Alert archive / Missouri / Pettis County
Weather alerts in Pettis County, Missouri, 2020
135 weather alerts in 2020, 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 2020. Tap one for its archive.
- Alerts
- 135
- Warnings
- 56
- Watches
- 17
- Advisories
- 26
- Busiest month
- March20 alerts
- Busiest day
- March 27, 20209 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, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 24 | 12 | 50% | 3 | 67% | 21 min |
| Flash flood warnings | 1 | 1 | 0% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Kansas City, MO: tornado warnings | 7 | 2 | 71% | 9 | 33% | 17 min |
| NWS Kansas City, MO: severe thunderstorm warnings | 182 | 82 | 55% | 192 | 91% | 21 min |
| NWS Kansas City, MO: flash flood warnings | 27 | 13 | 52% | 23 | 83% | 154 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, 2:31 PM CST | Flash Flood Watch | EAX | 61 hr |
| Jan 9, 3:27 PM CST | Winter Storm Watch | EAX | 12 hr |
| Jan 10, 3:29 AM CST | Winter Storm Warning | EAX | 38 hr |
| Jan 10, 9:23 AM CST | River Flood Warning | EAX | 62 hr |
| Jan 15, 2:51 PM CST | Winter Storm Watch | EAX | 13 hr |
| Jan 16, 3:51 AM CST | Winter Weather Advisory | EAX | 50 hr |
| Jan 17, 3:20 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 17, 9:45 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 18, 10:52 AM CST | River Flood Warning | EAX | 32 hr |
| Jan 21, 3:54 PM CST | Winter Weather Advisory | EAX | 32 hr |
| Jan 23, 3:19 AM CST | Winter Weather Advisory | EAX | 36 hr |
| Jan 26, 2:36 PM CST | Dense Fog Advisory | EAX | 19 hr |
| Jan 27, 10:18 PM CST | Dense Fog Advisory | EAX | 11 hr |
| Jan 28, 2:56 AM CST | Winter Weather Advisory | EAX | 33 hr |
| Feb 3, 3:57 PM CST | Winter Weather Advisory | EAX | 55 hr |
| Feb 11, 3:15 PM CST | Winter Weather Advisory | EAX | 33 hr |
| Feb 25, 3:28 AM CST | Winter Weather Advisory | EAX | 18 hr |
| Mar 5, 2:17 AM CST | Red Flag Warning | EAX | 16 hr |
| Mar 7, 2:40 AM CST | Red Flag Warning | EAX | 15 hr |
| Mar 8, 3:27 AM CDT | Red Flag Warning | EAX | 16 hr |
| Mar 9, 3:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 9, 10:26 PM CDT | River Flood Warning | EAX | 14 hr |
| Mar 12, 9:21 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Mar 18, 10:45 AM CDT | River Flood Warning | EAX | 65 hr |
| Mar 23, 3:10 AM CDT | Dense Fog Advisory | EAX | 7 hr |
| Mar 23, 10:39 AM CDT | River Flood Warning | EAX | 70 hr |
| Mar 26, 9:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Mar 26, 10:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 26, 11:36 PM CDT | Severe Thunderstorm Warning | EAX | 24 min |
| Mar 26, 11:57 PM CDT | Severe Thunderstorm Warning | EAX | 33 min |
| Mar 27, 12:21 AM CDT | Severe Thunderstorm Warning | EAX | 39 min |
| Mar 27, 1:20 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Mar 27, 2:22 AM CDT | Severe Thunderstorm Warning | EAX | 38 min |
| Mar 27, 2:52 AM CDT | Severe Thunderstorm Warning | EAX | 31 min |
| Mar 27, 6:27 AM CDT | River Flood Warning | EAX | 48 hr |
| Mar 27, 8:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Mar 28, 7:05 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 3, 3:11 PM CDT | Freeze Warning | EAX | 18 hr |
