Alert archive / Mississippi / Alcorn County
Weather alerts in Alcorn County, Mississippi, 2022
129 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Alcorn County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 129
- Warnings
- 25
- Watches
- 18
- Advisories
- 49
- Busiest month
- March16 alerts
- Busiest day
- March 30, 20226 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 Alcorn County in 2022 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.
Alcorn County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 1 | 0% | |
| Severe thunderstorm warnings | 13 | 8 | 38% | 7 | 71% | 25 min |
| Flash flood warnings | 0 | 1 | 0% |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Memphis, TN: tornado warnings | 51 | 9 | 82% | 17 | 41% | 12 min |
| NWS Memphis, TN: severe thunderstorm warnings | 245 | 129 | 47% | 368 | 70% | 21 min |
| NWS Memphis, TN: flash flood warnings | 19 | 6 | 68% | 15 | 60% | 58 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 1, 3:52 AM CST | Wind Advisory | MEG | 11 hr |
| Jan 1, 1:30 PM CST | Tornado Watch | SPC | 9 hr |
| Jan 1, 1:57 PM CST | Mesoscale Discussion | SPC | 93 min |
| Jan 1, 3:27 PM CST | Mesoscale Discussion | SPC | 93 min |
| Jan 1, 3:41 PM CST | Special Weather Statement | MEG | 34 min |
| Jan 2, 3:26 AM CST | Winter Weather Advisory | MEG | 20 hr |
| Jan 5, 12:05 PM CST | Winter Weather Advisory | MEG | 27 hr |
| Jan 14, 3:27 AM CST | Winter Storm Watch | MEG | 32 hr |
| Jan 15, 11:50 AM CST | Winter Storm Warning | MEG | 26 hr |
| Jan 15, 11:50 AM CST | Winter Weather Advisory | MEG | 27 hr |
| Feb 2, 1:58 PM CST | Winter Weather Advisory | MEG | 40 hr |
| Feb 14, 3:31 PM CST | Red Flag Warning | MEG | 26 hr |
| Feb 16, 3:27 AM CST | Wind Advisory | MEG | 41 hr |
| Feb 17, 1:46 PM CST | Tornado Watch | SPC | 6 hr |
| Feb 20, 2:32 PM CST | Flood Watch | MEG | 63 hr |
| Feb 22, 3:03 PM CST | Mesoscale Discussion | SPC | 117 min |
| Feb 22, 3:13 PM CST | Special Weather Statement | MEG | 32 min |
| Feb 22, 3:48 PM CST | Special Weather Statement | MEG | 42 min |
| Feb 22, 6:54 PM CST | Tornado Warning | MEG | 36 min |
| Feb 24, 3:19 PM CST | Dense Fog Advisory | MEG | 6 hr |
| Mar 10, 2:52 PM CST | Winter Weather Advisory | MEG | 36 hr |
| Mar 11, 8:24 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Mar 17, 2:34 AM CDT | Dense Fog Advisory | MEG | 7 hr |
| Mar 21, 3:08 AM CDT | Flood Watch | MEG | 40 hr |
| Mar 21, 2:46 PM CDT | Wind Advisory | MEG | 25 hr |
| Mar 22, 11:57 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 22, 12:42 PM CDT | Tornado Watch | SPC | 6 hr |
| Mar 26, 3:29 AM CDT | Frost Advisory | MEG | 30 hr |
| Mar 29, 3:04 AM CDT | Wind Advisory | MEG | 25 hr |
| Mar 30, 3:44 AM CDT | High Wind Warning | MEG | 16 hr |
| Mar 30, 12:16 PM CDT | Tornado Watch | SPC | 9 hr |
| Mar 30, 5:12 PM CDT | Severe Thunderstorm Warning | MEG | 48 min |
| Mar 30, 5:59 PM CDT | Severe Thunderstorm Warning | MEG | 46 min |
| Mar 30, 5:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Mar 30, 6:39 PM CDT | Severe Thunderstorm Warning | MEG | 66 min |
| Mar 31, 2:50 AM CDT | Frost Advisory | MEG | 30 hr |
| Apr 8, 5:55 AM CDT | Frost Advisory | MEG | 25 hr |
| Apr 10, 3:06 AM CDT | Red Flag Warning | MEG | 17 hr |
| Apr 12, 2:25 AM CDT | Severe Thunderstorm Warning | MEG | 50 min |
| Apr 12, 2:50 PM CDT | Wind Advisory | MEG | 31 hr |
| Apr 13, 1:42 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 13, 5:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 13, 6:08 PM CDT | Severe Thunderstorm Warning | MEG | 52 min |
| Apr 13, 6:34 PM CDT | Severe Thunderstorm Warning | MEG | 41 min |
| Apr 13, 6:58 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Apr 13, 7:38 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Apr 15, 2:03 PM CDT | Flood Watch | MEG | 26 hr |
| Apr 15, 9:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 15, 10:02 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 2, 2:33 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 2, 3:12 PM CDT | Severe Thunderstorm Warning | MEG | 48 min |
| May 2, 3:47 PM CDT | Severe Thunderstorm Warning | MEG | 43 min |
| May 5, 12:44 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 5, 4:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| May 5, 5:11 PM CDT | Severe Thunderstorm Warning | MEG | 46 min |
| May 8, 5:23 AM CDT | Dense Fog Advisory | MEG | 4 hr |
