Alert archive / Mississippi / Bolivar County
Weather alerts in Bolivar County, Mississippi, 2011
210 weather alerts in 2011, 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 2011. Tap one for its archive.
- Alerts
- 210
- Warnings
- 68
- Watches
- 35
- Advisories
- 38
- Busiest month
- April72 alerts
- Busiest day
- April 27, 201119 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 14 tornado warnings covering Bolivar County in 2011 had a tornado report inside them; 6 of 6 tornado reports fell inside a warning, on average 16 minutes after it went out.
Bolivar County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 14 | 2 | 86% | 6 | 100% | 16 min |
| Severe thunderstorm warnings | 33 | 14 | 58% | 18 | 83% | 34 min |
| Flash flood warnings | 8 | 4 | 50% | 3 | 100% | 24 min |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: tornado warnings | 225 | 65 | 71% | 184 | 85% | 26 min |
| NWS Jackson, MS: severe thunderstorm warnings | 717 | 416 | 42% | 1,089 | 75% | 24 min |
| NWS Jackson, MS: flash flood warnings | 164 | 99 | 40% | 205 | 93% | 110 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 5, 10:53 PM CST | Dense Fog Advisory | JAN | 11 hr |
| Jan 7, 3:30 PM CST | Winter Storm Watch | JAN | 45 hr |
| Jan 8, 3:01 PM CST | Winter Storm Warning | JAN | 37 hr |
| Jan 9, 12:45 PM CST | Winter Weather Advisory | JAN | 23 hr |
| Jan 11, 4:36 AM CST | Hard Freeze Warning | JAN | 3 days |
| Jan 11, 4:47 AM CST | Wind Chill Advisory | JAN | 28 hr |
| Jan 31, 2:38 PM CST | Wind Advisory | JAN | 29 hr |
| Feb 1, 6:46 AM CST | Mesoscale Discussion | SPC | 119 min |
| Feb 1, 10:30 PM CST | Wind Chill Advisory | JAN | 10 hr |
| Feb 2, 3:54 PM CST | Winter Storm Watch | JAN | 25 hr |
| Feb 2, 5:40 PM CST | Hard Freeze Warning | JAN | 18 hr |
| Feb 3, 4:39 AM CST | Winter Storm Warning | JAN | 31 hr |
| Feb 4, 5:28 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 4, 12:03 PM CST | Winter Weather Advisory | JAN | 4 hr |
| Feb 7, 3:21 PM CST | Winter Storm Watch | JAN | 38 hr |
| Feb 8, 3:35 PM CST | Winter Storm Warning | JAN | 32 hr |
| Feb 9, 5:28 AM CST | Winter Weather Advisory | JAN | 22 hr |
| Feb 9, 10:03 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 9, 2:17 PM CST | Hard Freeze Warning | JAN | 45 hr |
| Feb 9, 3:03 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 20, 4:33 AM CST | Wind Advisory | JAN | 13 hr |
| Feb 20, 3:03 PM CST | Wind Advisory | JAN | 21 hr |
| Feb 23, 3:09 PM CST | Wind Advisory | JAN | 33 hr |
| Feb 24, 2:34 PM CST | Tornado Watch | SPC | 7 hr |
| Feb 24, 5:26 PM CST | Mesoscale Discussion | SPC | 94 min |
| Feb 24, 6:56 PM CST | Severe Thunderstorm Warning | JAN | 64 min |
| Feb 27, 4:06 AM CST | Wind Advisory | JAN | 26 hr |
| Feb 28, 5:28 AM CST | Mesoscale Discussion | SPC | 62 min |
| Feb 28, 5:59 AM CST | Tornado Watch | SPC | 7 hr |
| Mar 1, 4:50 PM CST | River Flood Advisory | JAN | 6 days |
| Mar 7, 12:44 PM CST | River Flood Advisory | JAN | 10 days |
| Mar 15, 1:47 PM CDT | River Flood Warning | JAN | 14 days |
| Mar 26, 2:27 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Mar 26, 3:27 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 26, 7:52 PM CDT | Severe Thunderstorm Warning | JAN | 38 min |
| Mar 26, 8:05 PM CDT | Severe Thunderstorm Warning | JAN | 40 min |
| Mar 26, 8:32 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Mar 29, 5:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 29, 6:26 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 2, 2:39 PM CDT | Wind Advisory | JAN | 29 hr |
| Apr 4, 12:05 AM CDT | Wind Advisory | JAN | 22 hr |
| Apr 4, 10:53 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 4, 11:01 AM CDT | Severe Thunderstorm Warning | JAN | 59 min |