| Apr 9, 2:39 AM CDT | Freeze Warning | EAX | 30 hr |
| Apr 12, 4:09 AM CDT | Freeze Warning | EAX | 30 hr |
| Apr 12, 4:09 AM CDT | Wind Advisory | EAX | 24 hr |
| Apr 13, 3:56 AM CDT | Freeze Warning | EAX | 30 hr |
| Apr 17, 3:29 PM CDT | Freeze Warning | EAX | 18 hr |
| Apr 24, 8:50 PM CDT | River Flood Warning | EAX | 28 hr |
| Apr 28, 3:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 28, 3:40 PM CDT | Severe Thunderstorm Warning | EAX | 35 min |
| Apr 28, 3:51 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 28, 4:16 PM CDT | Special Weather Statement | EAX | 44 min |
| Apr 29, 2:07 AM CDT | River Flood Warning | EAX | 31 hr |
| May 4, 6:33 AM CDT | Severe Thunderstorm Watch | SPC | 12 hr |
| May 4, 10:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| May 4, 12:08 PM CDT | Severe Thunderstorm Warning | EAX | 37 min |
| May 4, 12:41 PM CDT | Severe Thunderstorm Warning | EAX | 49 min |
| May 4, 1:04 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 8, 3:06 AM CDT | Frost Advisory | EAX | 29 hr |
| May 10, 2:49 PM CDT | Frost Advisory | EAX | 16 hr |
| May 14, 3:20 AM CDT | Flash Flood Watch | EAX | 25 hr |
| May 14, 10:25 AM CDT | River Flood Warning | EAX | 61 hr |
| May 14, 1:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 10:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 11:17 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 15, 12:45 AM CDT | Severe Thunderstorm Warning | EAX | 30 min |
| May 15, 1:00 AM CDT | Severe Thunderstorm Warning | EAX | 30 min |
| May 15, 1:06 AM CDT | Mesoscale Discussion | SPC | 114 min |
| May 15, 1:18 AM CDT | Severe Thunderstorm Warning | EAX | 27 min |
| May 25, 2:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| May 28, 1:33 PM CDT | Areal Flood Warning | EAX | 6 hr |
| May 28, 7:17 PM CDT | Areal Flood Warning | EAX | 6 hr |
| May 28, 7:36 PM CDT | River Flood Warning | EAX | 45 hr |
| Jun 3, 1:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 3, 3:52 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 3, 6:40 PM CDT | Severe Thunderstorm Warning | EAX | 35 min |
| Jun 3, 7:10 PM CDT | Special Weather Statement | EAX | 35 min |
| Jun 4, 12:03 AM CDT | Special Weather Statement | EAX | 42 min |
| Jun 4, 3:04 AM CDT | Severe Thunderstorm Warning | EAX | 4 min |
| Jun 4, 3:06 AM CDT | Severe Thunderstorm Warning | EAX | 39 min |
| Jun 4, 3:40 AM CDT | Special Weather Statement | EAX | 50 min |
| Jun 4, 7:38 AM CDT | River Flood Warning | EAX | 45 hr |
| Jun 4, 11:32 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 5, 3:31 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Jun 5, 4:54 AM CDT | Severe Thunderstorm Warning | EAX | 36 min |
| Jun 7, 2:42 PM CDT | Flash Flood Watch | EAX | 56 hr |
| Jun 19, 2:28 PM CDT | Special Weather Statement | EAX | 47 min |
| Jun 22, 5:42 PM CDT | Special Weather Statement | EAX | 33 min |
| Jul 1, 5:40 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Jul 1, 6:14 AM CDT | Severe Thunderstorm Warning | EAX | 61 min |
| Jul 9, 1:09 AM CDT | Severe Thunderstorm Watch | SPC | 11 hr |
| Jul 16, 2:48 PM CDT | Heat Advisory | EAX | 3 days |
| Jul 19, 3:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 6:38 PM CDT | Areal Flood Advisory | EAX | 3 hr |