| May 15, 3:40 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 15, 6:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 21, 10:12 PM CDT | Special Weather Statement | MEG | 33 min |
| May 21, 10:39 PM CDT | Special Weather Statement | MEG | 36 min |
| May 21, 11:14 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| May 24, 6:30 PM CDT | Special Weather Statement | MEG | 30 min |
| May 25, 2:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 6, 5:34 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 7, 1:16 AM CDT | Severe Thunderstorm Warning | MEG | 44 min |
| Jun 8, 11:50 AM CDT | Severe Thunderstorm Warning | MEG | 22 min |
| Jun 10, 11:32 PM CDT | Dense Fog Advisory | MEG | 9 hr |
| Jun 11, 2:26 PM CDT | Heat Advisory | MEG | 30 hr |
| Jun 12, 4:14 AM CDT | Heat Advisory | MEG | 23 hr |
| Jun 13, 2:49 AM CDT | Excessive Heat Warning | MEG | 17 hr |
| Jun 13, 2:49 AM CDT | Heat Advisory | MEG | 36 hr |
| Jun 14, 2:47 AM CDT | Heat Advisory | MEG | 5 days |
| Jun 17, 12:03 PM CDT | Special Weather Statement | MEG | 27 min |
| Jun 17, 12:28 PM CDT | Special Weather Statement | MEG | 32 min |
| Jun 17, 12:59 PM CDT | Special Weather Statement | MEG | 31 min |
| Jun 21, 2:36 PM CDT | Heat Advisory | MEG | 29 hr |
| Jun 26, 3:49 AM CDT | Heat Advisory | MEG | 14 hr |
| Jun 26, 10:08 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 3:27 AM CDT | Heat Advisory | MEG | 47 hr |
| Jul 5, 12:37 PM CDT | Excessive Heat Warning | MEG | 4 days |
| Jul 5, 7:25 PM CDT | Heat Advisory | MEG | 8 hr |
| Jul 6, 2:55 AM CDT | Heat Advisory | MEG | 24 hr |
| Jul 9, 6:36 AM CDT | Severe Thunderstorm Warning | MEG | 39 min |
| Jul 13, 12:30 AM CDT | Special Weather Statement | MEG | 30 min |
| Jul 13, 3:45 AM CDT | Special Weather Statement | MEG | 30 min |
| Jul 13, 5:23 AM CDT | Special Weather Statement | MEG | 52 min |
| Jul 19, 3:09 AM CDT | Heat Advisory | MEG | 42 hr |
| Jul 20, 3:29 PM CDT | Heat Advisory | MEG | 29 hr |
| Jul 22, 2:38 AM CDT | Heat Advisory | MEG | 6 days |
| Jul 24, 3:04 PM CDT | Heat Advisory | MEG | 3 days |
| Jul 28, 6:48 PM CDT | Special Weather Statement | MEG | 27 min |
| Aug 9, 5:28 PM CDT | Special Weather Statement | MEG | 32 min |
| Aug 9, 6:35 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Aug 10, 2:58 PM CDT | Areal Flood Advisory | MEG | 90 min |
| Aug 11, 4:30 AM CDT | Dense Fog Advisory | MEG | 5 hr |
| Aug 22, 5:10 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Sep 6, 3:46 PM CDT | Special Weather Statement | MEG | 29 min |
| Sep 7, 1:19 AM CDT | Dense Fog Advisory | MEG | 8 hr |
| Sep 12, 6:53 AM CDT | Dense Fog Advisory | MEG | 2 hr |
| Sep 25, 7:23 AM CDT | Special Weather Statement | MEG | 37 min |
| Sep 26, 3:07 PM CDT | Fire Weather Watch | MEG | 24 hr |
| Sep 27, 3:27 PM CDT | Red Flag Warning | MEG | 28 hr |
| Oct 12, 3:19 PM CDT | Special Weather Statement | MEG | 26 min |
| Oct 12, 3:43 PM CDT | Special Weather Statement | MEG | 32 min |
| Oct 12, 3:56 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Oct 16, 2:55 PM CDT | Freeze Warning | MEG | 42 hr |
| Oct 16, 8:38 PM CDT | Freeze Watch | MEG | 7 hr |
| Oct 17, 3:20 AM CDT | Freeze Watch | MEG | 23 hr |
| Oct 18, 2:46 AM CDT | Freeze Warning | MEG | 30 hr |
| Oct 19, 3:04 AM CDT | Freeze Warning | MEG | 30 hr |
| Oct 24, 2:11 PM CDT | Wind Advisory | MEG | 29 hr |
| Oct 25, 11:21 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 25, 12:15 PM CDT | Special Weather Statement | MEG | 45 min |
| Oct 25, 1:01 PM CDT | Special Weather Statement | MEG | 44 min |
| Nov 7, 12:28 AM CST | Dense Fog Advisory | MEG | 9 hr |
| Nov 28, 6:17 AM CST | Dense Fog Advisory | MEG | 2 hr |
| Nov 29, 10:56 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Nov 29, 11:30 AM CST | Severe Thunderstorm Warning | MEG | 28 min |
| Nov 29, 6:19 PM CST | Mesoscale Discussion | SPC | 86 min |
| Dec 7, 9:39 PM CST | Dense Fog Advisory | MEG | 13 hr |
| Dec 9, 1:23 AM CST | Dense Fog Advisory | MEG | 9 hr |
| Dec 9, 7:47 PM CST | Dense Fog Advisory | MEG | 14 hr |
| Dec 13, 10:11 AM CST | Flood Watch | MEG | 33 hr |
| Dec 20, 10:09 AM CST | Wind Chill Watch | MEG | 18 hr |
| Dec 21, 3:42 AM CST | Wind Chill Warning | MEG | 56 hr |
| Dec 21, 2:25 PM CST | Winter Weather Advisory | MEG | 37 hr |
| Dec 23, 3:26 AM CST | Wind Chill Advisory | MEG | 31 hr |
| Dec 25, 6:06 PM CST | Winter Weather Advisory | MEG | 22 hr |
| Dec 27, 7:36 PM CST | Freezing Fog Advisory | MEG | 8 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 archive20212023
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.