| Apr 4, 11:58 AM CDT | Severe Thunderstorm Warning | JAN | 62 min |
| Apr 4, 1:05 PM CDT | Special Weather Statement | JAN | 25 min |
| Apr 11, 4:43 AM CDT | Wind Advisory | JAN | 11 hr |
| Apr 11, 9:46 AM CDT | Mesoscale Discussion | SPC | 29 min |
| Apr 11, 10:31 AM CDT | Tornado Watch | SPC | 6 hr |
| Apr 11, 12:37 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Apr 12, 2:05 PM CDT | River Flood Advisory | JAN | 8 days |
| Apr 15, 1:27 AM CDT | Mesoscale Discussion | SPC | 93 min |
| Apr 15, 2:19 AM CDT | Tornado Watch | SPC | 8 hr |
| Apr 15, 3:31 AM CDT | Special Weather Statement | JAN | 69 min |
| Apr 15, 4:14 AM CDT | Severe Thunderstorm Warning | JAN | 61 min |
| Apr 15, 4:21 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 15, 4:43 AM CDT | Tornado Warning | JAN | 47 min |
| Apr 15, 5:18 AM CDT | Severe Thunderstorm Warning | JAN | 42 min |
| Apr 15, 5:29 AM CDT | Tornado Warning | JAN | 61 min |
| Apr 18, 3:48 PM CDT | Wind Advisory | JAN | 27 hr |
| Apr 19, 10:14 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 20, 1:24 AM CDT | Severe Thunderstorm Warning | JAN | 51 min |
| Apr 20, 2:27 AM CDT | Special Weather Statement | JAN | 28 min |
| Apr 20, 2:41 AM CDT | Severe Thunderstorm Warning | JAN | 49 min |
| Apr 20, 3:10 AM CDT | Severe Thunderstorm Warning | JAN | 32 min |
| Apr 20, 3:37 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 20, 9:22 AM CDT | Flash Flood Watch | JAN | 31 hr |
| Apr 20, 11:37 AM CDT | River Flood Warning | JAN | 52 days |
| Apr 20, 12:46 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 20, 1:02 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 20, 5:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Apr 20, 5:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 20, 6:44 PM CDT | Severe Thunderstorm Warning | JAN | 46 min |
| Apr 20, 7:45 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 20, 10:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Apr 25, 4:01 AM CDT | Wind Advisory | JAN | 15 hr |
| Apr 25, 8:37 AM CDT | Mesoscale Discussion | SPC | 53 min |
| Apr 25, 7:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Apr 25, 9:12 PM CDT | Special Weather Statement | JAN | 68 min |
| Apr 25, 9:23 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 25, 9:55 PM CDT | Severe Thunderstorm Warning | JAN | 65 min |
| Apr 25, 10:52 PM CDT | Severe Thunderstorm Warning | JAN | 53 min |
| Apr 25, 11:05 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 25, 11:17 PM CDT | Flash Flood Warning | JAN | 98 min |
| Apr 25, 11:42 PM CDT | Severe Thunderstorm Warning | JAN | 48 min |
| Apr 26, 3:29 AM CDT | Tornado Warning | JAN | 46 min |
| Apr 26, 4:12 AM CDT | Severe Thunderstorm Warning | JAN | 33 min |
| Apr 26, 7:36 AM CDT | Flash Flood Watch | JAN | 32 hr |
| Apr 26, 1:48 PM CDT | Wind Advisory | JAN | 29 hr |
| Apr 26, 2:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Apr 26, 3:02 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 26, 6:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Apr 26, 6:20 PM CDT | Tornado Warning | JAN | 37 min |
| Apr 26, 9:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Apr 26, 9:33 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 26, 11:27 PM CDT | Flash Flood Warning | JAN | 2 hr |
| Apr 26, 11:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Apr 26, 11:41 PM CDT | Severe Thunderstorm Warning | JAN | 64 min |
| Apr 26, 11:44 PM CDT | Tornado Warning | JAN | 61 min |
| Apr 27, 4:53 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 27, 5:00 AM CDT | Special Weather Statement | JAN | 30 min |
| Apr 27, 5:38 AM CDT | Special Weather Statement | JAN | 27 min |
