Alert archive / Mississippi / Jefferson Davis County
Weather alerts in Jefferson Davis County, Mississippi, 2012
178 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jefferson Davis County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 178
- Warnings
- 40
- Watches
- 34
- Advisories
- 21
- Busiest month
- August50 alerts
- Busiest day
- August 30, 201215 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 Jefferson Davis County in 2012 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.
Jefferson Davis County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 2 | 0% | |
| Severe thunderstorm warnings | 23 | 9 | 61% | 7 | 71% | 25 min |
| Flash flood warnings | 12 | 6 | 50% | 1 | 100% | 190 min |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: tornado warnings | 102 | 24 | 76% | 59 | 75% | 14 min |
| NWS Jackson, MS: severe thunderstorm warnings | 665 | 382 | 43% | 872 | 85% | 25 min |
| NWS Jackson, MS: flash flood warnings | 158 | 71 | 55% | 160 | 84% | 93 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, 4:09 AM CST | Dense Fog Advisory | JAN | 5 hr |
| Jan 8, 4:45 PM CST | Severe Thunderstorm Warning | JAN | 45 min |
| Jan 9, 5:04 AM CST | Dense Fog Advisory | JAN | 5 hr |
| Jan 10, 4:08 PM CST | Mesoscale Discussion | SPC | 82 min |
| Jan 12, 3:47 AM CST | Wind Advisory | JAN | 14 hr |
| Jan 17, 9:26 AM CST | Mesoscale Discussion | SPC | 34 min |
| Jan 17, 3:45 PM CST | Mesoscale Discussion | SPC | 60 min |
| Jan 22, 10:59 PM CST | Tornado Watch | SPC | 7 hr |
| Jan 23, 1:25 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 23, 4:02 AM CST | Mesoscale Discussion | SPC | 118 min |
| Jan 25, 4:49 PM CST | Mesoscale Discussion | SPC | 86 min |
| Jan 25, 8:23 PM CST | Mesoscale Discussion | SPC | 97 min |
| Feb 2, 2:29 AM CST | Dense Fog Advisory | JAN | 6 hr |
| Feb 15, 9:20 PM CST | Severe Thunderstorm Warning | JAN | 55 min |
| Feb 17, 2:17 PM CST | Flash Flood Watch | JAN | 30 hr |
| Feb 18, 3:28 PM CST | Flash Flood Warning | JAN | 3 hr |
| Feb 18, 6:40 PM CST | Areal Flood Warning | JAN | 6 hr |
| Feb 22, 5:23 AM CST | Dense Fog Advisory | JAN | 4 hr |
| Feb 23, 4:55 AM CST | Wind Advisory | JAN | 14 hr |
| Mar 2, 2:42 PM CST | Mesoscale Discussion | SPC | 63 min |
| Mar 2, 4:47 PM CST | Tornado Watch | SPC | 6 hr |
| Mar 2, 5:11 PM CST | Severe Thunderstorm Warning | JAN | 34 min |
| Mar 2, 7:18 PM CST | Mesoscale Discussion | SPC | 57 min |
| Mar 9, 12:47 AM CST | Special Weather Statement | JAN | 58 min |
| Mar 17, 5:29 AM CDT | Dense Fog Advisory | JAN | 4 hr |
| Mar 19, 3:00 PM CDT | Wind Advisory | JAN | 28 hr |
| Mar 20, 4:36 AM CDT | Flash Flood Watch | JAN | 47 hr |
| Mar 21, 9:25 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Mar 21, 10:07 AM CDT | Tornado Watch | SPC | 8 hr |
| Mar 21, 12:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Mar 21, 1:10 PM CDT | Severe Thunderstorm Warning | JAN | 65 min |
| Mar 21, 6:02 PM CDT | Tornado Watch | SPC | 9 hr |
| Mar 22, 4:03 AM CDT | Flash Flood Watch | JAN | 25 hr |
| Mar 22, 12:15 PM CDT | Areal Flood Warning | JAN | 6 hr |
| Mar 28, 6:23 AM CDT | Dense Fog Advisory | JAN | 3 hr |
| Mar 29, 5:19 AM CDT | Dense Fog Advisory | JAN | 4 hr |
| Apr 2, 12:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 2, 12:50 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 2, 2:45 PM CDT | Severe Thunderstorm Warning | JAN | 60 min |
| Apr 2, 3:05 PM CDT | Special Weather Statement | JAN | 60 min |
| Apr 2, 3:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 2, 3:24 PM CDT | Severe Thunderstorm Warning | JAN | 66 min |
| Apr 2, 5:36 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 3, 1:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Apr 3, 2:22 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 3, 5:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Apr 3, 8:22 PM CDT | Severe Thunderstorm Warning | JAN | 53 min |
| Apr 5, 1:53 AM CDT | Tornado Watch | SPC | 9 hr |
| Apr 5, 3:30 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 7:36 AM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 5, 10:43 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 17, 12:00 PM CDT | Flash Flood Warning | JAN | 3 hr |
