement | MEG | 31 min |
| Apr 8, 5:43 PM CDT | Severe Thunderstorm Warning | MEG | 47 min |
| Apr 10, 2:45 PM CDT | Wind Advisory | MEG | 26 hr |
| Apr 21, 9:51 AM CDT | Frost Advisory | MEG | 22 hr |
| Apr 29, 11:31 PM CDT | Dense Fog Advisory | MEG | 8 hr |
| May 3, 9:13 PM CDT | Dense Fog Advisory | MEG | 11 hr |
| May 8, 2:51 PM CDT | Tornado Watch | SPC | 5 hr |
| May 8, 3:07 PM CDT | Severe Thunderstorm Warning | MEG | 53 min |
| May 8, 3:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| May 8, 7:29 PM CDT | Mesoscale Discussion | SPC | 61 min |
| May 8, 8:13 PM CDT | Tornado Watch | SPC | 7 hr |
| May 8, 11:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| May 9, 1:26 AM CDT | Severe Thunderstorm Warning | MEG | 49 min |
| May 9, 2:10 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 12:44 PM CDT | Mesoscale Discussion | SPC | 61 min |
| May 14, 1:51 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 14, 5:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 14, 6:15 PM CDT | Special Weather Statement | MEG | 45 min |
| May 14, 6:45 PM CDT | Special Weather Statement | MEG | 30 min |
| May 18, 11:07 PM CDT | Dense Fog Advisory | MEG | 9 hr |
| May 22, 11:26 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 11:46 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 22, 1:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 22, 2:48 PM CDT | Severe Thunderstorm Warning | MEG | 42 min |
| May 22, 3:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 22, 3:23 PM CDT | Severe Thunderstorm Warning | MEG | 33 min |
| May 24, 11:03 AM CDT | Flood Watch | MEG | 64 hr |
| May 25, 3:27 AM CDT | Special Weather Statement | MEG | 33 min |
| May 25, 3:59 AM CDT | Special Weather Statement | MEG | 31 min |
| May 26, 5:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| May 26, 9:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 26, 9:43 PM CDT | Tornado Watch | SPC | 7 hr |
| May 27, 12:42 AM CDT | Special Weather Statement | MEG | 33 min |
| May 27, 12:53 AM CDT | Severe Thunderstorm Warning | MEG | 52 min |
| May 27, 12:58 AM CDT | Tornado Warning | MEG | 47 min |
| May 27, 1:19 AM CDT | Tornado Warning | MEG | 41 min |
| May 27, 1:26 AM CDT | Severe Thunderstorm Warning | MEG | 64 min |
| May 27, 1:38 AM CDT | Severe Thunderstorm Warning | MEG | 35 min |
| Jun 2, 5:07 AM CDT | Dense Fog Advisory | MEG | 4 hr |
| Jun 9, 1:43 AM CDT | Special Weather Statement | MEG | 47 min |
| Jun 9, 2:14 AM CDT | Special Weather Statement | MEG | 31 min |
| Jun 10, 12:37 AM CDT | Dense Fog Advisory | MEG | 8 hr |
| Jun 16, 12:12 PM CDT | Heat Advisory | MEG | 7 hr |
| Jun 22, 1:58 PM CDT | Heat Advisory | MEG | 30 hr |
| Jun 24, 2:54 AM CDT | Heat Advisory | MEG | 41 hr |
| Jun 28, 2:55 PM CDT | Heat Advisory | MEG | 30 hr |
| Jun 29, 2:56 PM CDT | Heat Advisory | MEG | 29 hr |
| Jul 2, 12:27 PM CDT | Excessive Heat Warning | MEG | 32 hr |
| Jul 2, 12:27 PM CDT | Heat Advisory | MEG | 14 hr |
| Jul 3, 3:58 AM CDT | Excessive Heat Warning | MEG | 40 hr |
| Jul 8, 2:56 PM CDT | Severe Thunderstorm Warning | MEG | 20 min |
| Jul 9, 12:21 AM CDT | Special Weather Statement | MEG | 39 min |
| Jul 9, 12:39 AM CDT | Severe Thunderstorm Warning | MEG | 19 min |
| Jul 11, 4:39 AM CDT | Dense Fog Advisory | MEG | 3 hr |
| Jul 14, 3:01 PM CDT | Heat Advisory | MEG | 29 hr |
| Jul 15, 1:56 PM CDT | Heat Advisory | MEG | 31 hr |
| Jul 28, 3:13 AM CDT | Heat Advisory | MEG | 42 hr |
| Jul 29, 3:27 AM CDT | Heat Advisory | MEG | 41 hr |
| Jul 30, 3:05 AM CDT | Excessive Heat Warning | MEG | 41 hr |
| Jul 30, 3:05 AM CDT | Heat Advisory | MEG | 32 hr |
| Jul 31, 2:27 AM CDT | Excessive Heat Warning | MEG | 42 hr |
| Jul 31, 2:27 AM CDT | Heat Advisory | MEG | 31 hr |
| Aug 14, 2:30 PM CDT | Heat Advisory | MEG | 55 hr |
| Aug 17, 4:37 AM CDT | Special Weather Statement | MEG | 38 min |
| Aug 17, 5:05 AM CDT | Special Weather Statement | MEG | 25 min |
| Aug 30, 3:46 PM CDT | Special Weather Statement | MEG | 29 min |
| Sep 1, 11:03 PM CDT | Dense Fog Advisory | MEG | 7 hr |
| Sep 11, 3:25 AM CDT | Flood Watch | MEG | 3 days |
| Sep 11, 2:56 PM CDT | Wind Advisory | MEG | 33 hr |
| Sep 17, 2:28 AM CDT | Dense Fog Advisory | MEG | 6 hr |
| Sep 24, 11:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 24, 1:01 PM CDT | Special Weather Statement | MEG | 29 min |
| Sep 26, 2:20 AM CDT | Flood Watch | MEG | 49 hr |
| Sep 30, 1:19 AM CDT | Dense Fog Advisory | MEG | 8 hr |
| Sep 30, 11:32 PM CDT | Dense Fog Advisory | MEG | 7 hr |
| Nov 10, 9:18 PM CST | Dense Fog Advisory | MEG | 8 hr |
| Nov 15, 4:04 AM CST | Dense Fog Advisory | MEG | 5 hr |
| Nov 19, 7:30 PM CST | Dense Fog Advisory | MEG | 11 hr |
| Dec 17, 2:52 PM CST | Flood Watch | MEG | 18 hr |
| Dec 18, 5:54 AM CST | Mesoscale Discussion | SPC | 3 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 | 15 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 16 |
| Flooding | |
| Flood Watch | 5 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 2 |
| Heat | |
| Excessive Heat Warning | 4 |
| Heat Advisory | 13 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Watch | 1 |
| Wind Advisory | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 17 |
| Freezing Fog Advisory | 1 |
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.