Alert archive / Mississippi / Lafayette County
Weather alerts in Lafayette County, Mississippi, 2012
154 weather alerts in 2012, 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 2012. Tap one for its archive.
- Alerts
- 154
- Warnings
- 41
- Watches
- 20
- Advisories
- 36
- Busiest month
- July22 alerts
- Busiest day
- September 3, 20129 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 Lafayette County in 2012 had a tornado report inside them.
Lafayette County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 29 | 11 | 62% | 7 | 86% | 29 min |
| Flash flood warnings | 4 | 1 | 75% | 3 | 100% | 118 min |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Memphis, TN: tornado warnings | 76 | 11 | 86% | 22 | 68% | 14 min |
| NWS Memphis, TN: severe thunderstorm warnings | 482 | 201 | 58% | 468 | 72% | 22 min |
| NWS Memphis, TN: flash flood warnings | 64 | 16 | 75% | 39 | 82% | 48 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 9, 3:28 AM CST | Dense Fog Advisory | MEG | 9 hr |
| Jan 11, 2:47 AM CST | Dense Fog Advisory | MEG | 7 hr |
| Jan 12, 3:42 AM CST | Wind Advisory | MEG | 13 hr |
| Jan 14, 3:07 AM CST | Wind Advisory | MEG | 9 hr |
| Jan 14, 2:03 PM CST | Red Flag Warning | MEG | 2 hr |
| Jan 17, 1:03 PM CST | Special Weather Statement | MEG | 27 min |
| Jan 20, 10:02 PM CST | Mesoscale Discussion | SPC | 88 min |
| Jan 20, 10:35 PM CST | Tornado Watch | SPC | 8 hr |
| Jan 21, 1:52 AM CST | Mesoscale Discussion | SPC | 113 min |
| Jan 22, 8:16 AM CST | Dense Fog Advisory | MEG | 4 hr |
| Jan 22, 1:12 PM CST | Wind Advisory | MEG | 14 hr |
| Jan 22, 5:16 PM CST | Tornado Watch | SPC | 6 hr |
| Jan 22, 9:47 PM CST | Mesoscale Discussion | SPC | 58 min |
| Jan 22, 10:25 PM CST | Severe Thunderstorm Warning | MEG | 50 min |
| Jan 22, 10:59 PM CST | Tornado Watch | SPC | 7 hr |
| Jan 22, 11:14 PM CST | Severe Thunderstorm Warning | MEG | 46 min |
| Jan 22, 11:28 PM CST | Severe Thunderstorm Warning | MEG | 47 min |
| Jan 22, 11:58 PM CST | Severe Thunderstorm Warning | MEG | 47 min |
| Jan 23, 12:14 AM CST | Severe Thunderstorm Warning | MEG | 46 min |
| Feb 1, 2:58 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 1, 4:49 PM CST | Mesoscale Discussion | SPC | 56 min |
| Feb 1, 4:59 PM CST | Severe Thunderstorm Watch | SPC | 4 hr |
| Feb 1, 5:44 PM CST | Severe Thunderstorm Warning | MEG | 46 min |
| Feb 1, 6:13 PM CST | Severe Thunderstorm Warning | MEG | 47 min |
| Feb 2, 3:34 AM CST | Dense Fog Advisory | MEG | 5 hr |
| Feb 18, 3:32 PM CST | Wind Advisory | MEG | 12 hr |
| Feb 23, 4:11 AM CST | Wind Advisory | MEG | 14 hr |
| Feb 29, 12:49 AM CST | Mesoscale Discussion | SPC | 56 min |
| Feb 29, 11:46 AM CST | Mesoscale Discussion | SPC | 89 min |
| Feb 29, 1:48 PM CST | Tornado Watch | SPC | 7 hr |
| Mar 2, 2:50 AM CST | Wind Advisory | MEG | 15 hr |
| Mar 2, 12:57 PM CST | Mesoscale Discussion | SPC | 63 min |
| Mar 2, 1:20 PM CST | Tornado Watch | SPC | 9 hr |
| Mar 2, 3:25 PM CST | Mesoscale Discussion | SPC | 65 min |
| Mar 2, 3:44 PM CST | Severe Thunderstorm Warning | MEG | 46 min |
| Mar 2, 4:01 PM CST | Severe Thunderstorm Warning | MEG | 44 min |
| Mar 2, 4:11 PM CST | Severe Thunderstorm Warning | MEG | 34 min |
| Mar 2, 4:40 PM CST | Severe Thunderstorm Warning | MEG | 50 min |
| Mar 3, 8:49 PM CST | Fire Weather Watch | MEG | 60 min |
| Mar 3, 9:53 PM CST | Fire Weather Watch | MEG | 5 hr |
| Mar 4, 3:07 AM CST | Red Flag Warning | MEG | 15 hr |
| Mar 8, 4:54 PM CST | Severe Thunderstorm Warning | MEG | 51 min |
| Mar 8, 5:10 PM CST | Wind Advisory | MEG | 5 hr |
| Mar 8, 5:23 PM CST | Severe Thunderstorm Warning | MEG | 52 min |