| Apr 27, 6:25 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Apr 27, 7:03 AM CDT | Severe Thunderstorm Warning | JAN | 42 min |
| Apr 27, 7:38 AM CDT | Severe Thunderstorm Warning | JAN | 52 min |
| Apr 27, 7:47 AM CDT | Flash Flood Warning | JAN | 3 hr |
| Apr 27, 9:25 AM CDT | Special Weather Statement | JAN | 60 min |
| Apr 27, 11:02 AM CDT | Tornado Watch | SPC | 8 hr |
| Apr 27, 11:06 AM CDT | Special Weather Statement | JAN | 29 min |
| Apr 27, 11:22 AM CDT | Severe Thunderstorm Warning | JAN | 53 min |
| Apr 27, 11:54 AM CDT | Severe Thunderstorm Warning | JAN | 36 min |
| Apr 27, 12:03 PM CDT | Tornado Warning | JAN | 40 min |
| May 1, 3:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| May 1, 5:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| May 2, 1:51 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 12, 4:00 PM CDT | Flash Flood Watch | JAN | 23 hr |
| May 13, 3:25 AM CDT | Severe Thunderstorm Warning | JAN | 36 min |
| May 13, 4:24 AM CDT | Special Weather Statement | JAN | 31 min |
| May 13, 12:31 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 20, 2:53 PM CDT | Flash Flood Watch | JAN | 19 hr |
| May 22, 8:34 AM CDT | Special Weather Statement | JAN | 26 min |
| May 25, 3:58 AM CDT | Wind Advisory | JAN | 15 hr |
| May 25, 3:16 PM CDT | Tornado Watch | SPC | 7 hr |
| May 25, 7:06 PM CDT | Severe Thunderstorm Warning | JAN | 54 min |
| May 25, 7:14 PM CDT | Tornado Warning | JAN | 61 min |
| May 25, 7:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 25, 7:38 PM CDT | Tornado Warning | JAN | 52 min |
| May 25, 8:14 PM CDT | Severe Thunderstorm Warning | JAN | 61 min |
| May 25, 8:29 PM CDT | Tornado Warning | JAN | 28 min |
| May 25, 9:00 PM CDT | Tornado Warning | JAN | 32 min |
| May 25, 9:27 PM CDT | Flash Flood Warning | JAN | 60 min |
| May 25, 9:45 PM CDT | Severe Thunderstorm Warning | JAN | 21 min |
| Jun 2, 2:48 PM CDT | Heat Advisory | JAN | 3 days |
| Jun 11, 10:06 PM CDT | Special Weather Statement | JAN | 44 min |
| Jun 13, 1:32 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 13, 2:45 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 13, 4:38 PM CDT | Severe Thunderstorm Warning | JAN | 82 min |
| Jun 15, 10:54 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 3:39 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 16, 6:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 17, 2:39 PM CDT | Heat Advisory | JAN | 3 days |
| Jun 19, 10:11 AM CDT | Excessive Heat Warning | JAN | 18 hr |
| Jun 21, 9:44 AM CDT | Special Weather Statement | JAN | 46 min |
| Jun 24, 12:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 24, 1:49 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 24, 3:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 28, 7:06 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 28, 8:53 AM CDT | Special Weather Statement | JAN | 57 min |
| Jun 28, 9:49 AM CDT | Special Weather Statement | JAN | 41 min |
| Jul 4, 12:52 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jul 4, 3:29 PM CDT | Special Weather Statement | JAN | 31 min |
| Jul 4, 5:04 PM CDT | Severe Thunderstorm Warning | JAN | 56 min |
| Jul 9, 4:39 AM CDT | Heat Advisory | JAN | 6 days |
| Jul 13, 1:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 13, 6:59 PM CDT | Special Weather Statement | JAN | 61 min |
| Jul 13, 7:24 PM CDT | Severe Thunderstorm Warning | JAN | 81 min |
| Jul 25, 7:00 PM CDT | Severe Thunderstorm Warning | JAN | 45 min |
| Jul 31, 4:00 AM CDT | Heat Advisory | JAN | 72 hr |
| Aug 1, 3:53 AM CDT | Excessive Heat Warning | JAN | 5 days |
| Aug 3, 2:49 PM CDT | Heat Advisory | JAN | 8 days |
| Aug 7, 4:05 AM CDT | Excessive Heat Warning | JAN | 15 hr |
| Aug 7, 4:05 AM CDT | Heat Advisory | JAN | 4 days |
