Alert archive / Mississippi / Bolivar County
Weather alerts in Bolivar County, Mississippi, 2012
140 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Bolivar County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 140
- Warnings
- 33
- Watches
- 23
- Advisories
- 19
- Busiest month
- August31 alerts
- Busiest day
- August 13, 201212 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 2 tornado warnings covering Bolivar County in 2012 had a tornado report inside them; 2 of 3 tornado reports fell inside a warning, on average 20 minutes after it went out.
Bolivar County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 3 | 67% | 20 min |
| Severe thunderstorm warnings | 22 | 12 | 45% | 15 | 93% | 39 min |
| Flash flood warnings | 5 | 2 | 60% | 3 | 67% | 113 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 12, 3:47 AM CST | Wind Advisory | JAN | 14 hr |
| Jan 20, 10:35 PM CST | Tornado Watch | SPC | 8 hr |
| Jan 21, 1:52 AM CST | Mesoscale Discussion | SPC | 113 min |
| Jan 22, 1:31 AM CST | Dense Fog Advisory | JAN | 7 hr |
| Jan 22, 2:26 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 22, 5:16 PM CST | Tornado Watch | SPC | 6 hr |
| Jan 22, 8:37 PM CST | Mesoscale Discussion | SPC | 83 min |
| Jan 22, 9:47 PM CST | Mesoscale Discussion | SPC | 58 min |
| Jan 22, 10:06 PM CST | Severe Thunderstorm Warning | JAN | 39 min |
| Jan 22, 10:36 PM CST | Severe Thunderstorm Warning | JAN | 54 min |
| Jan 22, 10:59 PM CST | Tornado Watch | SPC | 7 hr |
| Jan 22, 11:17 PM CST | Severe Thunderstorm Warning | JAN | 28 min |
| Feb 1, 2:58 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 1, 3:45 PM CST | Severe Thunderstorm Watch | SPC | 3 hr |
| Feb 1, 4:33 PM CST | Severe Thunderstorm Warning | JAN | 57 min |
| Feb 1, 5:24 PM CST | Severe Thunderstorm Warning | JAN | 43 min |
| Feb 13, 9:29 AM CST | Winter Weather Advisory | JAN | 3 hr |
| Feb 23, 4:55 AM CST | Wind Advisory | JAN | 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, 2:15 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 2, 3:18 AM CST | Wind Advisory | JAN | 13 hr |
| Mar 2, 1:47 PM CST | Severe Thunderstorm Watch | SPC | 9 hr |
| Mar 2, 2:29 PM CST | Severe Thunderstorm Warning | JAN | 61 min |
| Mar 11, 5:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Mar 12, 4:02 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Mar 19, 3:00 PM CDT | Wind Advisory | JAN | 28 hr |
| Mar 31, 12:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| 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, 3:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 2, 4:44 PM CDT | Severe Thunderstorm Warning | JAN | 61 min |
| Apr 3, 11:36 AM CDT | Special Weather Statement | JAN | 29 min |
| Apr 3, 12:29 PM CDT | Special Weather Statement | JAN | 26 min |
| Apr 3, 3:41 PM CDT | Flash Flood Warning | JAN | 2 hr |
| Apr 5, 1:53 AM CDT | Tornado Watch | SPC | 9 hr |
| Apr 14, 3:03 PM CDT | Wind Advisory | JAN | 28 hr |
| Apr 25, 2:52 AM CDT | Wind Advisory | JAN | 16 hr |
| May 2, 4:24 PM CDT | Special Weather Statement | JAN | 46 min |
| May 14, 4:35 AM CDT | Dense Fog Advisory | JAN | 3 hr |
| May 21, 5:27 PM CDT | Special Weather Statement | JAN | 18 min |
| May 30, 11:49 AM CDT | Special Weather Statement | JAN | 41 min |
| May 30, 12:07 PM CDT | Mesoscale Discussion | SPC | 83 min |
| May 30, 12:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 30, 12:39 PM CDT | Special Weather Statement | JAN | 31 min |
| May 30, 12:46 PM CDT | Severe Thunderstorm Warning | JAN | 59 min |
| May 30, 2:34 PM CDT | Mesoscale Discussion | SPC | 56 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, 12:16 PM CDT | Special Weather Statement | JAN | 44 min |
| May 31, 12:59 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 31, 1:07 PM CDT | Severe Thunderstorm Warning | JAN | 53 min |
| May 31, 1:29 PM CDT | Severe Thunderstorm Warning | JAN | 50 min |
| May 31, 2:38 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 4, 5:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 4, 7:08 PM CDT | Severe Thunderstorm Warning | JAN | 52 min |
| Jun 4, 7:59 PM CDT | Severe Thunderstorm Warning | JAN | 61 min |
| Jun 4, 8:03 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 4, 8:50 PM CDT | Flash Flood Warning | JAN | 3 hr |
| Jun 4, 9:02 PM CDT | Special Weather Statement | JAN | 33 min |
| Jun 11, 5:00 PM CDT | Severe Thunderstorm Warning | JAN | 75 min |
| Jun 11, 5:05 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Jun 11, 5:17 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 12, 1:15 AM CDT | Special Weather Statement | JAN | 50 min |
| Jun 12, 2:47 AM CDT | Flash Flood Warning | JAN | 3 hr |
| Jun 12, 3:23 AM CDT | Special Weather Statement | JAN | 62 min |
| Jun 12, 5:50 AM CDT | Areal Flood Warning | JAN | 3 hr |
