Alert archive / Missouri / Pettis County
Weather alerts in Pettis County, Missouri, 2012
81 weather alerts in 2012, 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 2012. Tap one for its archive.
- Alerts
- 81
- Warnings
- 17
- Watches
- 7
- Advisories
- 26
- Busiest month
- May14 alerts
- Busiest day
- April 30, 20125 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Pettis County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 2 | 50% | 2 | 100% | 11 min |
| Flash flood warnings | 1 | 1 | 0% | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Kansas City, MO: tornado warnings | 3 | 2 | 33% | 4 | 75% | 4 min |
| NWS Kansas City, MO: severe thunderstorm warnings | 111 | 50 | 55% | 137 | 66% | 15 min |
| NWS Kansas City, MO: flash flood warnings | 8 | 6 | 25% | 8 | 88% | 41 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 11, 11:31 AM CST | Winter Weather Advisory | EAX | 29 hr |
| Jan 22, 9:04 PM CST | Special Weather Statement | EAX | 41 min |
| Jan 22, 9:51 PM CST | Special Weather Statement | EAX | 24 min |
| Jan 26, 3:20 AM CST | Dense Fog Advisory | EAX | 7 hr |
| Jan 29, 2:20 PM CST | Fire Weather Watch | EAX | 13 hr |
| Jan 30, 3:27 AM CST | Red Flag Warning | EAX | 15 hr |
| Feb 5, 9:52 PM CST | Freezing Fog Advisory | EAX | 12 hr |
| Feb 12, 4:08 AM CST | Winter Weather Advisory | EAX | 38 hr |
| Feb 13, 9:05 PM CST | Special Weather Statement | EAX | 9 hr |
| Feb 20, 8:02 PM CST | Special Weather Statement | EAX | 43 min |
| Feb 23, 3:37 AM CST | Wind Advisory | EAX | 18 hr |
| Feb 28, 10:07 PM CST | Severe Thunderstorm Watch | SPC | 3 hr |
| Mar 2, 2:07 AM CST | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 4, 3:41 AM CST | Wind Advisory | EAX | 14 hr |
| Mar 5, 2:46 PM CST | Wind Advisory | EAX | 28 hr |
| Mar 6, 4:43 AM CST | Red Flag Warning | EAX | 14 hr |
| Mar 7, 12:19 AM CST | Wind Advisory | EAX | 15 hr |
| Mar 16, 1:34 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Mar 18, 3:28 AM CDT | Flood Watch | EAX | 3 days |
| Mar 19, 5:39 PM CDT | Special Weather Statement | EAX | 36 min |
| Mar 20, 3:37 AM CDT | River Flood Warning | EAX | 64 hr |
| Mar 23, 1:32 PM CDT | Special Weather Statement | EAX | 88 min |
| Mar 23, 6:43 PM CDT | Mesoscale Discussion | SPC | 32 min |
| Mar 23, 7:09 PM CDT | Special Weather Statement | EAX | 36 min |
| Apr 13, 7:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Apr 15, 4:17 AM CDT | Wind Advisory | EAX | 16 hr |
| Apr 15, 1:04 PM CDT | Severe Thunderstorm Warning | EAX | 41 min |
| Apr 27, 12:22 PM CDT | Special Weather Statement | EAX | 8 min |
| Apr 27, 12:30 PM CDT | Special Weather Statement | EAX | 15 min |
| Apr 29, 10:41 PM CDT | Areal Flood Advisory | EAX | 3 hr |
| Apr 29, 10:50 PM CDT | Special Weather Statement | EAX | 25 min |
| Apr 29, 11:36 PM CDT | Flash Flood Warning | EAX | 6 hr |
| Apr 30, 5:35 AM CDT | Areal Flood Warning | EAX | 10 hr |
| Apr 30, 7:05 AM CDT | River Flood Warning | EAX | 8 hr |
| May 1, 12:56 PM CDT | River Flood Warning | EAX | 7 hr |
| May 6, 1:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 6, 1:42 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 6, 3:49 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 6, 3:56 PM CDT | Mesoscale Discussion | SPC | 64 min |
| May 6, 7:14 PM CDT | Special Weather Statement | EAX | 46 min |
| May 6, 7:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 6, 8:21 PM CDT | Special Weather Statement | EAX | 24 min |
| May 25, 10:32 AM CDT | Special Weather Statement | EAX | 43 min |
| May 25, 11:02 AM CDT | Severe Thunderstorm Warning | EAX | 28 min |
| May 28, 8:55 PM CDT | Areal Flood Advisory | EAX | 4 hr |
| May 28, 9:01 PM CDT | Severe Thunderstorm Warning | EAX | 29 min |
| May 28, 9:28 PM CDT | Severe Thunderstorm Warning | EAX | 32 min |
| May 28, 9:58 PM CDT | Special Weather Statement | EAX | 47 min |
| Jun 16, 11:40 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Jun 16, 5:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 26, 4:03 PM CDT | Excessive Heat Warning | EAX | 4 days |
| Jun 26, 4:03 PM CDT | Heat Advisory | EAX | 12 hr |
| Jul 2, 3:36 PM CDT | Heat Advisory | EAX | 5 days |
| Jul 7, 2:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 8, 3:23 AM CDT | Heat Advisory | EAX | 16 hr |
| Jul 17, 3:35 PM CDT | Excessive Heat Warning | EAX | 8 days |
| Jul 17, 3:35 PM CDT | Heat Advisory | EAX | 3 days |
| Jul 25, 5:04 AM CDT | Red Flag Warning | EAX | 14 hr |
| Jul 27, 3:24 PM CDT | Heat Advisory | EAX | 52 hr |
| Aug 1, 3:41 AM CDT | Heat Advisory | EAX | 15 hr |
| Aug 2, 3:34 PM CDT | Heat Advisory | EAX | 27 hr |
| Aug 3, 3:19 PM CDT | Heat Advisory | EAX | 29 hr |
| Aug 8, 8:54 PM CDT | Special Weather Statement | EAX | 36 min |
| Aug 8, 9:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 12, 3:39 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 22, 3:34 PM CDT | Red Flag Warning | EAX | 27 hr |
| Sep 7, 1:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Sep 7, 2:35 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Oct 4, 10:54 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 4, 11:25 PM CDT | Special Weather Statement | EAX | 35 min |
| Oct 6, 3:32 AM CDT | Freeze Warning | EAX | 28 hr |
| Oct 17, 3:30 PM CDT | Wind Advisory | EAX | 28 hr |
| Oct 23, 1:12 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 26, 3:38 AM CDT | Freeze Warning | EAX | 28 hr |
| Nov 11, 5:49 AM CST | Mesoscale Discussion | SPC | 86 min |
| Nov 20, 6:19 PM CST | Dense Fog Advisory | EAX | 15 hr |
| Dec 9, 7:13 AM CST | Dense Fog Advisory | EAX | 3 hr |
| Dec 16, 4:12 AM CST | Dense Fog Advisory | EAX | 10 hr |
| Dec 16, 8:27 PM CST | Dense Fog Advisory | EAX | 10 hr |
| Dec 18, 3:18 PM CST | Winter Weather Advisory | EAX | 48 hr |
| Dec 30, 12:01 PM CST | Winter Weather Advisory | EAX | 42 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 | 4 |
| Severe Thunderstorm Watch | 5 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 16 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 1 |
| River Flood Warning | 3 |
| Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Weather Advisory | 4 |
| Heat | |
| Excessive Heat Warning | 2 |
| Heat Advisory | 8 |
| Cold | |
| Freeze Warning | 2 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 4 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
| 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.