| Jul 21, 3:51 PM CDT | Special Weather Statement | EAX | 39 min |
| Jul 21, 4:17 PM CDT | Severe Thunderstorm Warning | EAX | 28 min |
| Jul 26, 3:53 AM CDT | Heat Advisory | EAX | 15 hr |
| Jul 27, 4:21 PM CDT | River Flood Warning | EAX | 12 hr |
| Jul 30, 2:44 PM CDT | River Flood Warning | EAX | 54 hr |
| Jul 30, 8:24 PM CDT | Areal Flood Warning | EAX | 3 hr |
| Jul 30, 8:37 PM CDT | Flash Flood Warning | EAX | 8 hr |
| Jul 30, 11:34 PM CDT | River Flood Warning | EAX | 3 days |
| Jul 31, 4:18 AM CDT | Areal Flood Warning | EAX | 3 days |
| Aug 10, 2:10 PM CDT | Severe Thunderstorm Warning | EAX | 65 min |
| Aug 10, 2:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 2:39 PM CDT | Severe Thunderstorm Warning | EAX | 66 min |
| Aug 10, 2:58 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 10, 3:20 PM CDT | Severe Thunderstorm Warning | EAX | 52 min |
| Aug 10, 10:37 PM CDT | River Flood Warning | EAX | 8 hr |
| Aug 11, 5:49 PM CDT | Special Weather Statement | EAX | 26 min |
| Aug 11, 6:25 PM CDT | Special Weather Statement | EAX | 35 min |
| Aug 11, 6:33 PM CDT | Special Weather Statement | EAX | 27 min |
| Aug 30, 2:12 AM CDT | Dense Fog Advisory | EAX | 7 hr |
| Aug 31, 8:41 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 31, 8:44 AM CDT | Severe Thunderstorm Warning | EAX | 46 min |
| Sep 3, 2:23 AM CDT | Dense Fog Advisory | EAX | 7 hr |
| Sep 27, 10:53 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Sep 27, 1:29 PM CDT | Special Weather Statement | EAX | 46 min |
| Sep 27, 1:47 PM CDT | Severe Thunderstorm Warning | EAX | 28 min |
| Oct 13, 2:48 PM CDT | Fire Weather Watch | EAX | 13 hr |
| Oct 14, 3:59 AM CDT | Red Flag Warning | EAX | 14 hr |
| Oct 15, 2:42 PM CDT | Frost Advisory | EAX | 17 hr |
| Oct 16, 3:16 AM CDT | Fire Weather Watch | EAX | 11 hr |
| Oct 16, 2:07 PM CDT | Wind Advisory | EAX | 25 hr |
| Oct 16, 2:16 PM CDT | Red Flag Warning | EAX | 29 hr |
| Oct 21, 9:15 PM CDT | Dense Fog Advisory | EAX | 14 hr |
| Oct 23, 3:37 AM CDT | Freeze Warning | EAX | 30 hr |
| Oct 25, 3:02 PM CDT | Winter Weather Advisory | EAX | 40 hr |
| Nov 10, 8:52 AM CST | Mesoscale Discussion | SPC | 113 min |
| Nov 10, 10:37 AM CST | Special Weather Statement | EAX | 23 min |
| Nov 14, 3:33 AM CST | Wind Advisory | EAX | 35 hr |
| Nov 14, 4:46 PM CST | Mesoscale Discussion | SPC | 29 min |
| Nov 14, 5:14 PM CST | Tornado Watch | SPC | 8 hr |
| Nov 14, 6:12 PM CST | Severe Thunderstorm Warning | EAX | 48 min |
| Nov 14, 7:11 PM CST | Severe Thunderstorm Warning | EAX | 49 min |
| Nov 14, 7:34 PM CST | Mesoscale Discussion | SPC | 86 min |
| Nov 18, 2:34 PM CST | Wind Advisory | EAX | 25 hr |
| Dec 7, 8:39 PM CST | Dense Fog Advisory | EAX | 15 hr |
| Dec 22, 2:03 PM CST | Wind Advisory | EAX | 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 | 24 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 24 |
| Special Weather Statement | 12 |
| Flooding | |
| Areal Flood Warning | 4 |
| Flash Flood Warning | 1 |
| River Flood Warning | 15 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 8 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 6 |
| Frost Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 5 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.