Alert archive / Mississippi / DeSoto County
Weather alerts in DeSoto County, Mississippi, 2021
195 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
DeSoto County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 195
- Warnings
- 41
- Watches
- 22
- Advisories
- 75
- Busiest month
- March40 alerts
- Busiest day
- December 11, 202110 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 2 tornado warnings covering DeSoto County in 2021 had a tornado report inside them.
DeSoto County, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 0 | ||
| Severe thunderstorm warnings | 18 | 11 | 39% | 8 | 88% | 20 min |
| Flash flood warnings | 12 | 7 | 42% | 2 | 50% | 20 min |
Each office's whole area, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Memphis, TN: tornado warnings | 83 | 35 | 58% | 62 | 89% | 22 min |
| NWS Memphis, TN: severe thunderstorm warnings | 223 | 111 | 50% | 326 | 72% | 22 min |
| NWS Memphis, TN: flash flood warnings | 92 | 56 | 39% | 111 | 86% | 108 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 15, 3:40 AM CST | Wind Advisory | MEG | 14 hr |
| Jan 24, 6:14 PM CST | Dense Fog Advisory | MEG | 12 hr |
| Jan 25, 3:09 PM CST | Severe Thunderstorm Warning | MEG | 38 min |
| Jan 25, 4:01 PM CST | Severe Thunderstorm Warning | MEG | 29 min |
| Jan 25, 7:59 PM CST | Dense Fog Advisory | MEG | 13 hr |
| Jan 30, 2:46 PM CST | Wind Advisory | MEG | 8 hr |
| Feb 9, 4:01 AM CST | Winter Storm Watch | MEG | 33 hr |
| Feb 9, 2:54 PM CST | Ice Storm Warning | MEG | 45 hr |
| Feb 10, 10:36 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 11, 4:02 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 12, 12:40 AM CST | Winter Weather Advisory | MEG | 5 hr |
| Feb 12, 3:17 PM CST | Winter Storm Watch | MEG | 24 hr |
| Feb 13, 2:53 PM CST | Winter Storm Warning | MEG | 54 hr |
| Feb 15, 5:57 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 15, 3:02 PM CST | Wind Chill Advisory | MEG | 21 hr |
| Feb 15, 8:48 PM CST | Winter Storm Watch | MEG | 19 hr |
| Feb 16, 4:15 AM CST | Winter Storm Warning | MEG | 53 hr |
| Feb 17, 9:15 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 17, 3:22 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 18, 9:07 AM CST | Winter Weather Advisory | MEG | 6 hr |
| Feb 18, 2:54 PM CST | Wind Chill Advisory | MEG | 18 hr |
| Feb 26, 9:48 PM CST | Areal Flood Advisory | MEG | 3 hr |
| Feb 27, 12:39 AM CST | Areal Flood Advisory | MEG | 3 hr |
| Feb 27, 2:55 AM CST | Flood Watch | MEG | 56 hr |
| Feb 27, 9:03 PM CST | Dense Fog Advisory | MEG | 7 hr |
| Feb 28, 1:01 PM CST | Mesoscale Discussion | SPC | 119 min |
| Feb 28, 2:22 PM CST | Tornado Watch | SPC | 8 hr |
| Feb 28, 4:40 PM CST | Mesoscale Discussion | SPC | 95 min |
| Feb 28, 6:27 PM CST | Mesoscale Discussion | SPC | 93 min |
| Mar 1, 2:06 AM CST | Areal Flood Warning | MEG | 3 hr |
| Mar 1, 3:32 AM CST | Areal Flood Advisory | MEG | 3 hr |
| Mar 3, 3:19 AM CST | Freezing Fog Advisory | MEG | 6 hr |
| Mar 3, 10:19 AM CST | River Flood Advisory | MEG | 40 days |
| Mar 17, 5:34 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Mar 17, 5:53 AM CDT | Tornado Watch | SPC | 7 hr |
| Mar 17, 7:38 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Mar 17, 8:24 AM CDT | Areal Flood Advisory | MEG | 2 hr |