| Jun 29, 3:44 AM CDT | Heat Advisory | JAN | 66 hr |
| Jul 6, 5:08 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 6, 6:15 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 8:49 AM CDT | Special Weather Statement | JAN | 61 min |
| Jul 20, 12:47 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 2:47 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 3:53 AM CDT | Heat Advisory | JAN | 4 days |
| Jul 30, 2:45 AM CDT | Excessive Heat Warning | JAN | 65 hr |
| Aug 5, 2:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Aug 8, 7:38 PM CDT | Special Weather Statement | JAN | 32 min |
| Aug 8, 7:40 PM CDT | Severe Thunderstorm Warning | JAN | 35 min |
| Aug 13, 7:12 AM CDT | Special Weather Statement | JAN | 58 min |
| Aug 13, 7:31 AM CDT | Severe Thunderstorm Warning | JAN | 59 min |
| Aug 13, 7:48 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Aug 13, 8:50 AM CDT | Flash Flood Warning | JAN | 63 min |
| Aug 13, 8:59 AM CDT | Special Weather Statement | JAN | 31 min |
| Aug 13, 3:02 PM CDT | Special Weather Statement | JAN | 48 min |
| 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, 4:18 PM CDT | Special Weather Statement | JAN | 52 min |
| Aug 13, 4:36 PM CDT | Severe Thunderstorm Warning | JAN | 39 min |
| Aug 13, 5:25 PM CDT | Severe Thunderstorm Warning | JAN | 65 min |
| Aug 13, 6:30 PM CDT | Severe Thunderstorm Warning | JAN | 60 min |
| Aug 13, 7:14 PM CDT | Severe Thunderstorm Warning | JAN | 61 min |
| Aug 13, 7:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 17, 1:58 AM CDT | Special Weather Statement | JAN | 32 min |
| Aug 17, 2:09 AM CDT | Special Weather Statement | JAN | 31 min |
| Aug 17, 11:38 PM CDT | Special Weather Statement | JAN | 57 min |
| Aug 18, 12:19 AM CDT | Severe Thunderstorm Warning | JAN | 41 min |
| Aug 18, 9:12 AM CDT | Special Weather Statement | JAN | 28 min |
| Aug 18, 9:41 AM CDT | Special Weather Statement | JAN | 29 min |
| Aug 27, 4:32 PM CDT | Flash Flood Watch | JAN | 3 days |
| Aug 29, 4:44 PM CDT | Wind Advisory | JAN | 23 hr |
| Aug 30, 3:56 PM CDT | Tornado Watch | SPC | 6 hr |
| Aug 30, 6:39 PM CDT | Flash Flood Warning | JAN | 111 min |
| Aug 30, 7:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Aug 30, 8:29 PM CDT | Areal Flood Warning | JAN | 12 hr |
| Aug 30, 9:05 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Aug 30, 9:44 PM CDT | Tornado Watch | SPC | 5 hr |
| Sep 1, 9:46 PM CDT | Special Weather Statement | JAN | 39 min |
| 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, 9:48 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Sep 3, 3:32 AM CDT | Heat Advisory | JAN | 5 days |
| Sep 7, 10:49 PM CDT | Special Weather Statement | JAN | 61 min |
| Sep 29, 4:02 AM CDT | Flash Flood Watch | JAN | 45 hr |
| Oct 14, 3:26 AM CDT | Wind Advisory | JAN | 13 hr |
| Oct 14, 5:58 AM CDT | Special Weather Statement | JAN | 62 min |
| Oct 14, 6:44 AM CDT | Special Weather Statement | JAN | 31 min |
| Oct 17, 4:17 AM CDT | Wind Advisory | JAN | 15 hr |
| Oct 17, 3:44 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Oct 17, 6:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Oct 17, 7:01 PM CDT | Tornado Watch | SPC | 8 hr |
| Oct 17, 7:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Oct 17, 8:41 PM CDT | Severe Thunderstorm Warning | JAN | 64 min |
| Oct 17, 8:48 PM CDT | Tornado Warning | JAN | 41 min |
| Oct 17, 9:02 PM CDT | Tornado Warning | JAN | 43 min |
| Oct 17, 9:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Nov 11, 3:41 AM CST | Wind Advisory | JAN | 14 hr |
| Nov 12, 2:44 PM CST | Freeze Warning | JAN | 17 hr |
| Nov 28, 6:39 AM CST | Freezing Fog Advisory | JAN | 2 hr |
| Dec 8, 8:25 AM CST | Special Weather Statement | JAN | 45 min |
| Dec 9, 5:47 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Dec 9, 8:38 PM CST | Mesoscale Discussion | SPC | 67 min |
| Dec 16, 12:56 AM CST | Special Weather Statement | JAN | 29 min |
| Dec 19, 9:53 AM CST | Wind Advisory | JAN | 32 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, 2:59 AM CST | Severe Thunderstorm Warning | JAN | 76 min |
| Dec 20, 4:08 AM CST | Mesoscale Discussion | SPC | 67 min |
| Dec 25, 5:03 AM CST | Wind Advisory | JAN | 25 hr |
| Dec 25, 10:17 AM CST | Flash Flood Watch | JAN | 9 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 | 22 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 12 |
| Tornado Watch | 8 |
| Mesoscale Discussion | 38 |
| Special Weather Statement | 27 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 5 |
| Flash Flood Watch | 3 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 1 |
| Wind and dust | |
| Wind Advisory | 12 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
| Freezing Fog Advisory | 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.