Alert archive / Mississippi / Yazoo County
Weather alerts in Yazoo County, Mississippi, 2012
183 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Yazoo County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 183
- Warnings
- 55
- Watches
- 30
- Advisories
- 16
- Busiest month
- March29 alerts
- Busiest day
- April 5, 201211 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 6 tornado warnings covering Yazoo County in 2012 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 16 minutes after it went out.
Yazoo County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 6 | 2 | 67% | 1 | 100% | 16 min |
| Severe thunderstorm warnings | 40 | 18 | 55% | 26 | 88% | 30 min |
| Flash flood warnings | 4 | 3 | 25% | 4 | 50% | 64 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 9, 5:04 AM CST | Dense Fog Advisory | JAN | 5 hr |
| Jan 10, 4:08 PM CST | Mesoscale Discussion | SPC | 82 min |
| Jan 10, 5:15 PM CST | Special Weather Statement | JAN | 30 min |
| Jan 10, 6:24 PM CST | Flash Flood Warning | JAN | 2 hr |
| Jan 12, 3:47 AM CST | Wind Advisory | JAN | 14 hr |
| Jan 22, 9:47 PM CST | Mesoscale Discussion | SPC | 58 min |
| Jan 22, 10:59 PM CST | Tornado Watch | SPC | 7 hr |
| Jan 23, 12:58 AM CST | Severe Thunderstorm Warning | JAN | 33 min |
| Jan 23, 1:25 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 25, 4:49 PM CST | Mesoscale Discussion | SPC | 86 min |
| Jan 25, 6:15 PM CST | Severe Thunderstorm Warning | JAN | 25 min |
| Feb 4, 2:34 AM CST | Flash Flood Watch | JAN | 12 hr |
| Feb 4, 10:16 AM CST | Special Weather Statement | JAN | 44 min |
| Feb 4, 4:54 PM CST | River Flood Warning | JAN | 5 days |
| Feb 23, 4:55 AM CST | Wind Advisory | JAN | 14 hr |
| Feb 29, 11:46 AM CST | Mesoscale Discussion | SPC | 89 min |
| Feb 29, 2:15 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Feb 29, 4:06 PM CST | Severe Thunderstorm Warning | JAN | 39 min |
| Feb 29, 4:32 PM CST | Severe Thunderstorm Warning | JAN | 43 min |
| Feb 29, 4:48 PM CST | Severe Thunderstorm Warning | JAN | 42 min |
| Feb 29, 5:09 PM CST | Severe Thunderstorm Warning | JAN | 36 min |
| Feb 29, 7:01 PM CST | Mesoscale Discussion | SPC | 59 min |
| Mar 2, 3:18 AM CST | Wind Advisory | JAN | 13 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, 1:26 PM CST | Mesoscale Discussion | SPC | 64 min |
| Mar 2, 3:47 PM CST | Mesoscale Discussion | SPC | 58 min |
| Mar 2, 6:03 PM CST | Severe Thunderstorm Warning | JAN | 57 min |
| Mar 2, 6:16 PM CST | Severe Thunderstorm Warning | JAN | 74 min |
| Mar 2, 6:50 PM CST | Severe Thunderstorm Warning | JAN | 55 min |
| Mar 2, 7:18 PM CST | Tornado Warning | JAN | 22 min |
| Mar 2, 7:18 PM CST | Mesoscale Discussion | SPC | 57 min |
| Mar 11, 6:42 PM CDT | Tornado Watch | SPC | 8 hr |
| Mar 11, 8:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Mar 11, 8:53 PM CDT | Severe Thunderstorm Warning | JAN | 52 min |
| Mar 11, 9:03 PM CDT | Severe Thunderstorm Warning | JAN | 42 min |
| Mar 11, 9:27 PM CDT | Severe Thunderstorm Warning | JAN | 27 min |
| Mar 11, 10:06 PM CDT | Special Weather Statement | JAN | 29 min |
| Mar 11, 10:30 PM CDT | Severe Thunderstorm Warning | JAN | 45 min |
| Mar 12, 6:32 AM CDT | River Flood Warning | JAN | 3 days |
| Mar 12, 4:02 PM CDT | Mesoscale Discussion | SPC | 58 min |
| 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, 11:32 AM CDT | Severe Thunderstorm Warning | JAN | 58 min |
| Mar 21, 12:05 PM CDT | Severe Thunderstorm Warning | JAN | 55 min |
| Mar 21, 12:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Mar 21, 12:56 PM CDT | Special Weather Statement | JAN | 29 min |
| Mar 22, 8:33 AM CDT | River Flood Warning | JAN | 9 days |
| 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, 3:50 PM CDT | Severe Thunderstorm Warning | JAN | 55 min |
| Apr 2, 4:25 PM CDT | Severe Thunderstorm Warning | JAN | 65 min |
| Apr 3, 10:42 AM CDT | Severe Thunderstorm Warning | JAN | 33 min |