| Mar 17, 9:04 AM CDT | Flash Flood Warning | MEG | 3 hr |
| Mar 17, 12:57 PM CDT | Tornado Watch | SPC | 6 hr |
| Mar 17, 6:09 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Mar 22, 8:52 PM CDT | Wind Advisory | MEG | 19 hr |
| Mar 25, 5:06 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Mar 25, 6:00 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Mar 25, 6:01 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Mar 27, 2:05 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Mar 27, 2:44 AM CDT | Flash Flood Watch | MEG | 24 hr |
| Mar 27, 4:51 AM CDT | Special Weather Statement | MEG | 24 min |
| Mar 27, 5:13 AM CDT | Flash Flood Warning | MEG | 3 hr |
| Mar 27, 5:34 AM CDT | Severe Thunderstorm Warning | MEG | 41 min |
| Mar 27, 9:01 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Mar 27, 11:55 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 27, 1:51 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 27, 6:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 27, 7:54 PM CDT | Special Weather Statement | MEG | 21 min |
| Mar 27, 8:26 PM CDT | Severe Thunderstorm Warning | MEG | 11 min |
| Mar 27, 8:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Mar 27, 9:01 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 27, 9:53 PM CDT | Severe Thunderstorm Warning | MEG | 52 min |
| Mar 27, 10:31 PM CDT | Tornado Warning | MEG | 44 min |
| Mar 27, 10:39 PM CDT | Severe Thunderstorm Warning | MEG | 36 min |
| Mar 27, 10:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Mar 27, 10:49 PM CDT | Flash Flood Warning | MEG | 3 hr |
| Mar 30, 7:50 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Mar 30, 7:56 PM CDT | Flash Flood Warning | MEG | 3 hr |
| Mar 30, 9:54 PM CDT | Flash Flood Warning | MEG | 3 hr |
| Mar 31, 5:31 AM CDT | Freeze Watch | MEG | 9 hr |
| Mar 31, 5:31 AM CDT | Freeze Warning | MEG | 27 hr |
| Mar 31, 2:34 PM CDT | Freeze Warning | MEG | 42 hr |
| Apr 3, 1:24 AM CDT | Frost Advisory | MEG | 8 hr |
| Apr 7, 11:20 AM CDT | Wind Advisory | MEG | 8 hr |
| Apr 7, 5:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 7, 6:21 PM CDT | Special Weather Statement | MEG | 24 min |
| Apr 7, 7:23 PM CDT | Areal Flood Advisory | MEG | 2 hr |
| Apr 7, 8:21 PM CDT | Areal Flood Advisory | MEG | 91 min |
| Apr 9, 1:25 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 9, 3:10 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 9, 3:42 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 25, 3:00 AM CDT | Dense Fog Advisory | MEG | 6 hr |
| May 3, 1:31 AM CDT | Special Weather Statement | MEG | 29 min |
| May 3, 1:45 AM CDT | Severe Thunderstorm Warning | MEG | 45 min |
| May 3, 1:56 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 3, 5:57 AM CDT | Areal Flood Advisory | MEG | 110 min |
| May 4, 4:47 AM CDT | Areal Flood Advisory | MEG | 73 min |
| May 4, 11:58 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 4, 12:18 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 4, 4:10 PM CDT | Special Weather Statement | MEG | 35 min |
| May 6, 4:13 PM CDT | Special Weather Statement | MEG | 32 min |
| May 6, 4:43 PM CDT | Special Weather Statement | MEG | 32 min |
| May 8, 3:13 PM CDT | Wind Advisory | MEG | 26 hr |
