Alert archive / Mississippi / Jefferson Davis County
Weather alerts in Jefferson Davis County, Mississippi, 2019
127 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 127
- Warnings
- 42
- Watches
- 17
- Advisories
- 17
- Busiest month
- April18 alerts
- Busiest day
- July 14, 20198 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
5 of 11 tornado warnings covering Jefferson Davis County in 2019 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 41 minutes after it went out.
Jefferson Davis County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 11 | 5 | 55% | 2 | 100% | 41 min |
| Severe thunderstorm warnings | 22 | 11 | 50% | 12 | 42% | 35 min |
| Flash flood warnings | 4 | 4 | 0% | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: tornado warnings | 122 | 50 | 59% | 184 | 84% | 23 min |
| NWS Jackson, MS: severe thunderstorm warnings | 404 | 246 | 39% | 711 | 74% | 26 min |
| NWS Jackson, MS: flash flood warnings | 117 | 78 | 33% | 278 | 81% | 88 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, 4:06 PM CST | Flash Flood Watch | JAN | 55 hr |
| Jan 5, 2:02 PM CST | Dense Fog Advisory | JAN | 17 hr |
| Jan 17, 9:10 PM CST | Dense Fog Advisory | JAN | 12 hr |
| Jan 19, 5:04 AM CST | Mesoscale Discussion | SPC | 116 min |
| Jan 19, 5:23 AM CST | Tornado Watch | SPC | 8 hr |
| Jan 19, 8:47 AM CST | Severe Thunderstorm Warning | JAN | 58 min |
| Jan 19, 9:48 AM CST | Tornado Warning | JAN | 42 min |
| Jan 28, 3:51 AM CST | Winter Weather Advisory | JAN | 27 hr |
| Feb 3, 4:03 AM CST | Dense Fog Advisory | JAN | 6 hr |
| Feb 4, 3:42 PM CST | Dense Fog Advisory | JAN | 16 hr |
| Feb 12, 5:21 AM CST | Special Weather Statement | JAN | 39 min |
| Feb 20, 6:29 AM CST | Mesoscale Discussion | SPC | 3 hr |
| Feb 20, 9:12 AM CST | Flash Flood Warning | JAN | 4 hr |
| Feb 20, 10:44 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 20, 12:00 PM CST | Flash Flood Warning | JAN | 3 hr |
| Feb 20, 10:15 PM CST | Special Weather Statement | JAN | 45 min |
| Feb 20, 10:57 PM CST | Severe Thunderstorm Warning | JAN | 48 min |
| Feb 22, 3:44 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 22, 6:11 PM CST | Severe Thunderstorm Warning | JAN | 18 min |
| Feb 23, 7:51 PM CST | Mesoscale Discussion | SPC | 114 min |
| Mar 3, 9:13 AM CST | Mesoscale Discussion | SPC | 62 min |
| Mar 3, 9:51 AM CST | Severe Thunderstorm Warning | JAN | 54 min |
| Mar 3, 11:03 AM CST | Tornado Watch | SPC | 7 hr |
| Mar 3, 11:04 AM CST | Severe Thunderstorm Warning | JAN | 56 min |
| Mar 4, 3:50 AM CST | Freeze Warning | JAN | 30 hr |
| Mar 5, 3:10 AM CST | Freeze Warning | JAN | 31 hr |
| Mar 14, 2:03 PM CDT | Severe Thunderstorm Warning | JAN | 42 min |
| Mar 14, 2:10 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Mar 14, 2:38 PM CDT | Tornado Warning | JAN | 44 min |
| Apr 7, 7:46 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 7, 9:39 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 7, 9:52 PM CDT | Special Weather Statement | JAN | 38 min |
| Apr 8, 4:05 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 12, 3:20 AM CDT | Mesoscale Discussion | SPC | 55 min |
