Alert archive / Mississippi / Lafayette County
Weather alerts in Lafayette County, Mississippi, 2020
135 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lafayette County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 135
- Warnings
- 30
- Watches
- 21
- Advisories
- 35
- Busiest month
- April21 alerts
- Busiest day
- January 11, 202011 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 4 tornado warnings covering Lafayette County in 2020 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 9 minutes after it went out.
Lafayette County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 2 | 50% | 2 | 100% | 9 min |
| Severe thunderstorm warnings | 16 | 11 | 31% | 5 | 100% | 27 min |
| Flash flood warnings | 1 | 0 | 100% | 1 | 0% |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Memphis, TN: tornado warnings | 65 | 20 | 69% | 47 | 72% | 10 min |
| NWS Memphis, TN: severe thunderstorm warnings | 221 | 133 | 40% | 420 | 80% | 25 min |
| NWS Memphis, TN: flash flood warnings | 36 | 17 | 53% | 41 | 73% | 73 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, 3:14 AM CST | Flood Watch | MEG | 57 hr |
| Jan 1, 7:00 PM CST | River Flood Warning | MEG | 53 hr |
| Jan 9, 3:49 PM CST | Flash Flood Watch | MEG | 47 hr |
| Jan 10, 3:26 AM CST | Wind Advisory | MEG | 31 hr |
| Jan 11, 3:52 AM CST | Mesoscale Discussion | SPC | 83 min |
| Jan 11, 4:17 AM CST | Tornado Watch | SPC | 6 hr |
| Jan 11, 4:55 AM CST | Severe Thunderstorm Warning | MEG | 50 min |
| Jan 11, 5:06 AM CST | Mesoscale Discussion | SPC | 54 min |
| Jan 11, 5:13 AM CST | Tornado Warning | MEG | 27 min |
| Jan 11, 5:19 AM CST | Severe Thunderstorm Warning | MEG | 41 min |
| Jan 11, 5:34 AM CST | Severe Thunderstorm Warning | MEG | 5 min |
| Jan 11, 5:52 AM CST | Areal Flood Advisory | MEG | 113 min |
| Jan 11, 5:57 AM CST | Severe Thunderstorm Warning | MEG | 48 min |
| Jan 11, 7:43 AM CST | Areal Flood Advisory | MEG | 2 hr |
| Jan 11, 11:51 AM CST | River Flood Warning | MEG | 23 hr |
| Jan 15, 3:11 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 5, 3:34 PM CST | Special Weather Statement | MEG | 26 min |
| Feb 9, 3:05 AM CST | Flood Watch | MEG | 4 days |
| Feb 10, 10:12 AM CST | River Flood Warning | MEG | 4 days |
| Feb 12, 2:18 PM CST | Special Weather Statement | MEG | 42 min |
| Feb 24, 12:20 PM CST | Mesoscale Discussion | SPC | 115 min |
| Mar 3, 2:52 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 11, 9:54 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 22, 11:04 PM CDT | Severe Thunderstorm Warning | MEG | 41 min |
| Mar 22, 11:24 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 22, 11:46 PM CDT | Special Weather Statement | MEG | 29 min |
| Mar 23, 12:20 AM CDT | Special Weather Statement | MEG | 40 min |
| Mar 23, 1:03 AM CDT | Special Weather Statement | MEG | 42 min |
| Mar 23, 1:10 AM CDT | Severe Thunderstorm Warning | MEG | 35 min |
| Mar 23, 1:35 AM CDT | Severe Thunderstorm Warning | MEG | 21 min |
| Mar 23, 11:01 AM CDT | River Flood Warning | MEG | 11 hr |
| Mar 24, 12:36 PM CDT | River Flood Warning | MEG | 8 hr |
| Mar 24, 2:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Mar 24, 3:06 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 28, 4:59 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Mar 28, 6:34 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 28, 8:16 PM CDT | Severe Thunderstorm Warning | MEG | 44 min |
| Mar 28, 8:25 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Mar 28, 9:57 PM CDT | Severe Thunderstorm Warning | MEG | 32 min |
| Mar 28, 11:09 PM CDT | Special Weather Statement | MEG | 36 min |
| Mar 28, 11:22 PM CDT | Severe Thunderstorm Warning | MEG | 38 min |
| Apr 9, 1:10 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 9, 3:15 AM CDT | Special Weather Statement | MEG | 30 min |
| Apr 11, 11:40 AM CDT | River Flood Warning | MEG | 51 hr |
| Apr 12, 3:56 AM CDT | Flash Flood Watch | MEG | 20 hr |
| Apr 12, 3:57 AM CDT | Wind Advisory | MEG | 26 hr |
| Apr 12, 6:11 AM CDT | Special Weather Statement | MEG | 34 min |
| Apr 12, 7:10 AM CDT | Special Weather Statement | MEG | 20 min |
| Apr 12, 10:41 AM CDT | Tornado Watch | SPC | 10 hr |
| Apr 12, 11:05 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Apr 12, 2:41 PM CDT | Special Weather Statement | MEG | 34 min |
| Apr 12, 7:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 12, 8:19 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 12, 9:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 12, 9:50 PM CDT | Severe Thunderstorm Warning | MEG | 55 min |
| Apr 12, 10:13 PM CDT | Severe Thunderstorm Warning | MEG | 47 min |
| Apr 13, 6:06 PM CDT | Frost Advisory | MEG | 39 hr |
| Apr 15, 3:17 PM CDT | Frost Advisory | MEG | 18 hr |
| Apr 19, 2:34 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Apr 22, 2:42 PM CDT | Flash Flood Watch | MEG | 13 hr |