| Apr 3, 11:49 AM CDT | Special Weather Statement | JAN | 31 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 5, 1:53 AM CDT | Tornado Watch | SPC | 9 hr |
| Apr 5, 3:30 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 4:44 AM CDT | Special Weather Statement | JAN | 31 min |
| Apr 5, 4:59 AM CDT | Severe Thunderstorm Warning | JAN | 46 min |
| Apr 5, 6:35 AM CDT | Severe Thunderstorm Warning | JAN | 55 min |
| Apr 5, 6:41 AM CDT | Severe Thunderstorm Warning | JAN | 64 min |
| Apr 5, 7:08 AM CDT | Severe Thunderstorm Warning | JAN | 67 min |
| Apr 5, 7:12 AM CDT | Tornado Warning | JAN | 33 min |
| Apr 5, 7:29 AM CDT | Tornado Warning | JAN | 19 min |
| Apr 5, 7:36 AM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 5, 7:38 AM CDT | Severe Thunderstorm Warning | JAN | 46 min |
| Apr 11, 2:31 AM CDT | Special Weather Statement | JAN | 74 min |
| Apr 14, 3:03 PM CDT | Wind Advisory | JAN | 28 hr |
| Apr 17, 9:54 AM CDT | Flash Flood Warning | JAN | 4 hr |
| Apr 18, 5:47 AM CDT | River Flood Warning | JAN | 52 hr |
| May 7, 11:00 AM CDT | Mesoscale Discussion | SPC | 90 min |
| May 7, 11:33 AM CDT | Special Weather Statement | JAN | 62 min |
| May 7, 12:30 PM CDT | Special Weather Statement | JAN | 60 min |
| May 14, 4:35 AM CDT | Dense Fog Advisory | JAN | 3 hr |
| May 21, 2:40 PM CDT | Severe Thunderstorm Warning | JAN | 23 min |
| May 21, 3:53 PM CDT | Severe Thunderstorm Warning | JAN | 12 min |
| May 21, 4:35 PM CDT | Mesoscale Discussion | SPC | 55 min |
| May 21, 4:38 PM CDT | Special Weather Statement | JAN | 32 min |
| May 21, 6:27 PM CDT | Severe Thunderstorm Warning | JAN | 33 min |
| May 21, 6:30 PM CDT | Severe Thunderstorm Warning | JAN | 30 min |
| May 21, 7:36 PM CDT | Severe Thunderstorm Warning | JAN | 39 min |
| May 21, 9:49 PM CDT | Severe Thunderstorm Warning | JAN | 56 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, 2:34 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 30, 3:33 PM CDT | Special Weather Statement | JAN | 32 min |
| May 30, 3:39 PM CDT | Severe Thunderstorm Warning | JAN | 51 min |
| May 30, 3:52 PM CDT | Severe Thunderstorm Warning | JAN | 23 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, 1:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 31, 2:38 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 31, 4:19 PM CDT | Special Weather Statement | JAN | 61 min |
| Jun 4, 5:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 4, 8:03 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 4, 8:41 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 4, 10:32 PM CDT | Special Weather Statement | JAN | 58 min |
| Jun 4, 11:05 PM CDT | Special Weather Statement | JAN | 55 min |
| Jun 4, 11:29 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Jun 11, 5:17 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 11, 7:13 PM CDT | Severe Thunderstorm Warning | JAN | 62 min |
| Jun 11, 7:33 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Jun 11, 7:49 PM CDT | Severe Thunderstorm Warning | JAN | 56 min |
| Jun 15, 2:53 PM CDT | Severe Thunderstorm Warning | JAN | 46 min |
| Jun 29, 3:44 AM CDT | Heat Advisory | JAN | 66 hr |
| Jul 5, 3:58 PM CDT | Severe Thunderstorm Warning | JAN | 32 min |
| Jul 6, 5:08 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 6, 6:15 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 6:54 PM CDT | Special Weather Statement | JAN | 31 min |
| Jul 15, 6:03 PM CDT | Flash Flood Warning | JAN | 85 min |
| Jul 18, 7:53 PM CDT | Special Weather Statement | JAN | 32 min |
| Jul 19, 4:10 PM CDT | Special Weather Statement | JAN | 30 min |
| Jul 19, 4:13 PM CDT | Severe Thunderstorm Warning | JAN | 47 min |
| Jul 19, 5:17 PM CDT | Special Weather Statement | JAN | 33 min |
| Jul 20, 12:47 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 3:53 AM CDT | Heat Advisory | JAN | 4 days |
