Alert archive / Missouri / Pettis County
Weather alerts in Pettis County, Missouri, 2011
189 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Pettis County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 189
- Warnings
- 61
- Watches
- 31
- Advisories
- 25
- Busiest month
- June44 alerts
- Busiest day
- May 25, 201115 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
3 of 4 tornado warnings covering Pettis County in 2011 had a tornado report inside them; 4 of 5 tornado reports fell inside a warning, on average 32 minutes after it went out.
Pettis County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 3 | 25% | 5 | 80% | 32 min |
| Severe thunderstorm warnings | 30 | 10 | 67% | 11 | 91% | 25 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Kansas City, MO: tornado warnings | 56 | 18 | 68% | 29 | 83% | 18 min |
| NWS Kansas City, MO: severe thunderstorm warnings | 359 | 198 | 45% | 552 | 82% | 21 min |
| NWS Kansas City, MO: flash flood warnings | 21 | 5 | 76% | 10 | 80% | 165 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 8, 1:02 PM CST | Winter Storm Watch | EAX | 25 hr |
| Jan 9, 1:40 PM CST | Winter Weather Advisory | EAX | 38 hr |
| Jan 11, 3:26 AM CST | Wind Chill Advisory | EAX | 31 hr |
| Jan 18, 10:59 AM CST | Winter Storm Watch | EAX | 17 hr |
| Jan 18, 9:42 PM CST | Winter Storm Warning | EAX | 36 hr |
| Jan 19, 2:12 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 19, 7:25 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 22, 3:49 AM CST | Winter Weather Advisory | EAX | 34 hr |
| Jan 29, 3:22 PM CST | Winter Storm Watch | EAX | 23 hr |
| Jan 30, 2:46 PM CST | Winter Storm Warning | EAX | 39 hr |
| Jan 31, 2:01 PM CST | Blizzard Warning | EAX | 38 hr |
| Feb 1, 3:11 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 1, 10:36 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 1, 9:30 PM CST | Wind Chill Advisory | EAX | 37 hr |
| Feb 7, 3:29 PM CST | Wind Chill Advisory | EAX | 21 hr |
| Feb 9, 3:47 PM CST | Wind Chill Advisory | EAX | 19 hr |
| Feb 16, 3:35 AM CST | River Flood Warning | EAX | 43 hr |
| Feb 21, 7:44 AM CST | River Flood Warning | EAX | 9 hr |
| Feb 23, 3:37 PM CST | Winter Weather Advisory | EAX | 32 hr |
| Feb 24, 10:22 PM CST | River Flood Warning | EAX | 15 hr |
| Feb 25, 10:56 PM CST | Winter Weather Advisory | EAX | 14 hr |
| Feb 26, 9:15 PM CST | Dense Fog Advisory | EAX | 20 hr |
| Feb 27, 10:08 AM CST | Flood Watch | EAX | 13 hr |
| Feb 27, 12:46 PM CST | Mesoscale Discussion | SPC | 59 min |
| Feb 27, 1:12 PM CST | Severe Thunderstorm Watch | SPC | 9 hr |
| Feb 27, 3:24 PM CST | Mesoscale Discussion | SPC | 66 min |
| Feb 27, 4:43 PM CST | Areal Flood Advisory | EAX | 6 hr |
| Feb 27, 4:50 PM CST | Severe Thunderstorm Warning | EAX | 25 min |
| Feb 27, 5:43 PM CST | River Flood Warning | EAX | 39 hr |
| Feb 27, 8:11 PM CST | Special Weather Statement | EAX | 49 min |
| Mar 4, 11:37 PM CST | River Flood Warning | EAX | 10 hr |
| Mar 13, 3:54 AM CDT | Winter Weather Advisory | EAX | 36 hr |
| Mar 13, 9:54 PM CDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 25, 3:36 PM CDT | Winter Weather Advisory | EAX | 26 hr |
| Apr 2, 8:52 PM CDT | Wind Advisory | EAX | 23 hr |
| Apr 3, 6:21 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 3, 10:11 PM CDT | Severe Thunderstorm Warning | EAX | 34 min |
| Apr 3, 10:33 PM CDT | Severe Thunderstorm Warning | EAX | 27 min |
| Apr 5, 3:54 AM CDT | Red Flag Warning | EAX | 15 hr |
| Apr 8, 8:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Apr 8, 9:01 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 8, 11:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Apr 8, 11:46 PM CDT | Special Weather Statement | EAX | 29 min |
| Apr 10, 3:35 AM CDT | Wind Advisory | EAX | 15 hr |
| Apr 10, 5:03 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Apr 15, 7:35 AM CDT | River Flood Warning | EAX | 39 hr |
| Apr 18, 11:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Apr 19, 2:53 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 19, 3:11 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 19, 12:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 21, 7:56 PM CDT | Special Weather Statement | EAX | 34 min |
| Apr 22, 4:15 PM CDT | Severe Thunderstorm Warning | EAX | 30 min |
| Apr 26, 5:48 AM CDT | River Flood Warning | EAX | 16 hr |
| May 3, 3:15 AM CDT | Frost Advisory | EAX | 29 hr |
| May 7, 3:40 AM CDT | Mesoscale Discussion | SPC | 95 min |