| Apr 13, 3:19 AM CDT | Wind Advisory | JAN | 19 hr |
| Apr 13, 7:11 PM CDT | Tornado Watch | SPC | 11 hr |
| Apr 13, 8:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Apr 13, 8:32 PM CDT | Tornado Warning | JAN | 58 min |
| Apr 17, 2:59 PM CDT | Flash Flood Watch | JAN | 28 hr |
| Apr 18, 12:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 18, 1:41 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 18, 2:30 PM CDT | Severe Thunderstorm Warning | JAN | 75 min |
| Apr 18, 2:46 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 18, 3:02 PM CDT | Tornado Warning | JAN | 43 min |
| Apr 18, 3:41 PM CDT | Severe Thunderstorm Warning | JAN | 64 min |
| Apr 25, 8:06 AM CDT | Tornado Watch | SPC | 8 hr |
| Apr 25, 11:48 AM CDT | Mesoscale Discussion | SPC | 117 min |
| May 8, 3:49 AM CDT | Flash Flood Watch | JAN | 4 days |
| May 8, 6:45 PM CDT | Tornado Watch | SPC | 5 hr |
| May 8, 9:28 PM CDT | Mesoscale Discussion | SPC | 62 min |
| May 9, 12:09 AM CDT | Special Weather Statement | JAN | 51 min |
| May 9, 8:09 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 9, 11:22 AM CDT | Mesoscale Discussion | SPC | 113 min |
| May 9, 11:32 AM CDT | Severe Thunderstorm Warning | JAN | 58 min |
| May 9, 12:32 PM CDT | Severe Thunderstorm Warning | JAN | 58 min |
| May 11, 11:31 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 11, 1:38 PM CDT | Special Weather Statement | JAN | 52 min |
| May 11, 2:49 PM CDT | Special Weather Statement | JAN | 26 min |
| May 11, 3:21 PM CDT | Flash Flood Warning | JAN | 6 hr |
| May 12, 4:59 AM CDT | Special Weather Statement | JAN | 61 min |
| Jun 6, 3:35 AM CDT | Flash Flood Watch | JAN | 12 hr |
| Jun 17, 1:57 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 21, 3:33 AM CDT | Heat Advisory | JAN | 15 hr |
| Jun 23, 1:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jun 23, 3:59 PM CDT | Severe Thunderstorm Warning | JAN | 46 min |
| Jun 23, 4:12 PM CDT | Severe Thunderstorm Warning | JAN | 25 min |
| Jun 24, 4:18 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Jun 24, 4:59 AM CDT | Special Weather Statement | JAN | 46 min |
| Jun 24, 5:13 AM CDT | Severe Thunderstorm Warning | JAN | 62 min |
| Jun 25, 5:36 PM CDT | Special Weather Statement | JAN | 54 min |
| Jun 27, 4:07 PM CDT | Special Weather Statement | JAN | 23 min |
| Jun 27, 4:57 PM CDT | Severe Thunderstorm Warning | JAN | 48 min |
| Jun 27, 5:45 PM CDT | Special Weather Statement | JAN | 30 min |
| Jul 11, 2:22 PM CDT | Flash Flood Watch | JAN | 4 days |
| Jul 13, 12:54 PM CDT | Special Weather Statement | JAN | 36 min |
| Jul 13, 9:21 PM CDT | Special Weather Statement | JAN | 24 min |
| Jul 13, 9:34 PM CDT | Tornado Warning | JAN | 17 min |
| Jul 13, 10:18 PM CDT | Tornado Warning | JAN | 42 min |
| Jul 14, 9:20 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 9:45 AM CDT | Tornado Watch | SPC | 9 hr |
| Jul 14, 12:37 PM CDT | Severe Thunderstorm Warning | JAN | 31 min |
| Jul 14, 2:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 6:23 PM CDT | Mesoscale Discussion | SPC | 37 min |
| Jul 14, 8:32 PM CDT | Special Weather Statement | JAN | 28 min |