| Mar 9, 5:04 AM CST | River Flood Warning | MEG | 7 hr |
| Mar 12, 4:02 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Mar 20, 3:19 AM CDT | Wind Advisory | MEG | 12 hr |
| Mar 31, 12:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 2, 5:36 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 5, 12:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Apr 5, 12:18 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 5, 1:53 PM CDT | Special Weather Statement | MEG | 37 min |
| Apr 5, 2:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Apr 22, 1:16 PM CDT | Wind Advisory | MEG | 6 hr |
| May 2, 3:47 PM CDT | Severe Thunderstorm Warning | MEG | 33 min |
| May 7, 10:33 AM CDT | Special Weather Statement | MEG | 27 min |
| May 8, 4:09 AM CDT | Dense Fog Advisory | MEG | 5 hr |
| May 14, 12:30 AM CDT | Dense Fog Advisory | MEG | 7 hr |
| May 30, 12:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 30, 2:34 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 30, 3:08 PM CDT | Special Weather Statement | MEG | 37 min |
| May 30, 4:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| May 31, 11:59 AM CDT | Mesoscale Discussion | SPC | 61 min |
| May 31, 12:59 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 31, 2:38 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 31, 2:45 PM CDT | Severe Thunderstorm Warning | MEG | 45 min |
| May 31, 3:21 PM CDT | Special Weather Statement | MEG | 39 min |
| Jun 3, 5:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 4, 5:08 AM CDT | Severe Thunderstorm Warning | MEG | 37 min |
| Jun 4, 5:36 AM CDT | Severe Thunderstorm Warning | MEG | 39 min |
| Jun 4, 6:09 AM CDT | Special Weather Statement | MEG | 36 min |
| Jun 11, 1:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 11, 1:28 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 11, 3:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 3:57 PM CDT | Severe Thunderstorm Warning | MEG | 48 min |
| Jun 11, 4:35 PM CDT | Severe Thunderstorm Warning | MEG | 40 min |
| Jun 11, 5:05 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Jun 28, 3:28 AM CDT | Heat Advisory | MEG | 4 days |
| Jul 1, 5:13 PM CDT | Special Weather Statement | MEG | 32 min |
| Jul 1, 6:10 PM CDT | Special Weather Statement | MEG | 20 min |
| Jul 4, 3:35 AM CDT | Heat Advisory | MEG | 4 days |
| Jul 6, 2:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 6, 2:58 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 6, 3:18 PM CDT | Special Weather Statement | MEG | 42 min |
| Jul 6, 4:11 PM CDT | Severe Thunderstorm Warning | MEG | 32 min |
| Jul 6, 6:15 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 9:42 PM CDT | Severe Thunderstorm Warning | MEG | 48 min |
| Jul 14, 3:54 PM CDT | Flash Flood Warning | MEG | 96 min |
| Jul 18, 3:27 AM CDT | Heat Advisory | MEG | 3 days |
| Jul 18, 6:36 PM CDT | Special Weather Statement | MEG | 39 min |
| Jul 19, 9:47 PM CDT | Excessive Heat Watch | MEG | 6 hr |
| Jul 20, 4:04 AM CDT | Excessive Heat Warning | MEG | 15 hr |
| Jul 20, 8:22 PM CDT | Special Weather Statement | MEG | 53 min |
| Jul 20, 8:36 PM CDT | Severe Thunderstorm Warning | MEG | 39 min |
| Jul 21, 2:47 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 3:04 PM CDT | Heat Advisory | MEG | 5 days |
| Jul 28, 11:18 AM CDT | Heat Advisory | MEG | 8 hr |
| Jul 29, 3:34 PM CDT | Heat Advisory | MEG | 28 hr |
| Jul 30, 5:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 31, 2:28 AM CDT | Heat Advisory | MEG | 61 hr |
| Aug 1, 2:36 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Aug 1, 4:36 PM CDT | Severe Thunderstorm Warning | MEG | 39 min |