| May 11, 3:57 PM CDT | Mesoscale Discussion | SPC | 48 min |
| May 11, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 12, 4:54 PM CDT | Mesoscale Discussion | SPC | 66 min |
| May 12, 5:31 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 12, 6:12 PM CDT | Severe Thunderstorm Warning | EAX | 21 min |
| May 12, 6:16 PM CDT | Severe Thunderstorm Warning | EAX | 44 min |
| May 12, 6:42 PM CDT | Special Weather Statement | EAX | 33 min |
| May 20, 10:21 AM CDT | Special Weather Statement | EAX | 39 min |
| May 20, 6:38 PM CDT | River Flood Warning | EAX | 17 hr |
| May 21, 7:18 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 22, 10:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 12:51 PM CDT | Tornado Watch | SPC | 10 hr |
| May 22, 3:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| May 22, 5:20 PM CDT | Special Weather Statement | EAX | 40 min |
| May 22, 5:29 PM CDT | Severe Thunderstorm Warning | EAX | 46 min |
| May 22, 6:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 22, 7:52 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 23, 6:08 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 23, 10:11 AM CDT | Special Weather Statement | EAX | 34 min |
| May 23, 10:20 AM CDT | Severe Thunderstorm Warning | EAX | 25 min |
| May 24, 1:35 PM CDT | Mesoscale Discussion | SPC | 25 min |
| May 24, 1:38 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 24, 1:43 PM CDT | Severe Thunderstorm Warning | EAX | 47 min |
| May 24, 7:26 PM CDT | Tornado Watch | SPC | 7 hr |
| May 24, 11:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 24, 11:53 PM CDT | Special Weather Statement | EAX | 52 min |
| May 25, 12:12 AM CDT | Severe Thunderstorm Warning | EAX | 33 min |
| May 25, 8:02 AM CDT | River Flood Warning | EAX | 36 hr |
| May 25, 10:37 AM CDT | Tornado Watch | SPC | 7 hr |
| May 25, 11:11 AM CDT | Severe Thunderstorm Warning | EAX | 34 min |
| May 25, 11:19 AM CDT | Tornado Warning | EAX | 26 min |
| May 25, 11:43 AM CDT | Severe Thunderstorm Warning | EAX | 47 min |
| May 25, 11:51 AM CDT | Tornado Warning | EAX | 39 min |
| May 25, 12:15 PM CDT | Severe Thunderstorm Warning | EAX | 45 min |
| May 25, 12:25 PM CDT | Tornado Warning | EAX | 35 min |
| May 25, 12:51 PM CDT | Tornado Warning | EAX | 26 min |
| May 25, 1:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| May 25, 1:51 PM CDT | Special Weather Statement | EAX | 24 min |
| Jun 9, 3:05 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 9, 7:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 10, 4:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 10, 4:57 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 6:13 PM CDT | Special Weather Statement | EAX | 47 min |
| Jun 10, 6:34 PM CDT | Severe Thunderstorm Warning | EAX | 41 min |
| Jun 10, 7:09 PM CDT | Severe Thunderstorm Warning | EAX | 36 min |
| Jun 10, 7:12 PM CDT | Severe Thunderstorm Warning | EAX | 33 min |
| Jun 10, 7:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 13, 2:41 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 5:16 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 13, 6:52 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 13, 7:46 AM CDT | Special Weather Statement | EAX | 29 min |
| Jun 13, 8:34 AM CDT | Special Weather Statement | EAX | 41 min |
| Jun 13, 10:04 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 14, 3:53 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 14, 7:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 15, 12:29 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 17, 6:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 17, 8:19 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 18, 2:07 AM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 18, 2:16 AM CDT | Severe Thunderstorm Warning | EAX | 44 min |
| Jun 18, 2:44 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 18, 2:56 AM CDT | Severe Thunderstorm Warning | EAX | 34 min |
| Jun 18, 3:28 AM CDT | Severe Thunderstorm Warning | EAX | 47 min |
| Jun 18, 6:03 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jun 18, 7:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 18, 7:59 PM CDT | Special Weather Statement | EAX | 31 min |
| Jun 18, 8:18 PM CDT | Severe Thunderstorm Warning | EAX | 27 min |
| Jun 18, 8:44 PM CDT | Severe Thunderstorm Warning | EAX | 46 min |
| Jun 18, 9:20 PM CDT | Severe Thunderstorm Warning | EAX | 25 min |
| Jun 18, 9:30 PM CDT | Severe Thunderstorm Warning | EAX | 30 min |