| Apr 17, 12:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 17, 1:35 PM CDT | Special Weather Statement | JAN | 30 min |
| Apr 29, 3:45 AM CDT | Dense Fog Advisory | JAN | 4 hr |
| May 6, 6:50 PM CDT | Special Weather Statement | JAN | 30 min |
| May 7, 1:07 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 7, 2:40 PM CDT | Special Weather Statement | JAN | 60 min |
| May 7, 3:40 PM CDT | Special Weather Statement | JAN | 60 min |
| May 7, 3:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 12, 10:39 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 12, 1:32 PM CDT | Special Weather Statement | JAN | 28 min |
| May 12, 5:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| May 21, 4:35 PM CDT | Mesoscale Discussion | SPC | 55 min |
| May 21, 5:21 PM CDT | Special Weather Statement | JAN | 39 min |
| May 21, 5:24 PM CDT | Severe Thunderstorm Warning | JAN | 15 min |
| May 21, 5:42 PM CDT | Special Weather Statement | JAN | 28 min |
| May 21, 5:48 PM CDT | Severe Thunderstorm Warning | JAN | 42 min |
| May 31, 1:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 31, 2:53 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 31, 2:58 PM CDT | Special Weather Statement | JAN | 62 min |
| May 31, 3:35 PM CDT | Severe Thunderstorm Warning | JAN | 55 min |
| May 31, 4:09 PM CDT | Severe Thunderstorm Warning | JAN | 66 min |
| Jun 11, 8:37 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 11, 9:42 PM CDT | Severe Thunderstorm Warning | JAN | 63 min |
| Jun 11, 10:51 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jun 29, 3:44 AM CDT | Heat Advisory | JAN | 66 hr |
| Jul 2, 1:18 PM CDT | Special Weather Statement | JAN | 32 min |
| Jul 7, 5:41 PM CDT | Flash Flood Warning | JAN | 76 min |
| Jul 11, 1:23 PM CDT | Special Weather Statement | JAN | 72 min |
| Jul 12, 2:12 PM CDT | Special Weather Statement | JAN | 43 min |
| Jul 13, 6:45 PM CDT | Special Weather Statement | JAN | 40 min |
| Jul 20, 12:47 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 3:07 PM CDT | Flash Flood Warning | JAN | 113 min |
| Jul 28, 7:04 AM CDT | Special Weather Statement | JAN | 56 min |
| Jul 29, 3:53 AM CDT | Heat Advisory | JAN | 4 days |
| Jul 30, 1:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Aug 1, 3:02 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 1, 3:43 PM CDT | Special Weather Statement | JAN | 32 min |
| Aug 1, 4:21 PM CDT | Special Weather Statement | JAN | 29 min |
| Aug 3, 5:44 PM CDT | Special Weather Statement | JAN | 31 min |
| Aug 3, 5:48 PM CDT | Severe Thunderstorm Warning | JAN | 42 min |
| Aug 3, 5:59 PM CDT | Severe Thunderstorm Warning | JAN | 34 min |
| Aug 5, 2:37 PM CDT | Special Weather Statement | JAN | 28 min |
| Aug 6, 12:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 6, 1:10 PM CDT | Special Weather Statement | JAN | 60 min |
| Aug 8, 3:02 PM CDT | Special Weather Statement | JAN | 28 min |
| Aug 10, 5:13 PM CDT | Special Weather Statement | JAN | 32 min |
| Aug 10, 8:12 PM CDT | Severe Thunderstorm Warning | JAN | 63 min |
| Aug 15, 2:08 PM CDT | Severe Thunderstorm Warning | JAN | 52 min |
| Aug 18, 2:01 PM CDT | Special Weather Statement | JAN | 44 min |
| Aug 27, 4:58 AM CDT | Tropical Storm Watch | JAN | 61 hr |
| Aug 27, 4:32 PM CDT | Flash Flood Watch | JAN | 3 days |
| Aug 27, 4:59 PM CDT | Tropical Storm Warning | JAN | 3 days |
| Aug 28, 12:56 PM CDT | Tornado Watch | SPC | 6 hr |
| Aug 28, 3:46 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Aug 28, 6:47 PM CDT | Tornado Watch | SPC | 21 hr |
| Aug 29, 1:55 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 5:46 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Aug 29, 6:36 AM CDT | Tornado Watch | SPC | 9 hr |
| Aug 29, 11:48 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Aug 29, 12:01 PM CDT | Special Weather Statement | JAN | 59 min |
| Aug 29, 3:17 PM CDT | Mesoscale Discussion | SPC | 28 min |
| Aug 29, 3:38 PM CDT | Flash Flood Warning | JAN | 6 hr |
| Aug 29, 3:53 PM CDT | Tornado Watch | SPC | 8 hr |
| Aug 29, 5:17 PM CDT | Special Weather Statement | JAN | 58 min |
| Aug 29, 8:06 PM CDT | Special Weather Statement | JAN | 54 min |