| Aug 7, 1:46 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 8, 1:33 AM CDT | Special Weather Statement | JAN | 47 min |
| Aug 8, 8:39 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 8, 11:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 9, 2:39 AM CDT | Special Weather Statement | JAN | 31 min |
| Aug 11, 3:44 AM CDT | Special Weather Statement | JAN | 31 min |
| Aug 11, 4:13 AM CDT | Severe Thunderstorm Warning | JAN | 47 min |
| Aug 11, 4:55 AM CDT | Flash Flood Warning | JAN | 2 hr |
| Aug 12, 11:52 PM CDT | Special Weather Statement | JAN | 28 min |
| Aug 13, 2:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 18, 4:24 PM CDT | Heat Advisory | JAN | 3 days |
| Aug 22, 3:13 AM CDT | Heat Advisory | JAN | 4 days |
| Aug 23, 2:56 PM CDT | Special Weather Statement | JAN | 29 min |
| Aug 24, 8:58 AM CDT | Special Weather Statement | JAN | 72 min |
| Sep 2, 3:11 PM CDT | Flash Flood Watch | JAN | 3 days |
| Sep 3, 3:57 PM CDT | Wind Advisory | JAN | 52 hr |
| Sep 4, 4:47 PM CDT | Flash Flood Warning | JAN | 3 hr |
| Sep 14, 7:16 PM CDT | Special Weather Statement | JAN | 59 min |
| Sep 25, 2:03 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 25, 3:19 PM CDT | Tornado Watch | SPC | 9 hr |
| Sep 25, 6:10 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Sep 25, 6:20 PM CDT | Special Weather Statement | JAN | 55 min |
| Sep 25, 6:38 PM CDT | Severe Thunderstorm Warning | JAN | 52 min |
| Sep 25, 6:54 PM CDT | Tornado Warning | JAN | 51 min |
| Sep 25, 7:23 PM CDT | Tornado Warning | JAN | 21 min |
| Sep 25, 7:33 PM CDT | Severe Thunderstorm Warning | JAN | 57 min |
| Sep 25, 7:45 PM CDT | Severe Thunderstorm Warning | JAN | 60 min |
| Sep 25, 7:57 PM CDT | Tornado Warning | JAN | 48 min |
| Sep 25, 8:29 PM CDT | Severe Thunderstorm Warning | JAN | 61 min |
| Sep 25, 8:36 PM CDT | Tornado Warning | JAN | 54 min |
| Sep 25, 8:50 PM CDT | Flash Flood Warning | JAN | 115 min |
| Sep 27, 1:36 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Sep 27, 1:43 AM CDT | Special Weather Statement | JAN | 32 min |
| Sep 28, 12:03 AM CDT | Dense Fog Advisory | JAN | 9 hr |
| Sep 29, 3:59 AM CDT | Dense Fog Advisory | JAN | 5 hr |
| Oct 20, 4:54 PM CDT | Freeze Warning | JAN | 15 hr |
| Oct 28, 2:46 PM CDT | Freeze Watch | JAN | 27 hr |
| Nov 3, 8:43 AM CDT | Wind Advisory | JAN | 7 hr |
| Nov 8, 9:21 PM CST | Mesoscale Discussion | SPC | 84 min |
| Nov 10, 4:08 AM CST | Freeze Warning | JAN | 28 hr |
| Nov 13, 10:29 AM CST | Wind Advisory | JAN | 7 hr |
| Nov 26, 3:44 PM CST | Mesoscale Discussion | SPC | 91 min |
| Dec 2, 1:33 PM CST | River Flood Advisory | JAN | 20 days |
| Dec 7, 2:05 AM CST | Winter Weather Advisory | JAN | 8 hr |
| Dec 13, 7:57 PM CST | Dense Fog Advisory | JAN | 13 hr |
| Dec 22, 4:59 AM CST | Flash Flood Warning | JAN | 3 hr |
| Dec 22, 5:09 AM CST | Flash Flood Watch | JAN | 7 hr |
| Dec 22, 11:56 AM CST | River Flood Advisory | JAN | 10 min |
| Dec 25, 2:43 PM CST | Flood Watch | JAN | 31 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 | 33 |
| Tornado Warning | 14 |
| Severe Thunderstorm Watch | 11 |
| Tornado Watch | 13 |
| Mesoscale Discussion | 44 |
| Special Weather Statement | 25 |
| Flooding | |
| Flash Flood Warning | 8 |
| River Flood Warning | 2 |
| Flash Flood Watch | 6 |
| Flood Watch | 1 |
| River Flood Advisory | 5 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 4 |
| Heat | |
| Excessive Heat Warning | 3 |
| Heat Advisory | 8 |
| Cold | |
| Freeze Warning | 2 |
| Hard Freeze Warning | 3 |
| Freeze Watch | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 15 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20102012
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.