| Jun 18, 11:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 20, 8:32 PM CDT | Tornado Watch | SPC | 4 hr |
| Jun 20, 11:40 PM CDT | Special Weather Statement | EAX | 50 min |
| Jun 25, 3:51 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 25, 7:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 25, 7:36 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 27, 12:58 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 27, 1:32 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 27, 5:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 27, 6:19 AM CDT | Special Weather Statement | EAX | 41 min |
| Jun 28, 3:00 PM CDT | Excessive Heat Watch | EAX | 61 hr |
| Jun 29, 3:47 PM CDT | Excessive Heat Warning | EAX | 51 hr |
| Jul 1, 6:37 PM CDT | Excessive Heat Warning | EAX | 24 hr |
| Jul 3, 12:26 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Jul 3, 1:08 PM CDT | Special Weather Statement | EAX | 52 min |
| Jul 8, 3:49 PM CDT | Heat Advisory | EAX | 60 hr |
| Jul 9, 9:23 PM CDT | Excessive Heat Warning | EAX | 69 hr |
| Jul 12, 4:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jul 12, 10:37 PM CDT | Special Weather Statement | EAX | 23 min |
| Jul 12, 11:01 PM CDT | Special Weather Statement | EAX | 29 min |
| Jul 14, 2:50 PM CDT | Excessive Heat Watch | EAX | 23 hr |
| Jul 14, 2:50 PM CDT | Excessive Heat Warning | EAX | 14 days |
| Jul 29, 3:24 AM CDT | Excessive Heat Watch | EAX | 36 hr |
| Jul 29, 4:08 PM CDT | Excessive Heat Warning | EAX | 5 days |
| Aug 4, 2:10 AM CDT | Mesoscale Discussion | SPC | 80 min |
| Aug 4, 3:28 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 4, 5:00 AM CDT | Special Weather Statement | EAX | 45 min |
| Aug 5, 3:49 PM CDT | Heat Advisory | EAX | 50 hr |
| Aug 7, 12:55 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 7, 3:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 7, 3:42 PM CDT | Severe Thunderstorm Warning | EAX | 33 min |
| Aug 7, 4:13 PM CDT | Severe Thunderstorm Warning | EAX | 32 min |
| Aug 7, 4:25 PM CDT | Special Weather Statement | EAX | 50 min |
| Aug 7, 5:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Aug 18, 6:00 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Aug 18, 8:09 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 18, 11:46 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Aug 19, 12:31 AM CDT | Severe Thunderstorm Warning | EAX | 59 min |
| Aug 19, 12:42 AM CDT | Areal Flood Advisory | EAX | 5 hr |
| Aug 19, 12:59 AM CDT | Severe Thunderstorm Warning | EAX | 46 min |
| Aug 19, 1:19 AM CDT | Severe Thunderstorm Warning | EAX | 26 min |
| Aug 19, 1:38 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Aug 19, 1:44 AM CDT | Severe Thunderstorm Warning | EAX | 31 min |
| Aug 20, 2:28 AM CDT | Mesoscale Discussion | SPC | 62 min |
| Aug 20, 3:04 AM CDT | Severe Thunderstorm Warning | EAX | 41 min |
| Aug 20, 3:33 AM CDT | Special Weather Statement | EAX | 57 min |
| Aug 23, 3:32 AM CDT | Heat Advisory | EAX | 39 hr |
| Sep 1, 10:21 AM CDT | Heat Advisory | EAX | 30 hr |
| Sep 29, 2:02 PM CDT | Red Flag Warning | EAX | 5 hr |
| Oct 6, 3:48 AM CDT | Red Flag Warning | EAX | 15 hr |
| Oct 12, 3:46 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Oct 18, 3:47 AM CDT | Frost Advisory | EAX | 28 hr |
| Oct 19, 4:15 AM CDT | Frost Advisory | EAX | 28 hr |
| Oct 20, 4:20 AM CDT | Freeze Warning | EAX | 28 hr |
| Oct 27, 3:12 AM CDT | Frost Advisory | EAX | 29 hr |
| Oct 28, 3:37 AM CDT | Freeze Warning | EAX | 28 hr |
| Oct 28, 3:41 PM CDT | Red Flag Warning | EAX | 27 hr |
| Oct 30, 4:06 AM CDT | Red Flag Warning | EAX | 14 hr |
| Nov 9, 3:14 AM CST | Special Weather Statement | EAX | 76 min |
| Nov 18, 3:45 AM CST | Wind Advisory | EAX | 13 hr |
| Nov 18, 12:39 PM CST | Red Flag Warning | EAX | 5 hr |
| Nov 19, 10:43 AM CST | Wind Advisory | EAX | 4 hr |
| Dec 20, 1:30 AM CST | River Flood Warning | EAX | 31 hr |
| Dec 31, 3:48 AM CST | Red Flag Warning | EAX | 14 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 | 30 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 18 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 50 |
| Special Weather Statement | 22 |
| Flooding | |
| River Flood Warning | 10 |
| Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 6 |
| Heat | |
| Excessive Heat Warning | 5 |
| Excessive Heat Watch | 3 |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 2 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
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.