| Aug 4, 3:36 AM CDT | Heat Advisory | MEG | 15 hr |
| Aug 13, 3:15 PM CDT | Mesoscale Discussion | SPC | 30 min |
| Aug 13, 3:32 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 13, 5:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Aug 16, 2:44 PM CDT | Special Weather Statement | MEG | 31 min |
| Aug 17, 2:22 AM CDT | Flash Flood Warning | MEG | 3 hr |
| Aug 30, 5:02 PM CDT | Tornado Warning | MEG | 28 min |
| Aug 30, 5:25 PM CDT | Tornado Warning | MEG | 35 min |
| Aug 30, 7:05 PM CDT | Wind Advisory | MEG | 4 hr |
| Sep 1, 7:08 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 1, 9:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Sep 2, 3:42 PM CDT | Tornado Watch | SPC | 7 hr |
| Sep 2, 7:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Sep 2, 9:23 PM CDT | Flash Flood Warning | MEG | 3 hr |
| Sep 2, 9:47 PM CDT | Special Weather Statement | MEG | 43 min |
| Sep 2, 9:48 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Sep 2, 10:08 PM CDT | Areal Flood Advisory | MEG | 97 min |
| Sep 2, 10:27 PM CDT | Special Weather Statement | MEG | 48 min |
| Sep 2, 10:43 PM CDT | Flash Flood Warning | MEG | 4 hr |
| Sep 2, 11:09 PM CDT | Special Weather Statement | MEG | 51 min |
| Sep 2, 11:53 PM CDT | Special Weather Statement | MEG | 52 min |
| Sep 5, 4:53 AM CDT | Heat Advisory | MEG | 14 hr |
| Sep 6, 4:15 AM CDT | Heat Advisory | MEG | 15 hr |
| Sep 6, 10:13 PM CDT | Special Weather Statement | MEG | 32 min |
| Sep 7, 3:22 AM CDT | Heat Advisory | MEG | 16 hr |
| Sep 7, 8:10 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 7, 11:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Oct 8, 2:36 PM CDT | Frost Advisory | MEG | 17 hr |
| Oct 12, 10:31 PM CDT | Dense Fog Advisory | MEG | 10 hr |
| Oct 17, 3:49 AM CDT | Wind Advisory | MEG | 20 hr |
| Oct 17, 8:23 PM CDT | Tornado Watch | SPC | 5 hr |
| Oct 17, 9:26 PM CDT | Tornado Warning | MEG | 49 min |
| Oct 17, 9:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Oct 17, 9:36 PM CDT | Severe Thunderstorm Warning | MEG | 39 min |
| Oct 17, 10:05 PM CDT | Severe Thunderstorm Warning | MEG | 40 min |
| Oct 17, 10:11 PM CDT | Severe Thunderstorm Warning | MEG | 49 min |
| Oct 17, 10:42 PM CDT | Severe Thunderstorm Warning | MEG | 48 min |
| Oct 30, 3:34 PM CDT | Frost Advisory | MEG | 18 hr |
| Oct 31, 2:53 PM CDT | Frost Advisory | MEG | 18 hr |
| Nov 3, 8:57 PM CDT | Special Weather Statement | MEG | 33 min |
| Nov 7, 3:00 PM CST | Frost Advisory | MEG | 17 hr |
| Nov 7, 3:00 PM CST | Freeze Warning | MEG | 17 hr |
| Dec 8, 8:58 PM CST | Special Weather Statement | MEG | 32 min |
| Dec 8, 9:02 PM CST | Severe Thunderstorm Warning | MEG | 28 min |
| Dec 10, 12:12 AM CST | Special Weather Statement | MEG | 33 min |
| Dec 19, 3:32 AM CST | Wind Advisory | MEG | 41 hr |
| Dec 20, 12:50 AM CST | Mesoscale Discussion | SPC | 55 min |
| Dec 20, 1:07 AM CST | Severe Thunderstorm Watch | SPC | 5 hr |
| Dec 20, 3:49 AM CST | Severe Thunderstorm Warning | MEG | 41 min |
| Dec 20, 4:08 AM CST | Mesoscale Discussion | SPC | 67 min |
| Dec 20, 4:32 AM CST | Special Weather Statement | MEG | 43 min |
| Dec 25, 4:32 AM CST | Wind Advisory | MEG | 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 | 29 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 10 |
| Tornado Watch | 7 |
| Mesoscale Discussion | 36 |
| Special Weather Statement | 21 |
| Flooding | |
| Flash Flood Warning | 4 |
| River Flood Warning | 1 |
| Areal Flood Advisory | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 11 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 13 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.