| Aug 29, 8:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 29, 9:35 PM CDT | Flash Flood Warning | JAN | 6 hr |
| Aug 29, 10:15 PM CDT | Flash Flood Warning | JAN | 5 hr |
| Aug 29, 11:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 29, 11:42 PM CDT | Tornado Watch | SPC | 8 hr |
| Aug 30, 3:18 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Aug 30, 3:23 AM CDT | Flash Flood Warning | JAN | 112 min |
| Aug 30, 5:07 AM CDT | Flash Flood Warning | JAN | 4 hr |
| Aug 30, 6:33 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Aug 30, 7:13 AM CDT | Tornado Watch | SPC | 9 hr |
| Aug 30, 9:14 AM CDT | Flash Flood Warning | JAN | 4 hr |
| Aug 30, 12:37 PM CDT | Areal Flood Warning | JAN | 12 hr |
| Aug 30, 12:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 30, 3:56 PM CDT | Tornado Watch | SPC | 6 hr |
| Aug 30, 7:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Aug 30, 8:35 PM CDT | Flash Flood Watch | JAN | 4 hr |
| Aug 30, 8:48 PM CDT | Tornado Warning | JAN | 42 min |
| Aug 30, 9:03 PM CDT | Flash Flood Warning | JAN | 117 min |
| Aug 30, 9:05 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Aug 30, 9:44 PM CDT | Tornado Watch | SPC | 5 hr |
| Sep 4, 7:13 PM CDT | Severe Thunderstorm Warning | JAN | 29 min |
| Sep 29, 4:02 AM CDT | Flash Flood Watch | JAN | 45 hr |
| Sep 30, 10:33 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Sep 30, 2:36 PM CDT | Tornado Watch | SPC | 3 hr |
| Sep 30, 5:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Sep 30, 5:50 PM CDT | Tornado Watch | SPC | 8 hr |
| Oct 14, 7:50 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 18, 2:40 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Oct 24, 4:11 AM CDT | Dense Fog Advisory | JAN | 6 hr |
| Oct 25, 3:24 AM CDT | Dense Fog Advisory | JAN | 7 hr |
| Nov 3, 5:18 AM CDT | Dense Fog Advisory | JAN | 5 hr |
| Nov 12, 2:08 AM CST | Special Weather Statement | JAN | 57 min |
| Dec 1, 4:32 AM CST | Dense Fog Advisory | JAN | 4 hr |
| Dec 2, 1:25 AM CST | Dense Fog Advisory | JAN | 9 hr |
| Dec 2, 1:52 PM CST | Dense Fog Advisory | JAN | 20 hr |
| Dec 8, 4:03 AM CST | Dense Fog Advisory | JAN | 6 hr |
| Dec 10, 4:07 AM CST | Mesoscale Discussion | SPC | 113 min |
| Dec 10, 5:44 AM CST | Tornado Watch | SPC | 5 hr |
| Dec 10, 7:09 AM CST | Severe Thunderstorm Warning | JAN | 51 min |
| Dec 10, 7:31 AM CST | Mesoscale Discussion | SPC | 119 min |
| Dec 10, 7:41 AM CST | Severe Thunderstorm Warning | JAN | 44 min |
| Dec 16, 9:54 AM CST | Mesoscale Discussion | SPC | 96 min |
| Dec 16, 12:07 PM CST | Special Weather Statement | JAN | 73 min |
| Dec 16, 12:23 PM CST | Mesoscale Discussion | SPC | 67 min |
| Dec 16, 1:11 PM CST | Special Weather Statement | JAN | 59 min |
| Dec 16, 2:19 PM CST | Special Weather Statement | JAN | 61 min |
| Dec 19, 9:53 AM CST | Wind Advisory | JAN | 32 hr |
| Dec 20, 4:08 AM CST | Mesoscale Discussion | SPC | 67 min |
| Dec 20, 4:23 AM CST | Tornado Watch | SPC | 9 hr |
| Dec 20, 5:44 AM CST | Severe Thunderstorm Warning | JAN | 76 min |
| Dec 20, 9:56 AM CST | Mesoscale Discussion | SPC | 64 min |
| Dec 25, 7:54 AM CST | Special Weather Statement | JAN | 31 min |
| Dec 25, 10:17 AM CST | Flash Flood Watch | JAN | 9 hr |
| Dec 25, 12:19 PM CST | Mesoscale Discussion | SPC | 71 min |
| Dec 25, 12:58 PM CST | Tornado Watch | SPC | 9 hr |
| Dec 25, 3:44 PM CST | Mesoscale Discussion | SPC | 91 min |
| Dec 25, 3:52 PM CST | Severe Thunderstorm Warning | JAN | 38 min |
| Dec 25, 4:02 PM CST | Severe Thunderstorm Warning | JAN | 13 min |
| Dec 25, 4:19 PM CST | Severe Thunderstorm Warning | JAN | 26 min |
| Dec 28, 9:02 AM CST | Flash Flood Watch | JAN | 11 hr |
| Dec 28, 1:46 PM CST | Flash Flood Warning | JAN | 119 min |
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 | 23 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 18 |
| Mesoscale Discussion | 52 |
| Special Weather Statement | 31 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 12 |
| Flash Flood Watch | 8 |
| Heat | |
| Heat Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 15 |
| Tropical | |
| Tropical Storm Warning | 1 |
| Tropical Storm Watch | 1 |
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.