| Aug 1, 3:02 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 3, 11:56 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Aug 3, 12:14 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 13, 7:48 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Aug 13, 3:32 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 13, 7:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 13, 9:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Aug 13, 11:46 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Aug 17, 10:08 AM CDT | Special Weather Statement | JAN | 32 min |
| Aug 17, 7:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 17, 8:16 PM CDT | Special Weather Statement | JAN | 39 min |
| Aug 18, 12:48 PM CDT | Special Weather Statement | JAN | 57 min |
| Aug 18, 1:03 PM CDT | Severe Thunderstorm Warning | JAN | 28 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, 7:13 AM CDT | Tornado Watch | SPC | 9 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, 9:05 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Aug 30, 9:44 PM CDT | Tornado Watch | SPC | 5 hr |
| Sep 3, 3:32 AM CDT | Heat Advisory | JAN | 5 days |
| Sep 29, 4:02 AM CDT | Flash Flood Watch | JAN | 45 hr |
| Sep 30, 5:50 PM CDT | Tornado Watch | SPC | 8 hr |
| Sep 30, 6:50 PM CDT | Special Weather Statement | JAN | 75 min |
| Sep 30, 7:37 PM CDT | Flash Flood Warning | JAN | 3 hr |
| Oct 14, 7:50 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 14, 8:59 PM CDT | Special Weather Statement | JAN | 46 min |
| Oct 14, 9:37 PM CDT | Special Weather Statement | JAN | 48 min |
| Oct 17, 4:17 AM CDT | Wind Advisory | JAN | 15 hr |
| Oct 17, 6:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Oct 17, 7:01 PM CDT | Tornado Watch | SPC | 8 hr |
| Oct 17, 9:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Oct 17, 10:25 PM CDT | Severe Thunderstorm Warning | JAN | 65 min |
| Oct 17, 10:37 PM CDT | Tornado Warning | JAN | 53 min |
| Oct 17, 11:13 PM CDT | Tornado Warning | JAN | 47 min |
| Oct 17, 11:27 PM CDT | Tornado Warning | JAN | 48 min |
| Oct 17, 11:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Nov 12, 12:38 AM CST | Special Weather Statement | JAN | 37 min |
| Nov 12, 2:44 PM CST | Freeze Warning | JAN | 17 hr |
| Nov 26, 11:45 AM CST | Special Weather Statement | JAN | 45 min |
| Nov 26, 10:14 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Nov 26, 11:20 PM CST | Special Weather Statement | JAN | 45 min |
| Nov 26, 11:38 PM CST | Special Weather Statement | JAN | 32 min |
| Nov 27, 12:04 AM CST | Special Weather Statement | JAN | 51 min |
| Nov 28, 6:39 AM CST | Freezing Fog Advisory | JAN | 2 hr |
| Dec 8, 4:03 AM CST | Dense Fog Advisory | JAN | 6 hr |
| Dec 9, 9:59 PM CST | Mesoscale Discussion | SPC | 61 min |
| Dec 9, 11:24 PM CST | Special Weather Statement | JAN | 46 min |
| Dec 9, 11:24 PM CST | Mesoscale Discussion | SPC | 66 min |
| Dec 16, 4:33 PM CST | Special Weather Statement | JAN | 57 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, 4:08 AM CST | Mesoscale Discussion | SPC | 67 min |
| Dec 20, 4:18 AM CST | Severe Thunderstorm Warning | JAN | 72 min |
| Dec 25, 5:03 AM CST | Wind Advisory | JAN | 25 hr |
| Dec 25, 10:17 AM CST | Flash Flood Watch | JAN | 9 hr |
| Dec 25, 12:58 PM CST | Tornado Watch | SPC | 9 hr |
| Dec 26, 6:30 AM CST | River Flood Warning | JAN | 51 hr |
| Dec 28, 9:02 AM CST | Flash Flood Watch | JAN | 11 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 | 39 |
| Tornado Warning | 6 |
| Severe Thunderstorm Watch | 13 |
| Tornado Watch | 11 |
| Mesoscale Discussion | 51 |
| Special Weather Statement | 31 |
| Flooding | |
| Flash Flood Warning | 4 |
| River Flood Warning | 5 |
| Flash Flood Watch | 6 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 1 |
| Wind and dust | |
| Wind Advisory | 9 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| 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.