| May 9, 12:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| May 9, 2:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 9, 3:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| May 9, 5:21 PM CDT | Severe Thunderstorm Warning | MEG | 24 min |
| May 9, 5:39 PM CDT | Severe Thunderstorm Warning | MEG | 36 min |
| May 9, 5:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| May 27, 9:45 PM CDT | Special Weather Statement | MEG | 30 min |
| Jun 1, 9:58 PM CDT | Areal Flood Advisory | MEG | 2 hr |
| Jun 5, 4:49 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jun 7, 6:54 PM CDT | Severe Thunderstorm Warning | MEG | 51 min |
| Jun 7, 7:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 7, 7:40 PM CDT | Severe Thunderstorm Warning | MEG | 37 min |
| Jun 8, 4:25 AM CDT | Flash Flood Watch | MEG | 4 days |
| Jun 8, 7:47 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jun 8, 9:20 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jun 9, 1:53 AM CDT | Areal Flood Advisory | MEG | 4 hr |
| Jun 9, 5:11 AM CDT | Areal Flood Warning | MEG | 99 min |
| Jun 9, 6:50 AM CDT | Flash Flood Warning | MEG | 3 hr |
| Jun 9, 9:21 AM CDT | Flash Flood Warning | MEG | 3 hr |
| Jun 10, 2:57 AM CDT | Areal Flood Advisory | MEG | 29 min |
| Jun 13, 2:29 PM CDT | Special Weather Statement | MEG | 31 min |
| Jun 26, 2:19 PM CDT | Special Weather Statement | MEG | 11 min |
| Jun 30, 2:53 PM CDT | Areal Flood Advisory | MEG | 112 min |
| Jul 1, 4:09 PM CDT | Areal Flood Advisory | MEG | 11 min |
| Jul 1, 4:20 PM CDT | Flash Flood Warning | MEG | 55 min |
| Jul 1, 6:17 PM CDT | Special Weather Statement | MEG | 28 min |
| Jul 1, 6:18 PM CDT | Special Weather Statement | MEG | 27 min |
| Jul 8, 11:45 PM CDT | Special Weather Statement | MEG | 30 min |
| Jul 9, 12:14 AM CDT | Severe Thunderstorm Warning | MEG | 13 min |
| Jul 9, 12:32 AM CDT | Special Weather Statement | MEG | 28 min |
| Jul 9, 10:06 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jul 9, 11:08 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jul 9, 12:52 PM CDT | Flash Flood Warning | MEG | 3 hr |
| Jul 9, 1:19 PM CDT | Severe Thunderstorm Warning | MEG | 41 min |
| Jul 11, 4:27 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jul 11, 5:09 AM CDT | Flash Flood Warning | MEG | 2 hr |
| Jul 16, 5:02 PM CDT | Special Weather Statement | MEG | 28 min |
| Jul 24, 4:13 AM CDT | Heat Advisory | MEG | 15 hr |
| Jul 24, 2:24 PM CDT | Heat Advisory | MEG | 29 hr |
| Jul 25, 1:58 PM CDT | Heat Advisory | MEG | 29 hr |
| Jul 26, 2:36 PM CDT | Heat Advisory | MEG | 28 hr |
| Jul 28, 2:38 PM CDT | Heat Advisory | MEG | 29 hr |
| Jul 29, 2:51 PM CDT | Heat Advisory | MEG | 29 hr |
| Jul 30, 2:41 AM CDT | Heat Advisory | MEG | 41 hr |
| Jul 31, 9:48 AM CDT | Excessive Heat Warning | MEG | 10 hr |
| Aug 8, 2:21 PM CDT | Heat Advisory | MEG | 4 days |
| Aug 13, 2:00 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Aug 13, 2:00 PM CDT | Special Weather Statement | MEG | 45 min |
| Aug 13, 2:51 PM CDT | Flash Flood Warning | MEG | 3 hr |
| Aug 13, 10:13 PM CDT | Dense Fog Advisory | MEG | 10 hr |
| Aug 18, 1:20 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 22, 3:08 PM CDT | Heat Advisory | MEG | 29 hr |
| Aug 23, 3:09 AM CDT | Heat Advisory | MEG | 41 hr |
| Aug 24, 3:07 PM CDT | Heat Advisory | MEG | 29 hr |