| Apr 28, 7:35 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 29, 1:44 AM CDT | Special Weather Statement | MEG | 31 min |
| May 7, 3:19 PM CDT | Wind Advisory | MEG | 28 hr |
| May 8, 6:19 AM CDT | Special Weather Statement | MEG | 41 min |
| May 17, 12:54 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 3:12 AM CDT | Special Weather Statement | MEG | 48 min |
| May 22, 4:13 AM CDT | Special Weather Statement | MEG | 47 min |
| May 22, 4:43 AM CDT | Special Weather Statement | MEG | 47 min |
| May 22, 5:19 AM CDT | Special Weather Statement | MEG | 41 min |
| May 28, 12:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 5, 11:03 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 5, 1:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 5, 1:54 PM CDT | Severe Thunderstorm Warning | MEG | 51 min |
| Jun 5, 2:47 PM CDT | Severe Thunderstorm Warning | MEG | 28 min |
| Jun 5, 3:14 PM CDT | Severe Thunderstorm Warning | MEG | 46 min |
| Jun 7, 2:38 AM CDT | Flash Flood Watch | MEG | 50 hr |
| Jun 7, 3:00 PM CDT | Wind Advisory | MEG | 52 hr |
| Jun 8, 1:09 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 8, 5:28 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 8, 5:46 PM CDT | Areal Flood Advisory | MEG | 59 min |
| Jun 8, 6:52 PM CDT | Areal Flood Advisory | MEG | 113 min |
| Jun 9, 5:42 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jun 9, 7:00 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jun 9, 1:13 PM CDT | River Flood Warning | MEG | 21 hr |
| Jun 22, 2:03 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jun 23, 12:01 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 23, 2:38 PM CDT | Special Weather Statement | MEG | 37 min |
| Jun 23, 2:42 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jun 24, 5:56 AM CDT | Areal Flood Advisory | MEG | 2 hr |
| Jun 24, 11:27 AM CDT | Areal Flood Advisory | MEG | 2 hr |
| Jun 25, 3:49 AM CDT | Dense Fog Advisory | MEG | 4 hr |
| Jul 1, 11:26 AM CDT | Flash Flood Watch | MEG | 17 hr |
| Jul 1, 12:18 PM CDT | Areal Flood Warning | MEG | 6 hr |
| Jul 1, 4:46 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 1, 6:27 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jul 2, 5:30 PM CDT | Special Weather Statement | MEG | 45 min |
| Jul 2, 5:43 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jul 14, 2:47 PM CDT | Heat Advisory | MEG | 28 hr |
| Jul 15, 12:16 PM CDT | Special Weather Statement | MEG | 29 min |
| Jul 15, 1:36 PM CDT | Special Weather Statement | MEG | 24 min |
| Jul 15, 2:23 PM CDT | Heat Advisory | MEG | 28 hr |
| Jul 21, 4:15 PM CDT | Special Weather Statement | MEG | 30 min |
| Jul 21, 4:38 PM CDT | Special Weather Statement | MEG | 37 min |
| Jul 21, 5:06 PM CDT | Areal Flood Advisory | MEG | 84 min |
| Jul 23, 2:46 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jul 31, 1:21 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 2, 1:21 AM CDT | Dense Fog Advisory | MEG | 8 hr |
| Aug 9, 3:29 PM CDT | Heat Advisory | MEG | 28 hr |
| Aug 22, 2:12 AM CDT | Dense Fog Advisory | MEG | 7 hr |
| Aug 23, 3:00 AM CDT | Dense Fog Advisory | MEG | 7 hr |
| Aug 26, 10:13 PM CDT | Areal Flood Advisory | MEG | 2 hr |
| Aug 27, 1:04 AM CDT | Flash Flood Watch | MEG | 51 hr |
| Aug 27, 2:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Aug 27, 3:47 PM CDT | Tornado Watch | SPC | 8 hr |
| Aug 27, 7:58 PM CDT | Tornado Warning | MEG | 32 min |
| Aug 28, 6:18 AM CDT | Severe Thunderstorm Warning | MEG | 27 min |
| Aug 28, 6:21 AM CDT | Tornado Warning | MEG | 24 min |
| Aug 28, 6:37 AM CDT | Tornado Warning | MEG | 25 min |
| Aug 28, 6:47 AM CDT | Mesoscale Discussion | SPC | 88 min |
| Aug 28, 4:45 PM CDT | Heat Advisory | MEG | 26 hr |
| Aug 28, 11:16 PM CDT | Areal Flood Advisory | MEG | 104 min |
| Aug 29, 1:23 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Aug 29, 3:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Aug 30, 1:39 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 31, 12:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Aug 31, 6:37 PM CDT | Areal Flood Advisory | MEG | 3 hr |
| Sep 1, 6:13 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 13, 3:48 AM CDT | Flash Flood Watch | MEG | 11 hr |
| Oct 9, 3:07 AM CDT | Flash Flood Watch | MEG | 36 hr |
| Oct 10, 3:17 AM CDT | Wind Advisory | MEG | 13 hr |
| Oct 10, 1:11 PM CDT | Flash Flood Warning | MEG | 2 hr |
| Oct 12, 12:28 AM CDT | Dense Fog Advisory | MEG | 9 hr |
| Oct 31, 2:45 PM CDT | Freeze Watch | MEG | 13 hr |
| Nov 1, 3:05 AM CST | Freeze Warning | MEG | 30 hr |
| Dec 20, 11:15 PM CST | Dense Fog Advisory | MEG | 10 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 | 16 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 27 |
| Special Weather Statement | 22 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 1 |
| River Flood Warning | 7 |
| Flash Flood Watch | 8 |
| Flood Watch | 2 |
| Areal Flood Advisory | 18 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.