| Jul 21, 3:00 PM CDT | Special Weather Statement | JAN | 30 min |
| Jul 21, 3:30 PM CDT | Flash Flood Warning | JAN | 118 min |
| Aug 4, 3:34 PM CDT | Severe Thunderstorm Warning | JAN | 19 min |
| Aug 7, 3:33 PM CDT | Heat Advisory | JAN | 51 hr |
| Aug 10, 3:50 AM CDT | Heat Advisory | JAN | 71 hr |
| Aug 11, 3:57 AM CDT | Excessive Heat Warning | JAN | 64 hr |
| Aug 13, 3:13 PM CDT | Heat Advisory | JAN | 28 hr |
| Aug 14, 2:38 PM CDT | Special Weather Statement | JAN | 37 min |
| Aug 20, 6:17 AM CDT | Dense Fog Advisory | JAN | 3 hr |
| Sep 6, 3:28 PM CDT | Heat Advisory | JAN | 28 hr |
| Sep 8, 3:21 AM CDT | Heat Advisory | JAN | 15 hr |
| Sep 9, 2:44 PM CDT | Special Weather Statement | JAN | 31 min |
| Sep 9, 4:00 PM CDT | Special Weather Statement | JAN | 30 min |
| Sep 9, 4:06 PM CDT | Severe Thunderstorm Warning | JAN | 39 min |
| Sep 9, 4:45 PM CDT | Severe Thunderstorm Warning | JAN | 45 min |
| Oct 4, 8:16 PM CDT | Special Weather Statement | JAN | 29 min |
| Oct 4, 8:31 PM CDT | Severe Thunderstorm Warning | JAN | 22 min |
| Oct 4, 8:59 PM CDT | Special Weather Statement | JAN | 31 min |
| Oct 5, 8:38 PM CDT | Special Weather Statement | JAN | 37 min |
| Oct 24, 2:53 PM CDT | Flash Flood Watch | JAN | 46 hr |
| Oct 26, 5:04 AM CDT | Wind Advisory | JAN | 8 hr |
| Oct 26, 6:55 AM CDT | Severe Thunderstorm Warning | JAN | 50 min |
| Oct 30, 8:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Nov 8, 3:32 AM CST | Freeze Warning | JAN | 28 hr |
| Nov 11, 3:36 AM CST | Freeze Watch | JAN | 7 hr |
| Nov 11, 3:36 AM CST | Wind Advisory | JAN | 38 hr |
| Nov 11, 10:51 AM CST | Freeze Warning | JAN | 47 hr |
| Nov 27, 12:24 AM CST | Mesoscale Discussion | SPC | 96 min |
| Nov 27, 2:15 AM CST | Mesoscale Discussion | SPC | 90 min |
| Dec 13, 9:40 PM CST | Dense Fog Advisory | JAN | 11 hr |
| Dec 14, 8:04 PM CST | Dense Fog Advisory | JAN | 13 hr |
| Dec 16, 2:22 PM CST | Tornado Watch | SPC | 8 hr |
| Dec 16, 3:08 PM CST | Mesoscale Discussion | SPC | 67 min |
| Dec 16, 4:14 PM CST | Tornado Warning | JAN | 61 min |
| Dec 16, 4:32 PM CST | Mesoscale Discussion | SPC | 88 min |
| Dec 16, 5:03 PM CST | Tornado Warning | JAN | 57 min |
| Dec 16, 5:04 PM CST | Tornado Warning | JAN | 56 min |
| Dec 16, 5:12 PM CST | Tornado Warning | JAN | 42 min |
| Dec 16, 6:16 PM CST | Tornado Warning | JAN | 32 min |
| Dec 16, 7:06 PM CST | Severe Thunderstorm Warning | JAN | 39 min |
| Dec 16, 8:15 PM CST | Severe Thunderstorm Warning | JAN | 45 min |
| Dec 29, 12:58 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Dec 29, 5:41 PM CST | Special Weather Statement | JAN | 64 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 | 22 |
| Tornado Warning | 11 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 8 |
| Mesoscale Discussion | 29 |
| Special Weather Statement | 22 |
| Flooding | |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 6 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 6 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 1 |
| Wind and dust | |
| Wind Advisory | 3 |
| 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 archive20182020
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.