| Aug 28, 2:42 PM CDT | Flash Flood Watch | MEG | 66 hr |
| Aug 29, 2:32 PM CDT | Wind Advisory | MEG | 36 hr |
| Sep 18, 5:49 AM CDT | Areal Flood Advisory | MEG | 4 hr |
| Sep 18, 6:24 AM CDT | Flash Flood Watch | MEG | 56 hr |
| Sep 18, 7:54 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Sep 18, 9:32 AM CDT | Areal Flood Advisory | MEG | 118 min |
| Sep 18, 10:40 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Sep 20, 2:59 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Sep 21, 11:51 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 2, 9:50 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Oct 5, 12:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 6, 10:39 PM CDT | Dense Fog Advisory | MEG | 10 hr |
| Oct 15, 11:14 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 15, 12:28 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Oct 15, 2:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Oct 15, 5:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Oct 15, 5:31 PM CDT | Severe Thunderstorm Warning | MEG | 44 min |
| Oct 15, 5:56 PM CDT | Tornado Warning | MEG | 18 min |
| Oct 15, 6:21 PM CDT | Severe Thunderstorm Warning | MEG | 18 min |
| Nov 3, 3:26 AM CDT | Frost Advisory | MEG | 30 hr |
| Nov 3, 3:26 AM CDT | Freeze Watch | MEG | 24 hr |
| Nov 4, 3:14 AM CDT | Freeze Warning | MEG | 30 hr |
| Nov 7, 2:23 AM CST | Dense Fog Advisory | MEG | 5 hr |
| Nov 10, 6:12 AM CST | Dense Fog Advisory | MEG | 2 hr |
| Nov 12, 3:57 AM CST | Frost Advisory | MEG | 24 hr |
| Nov 21, 3:07 PM CST | Special Weather Statement | MEG | 23 min |
| Dec 2, 3:02 AM CST | Dense Fog Advisory | MEG | 6 hr |
| Dec 4, 10:00 PM CST | Dense Fog Advisory | MEG | 11 hr |
| Dec 5, 5:05 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 6, 5:06 AM CST | Mesoscale Discussion | SPC | 114 min |
| Dec 10, 1:35 AM CST | Dense Fog Advisory | MEG | 7 hr |
| Dec 10, 3:07 PM CST | Tornado Watch | SPC | 11 hr |
| Dec 10, 4:45 PM CST | Mesoscale Discussion | SPC | 90 min |
| Dec 10, 9:40 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 10, 10:09 PM CST | Mesoscale Discussion | SPC | 96 min |
| Dec 10, 10:44 PM CST | Tornado Watch | SPC | 6 hr |
| Dec 10, 11:25 PM CST | Severe Thunderstorm Warning | MEG | 9 min |
| Dec 10, 11:48 PM CST | Severe Thunderstorm Warning | MEG | 42 min |
| Dec 11, 12:48 AM CST | Severe Thunderstorm Warning | MEG | 42 min |
| Dec 11, 2:00 AM CST | Mesoscale Discussion | SPC | 90 min |
| Dec 11, 2:12 AM CST | Areal Flood Advisory | MEG | 3 hr |
| Dec 11, 2:44 AM CST | Areal Flood Advisory | MEG | 2 hr |
| Dec 11, 2:51 AM CST | Flash Flood Warning | MEG | 2 hr |
| Dec 16, 2:08 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Dec 17, 9:11 AM CST | Dense Fog Advisory | MEG | 3 hr |
| Dec 24, 8:25 AM CST | Wind Advisory | MEG | 22 hr |
| Dec 25, 9:40 PM CST | Dense Fog Advisory | MEG | 14 hr |
| Dec 29, 10:44 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 29, 12:05 PM CST | Tornado Watch | SPC | 7 hr |
| Dec 29, 1:59 PM CST | Special Weather Statement | MEG | 31 min |
| Dec 29, 9:47 PM CST | Dense Fog Advisory | MEG | 14 hr |
| Dec 30, 7:57 PM CST | Dense Fog Advisory | MEG | 13 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20202022
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.