Alert archive / Missouri / Pettis County
Weather alerts in Pettis County, Missouri, 2009
159 weather alerts in 2009, 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 2009. Tap one for its archive.
- Alerts
- 159
- Warnings
- 50
- Watches
- 30
- Advisories
- 31
- Busiest month
- June45 alerts
- Busiest day
- June 16, 200911 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, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 17 | 8 | 53% | 5 | 80% | 15 min |
| Flash flood warnings | 5 | 4 | 20% | 2 | 100% | 74 min |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Kansas City, MO: tornado warnings | 29 | 10 | 66% | 24 | 83% | 14 min |
| NWS Kansas City, MO: severe thunderstorm warnings | 251 | 122 | 51% | 309 | 70% | 17 min |
| NWS Kansas City, MO: flash flood warnings | 53 | 32 | 40% | 104 | 83% | 156 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 14, 4:28 AM CST | Wind Chill Advisory | EAX | 32 hr |
| Jan 26, 3:52 AM CST | Winter Weather Advisory | EAX | 38 hr |
| Feb 5, 3:20 AM CST | Red Flag Warning | EAX | 14 hr |
| Feb 9, 8:43 AM CST | Mesoscale Discussion | SPC | 32 min |
| Feb 9, 10:28 AM CST | Mesoscale Discussion | SPC | 62 min |
| Feb 9, 3:12 PM CST | Flash Flood Watch | EAX | 13 hr |
| Feb 11, 5:02 PM CST | River Flood Warning | EAX | 13 hr |
| Feb 26, 6:57 AM CST | Mesoscale Discussion | SPC | 93 min |
| Feb 26, 12:51 PM CST | Mesoscale Discussion | SPC | 114 min |
| Feb 26, 4:54 PM CST | Severe Thunderstorm Warning | EAX | 36 min |
| Feb 27, 3:04 PM CST | Winter Weather Advisory | EAX | 25 hr |
| Mar 7, 7:33 PM CST | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 7, 10:26 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 8, 12:43 AM CST | Mesoscale Discussion | SPC | 92 min |
| Mar 8, 5:56 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Mar 8, 6:32 AM CDT | Tornado Watch | SPC | 7 hr |
| Mar 8, 7:23 AM CDT | Severe Thunderstorm Warning | EAX | 37 min |
| Mar 9, 3:34 AM CDT | Flash Flood Watch | EAX | 27 hr |
| Mar 9, 1:57 PM CDT | River Flood Warning | EAX | 54 hr |
| Mar 22, 3:47 PM CDT | Wind Advisory | EAX | 31 hr |
| Mar 23, 4:01 PM CDT | Flash Flood Watch | EAX | 21 hr |
| Mar 26, 11:22 AM CDT | Winter Storm Watch | EAX | 18 hr |
| Mar 27, 5:02 AM CDT | Winter Storm Warning | EAX | 42 hr |
| Mar 27, 5:02 AM CDT | Winter Weather Advisory | EAX | 44 hr |
| Mar 28, 2:43 PM CDT | River Flood Warning | EAX | 43 hr |
| Mar 28, 3:13 PM CDT | Freeze Warning | EAX | 18 hr |
| Mar 31, 3:00 PM CDT | Frost Advisory | EAX | 13 hr |
| Apr 2, 2:58 PM CDT | Frost Advisory | EAX | 18 hr |
| Apr 4, 6:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 5, 3:52 AM CDT | Freeze Warning | EAX | 29 hr |
| Apr 6, 3:35 AM CDT | Freeze Warning | EAX | 29 hr |
| Apr 10, 3:43 AM CDT | Frost Advisory | EAX | 28 hr |
| Apr 10, 6:28 PM CDT | River Flood Warning | EAX | 4 hr |
| Apr 14, 3:20 AM CDT | Frost Advisory | EAX | 24 hr |
| Apr 19, 2:40 PM CDT | River Flood Warning | EAX | 15 hr |
| Apr 25, 4:04 PM CDT | Flood Watch | EAX | 43 hr |
| Apr 26, 11:15 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Apr 27, 8:22 AM CDT | River Flood Warning | EAX | 4 days |
| Apr 27, 2:26 PM CDT | Areal Flood Advisory | EAX | 3 hr |
| Apr 27, 3:28 PM CDT | Flash Flood Warning | EAX | 4 hr |
| Apr 27, 4:58 PM CDT | Flash Flood Warning | EAX | 3 hr |
| Apr 27, 7:29 PM CDT | Areal Flood Warning | EAX | 24 hr |
| Apr 29, 4:17 AM CDT | Flash Flood Watch | EAX | 24 hr |
| Apr 29, 4:34 PM CDT | Severe Thunderstorm Warning | EAX | 41 min |
| Apr 29, 5:45 PM CDT | Special Weather Statement | EAX | 30 min |
| Apr 29, 5:52 PM CDT | Areal Flood Advisory | EAX | 6 hr |
| Apr 29, 11:45 PM CDT | Areal Flood Advisory | EAX | 9 hr |
| Apr 30, 8:24 AM CDT | Flash Flood Watch | EAX | 8 hr |
| May 7, 1:44 PM CDT | Tornado Watch | SPC | 6 hr |
| May 7, 7:37 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 7, 9:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 7, 10:23 PM CDT | Severe Thunderstorm Warning | EAX | 37 min |
| May 7, 10:43 PM CDT | Severe Thunderstorm Warning | EAX | 6 min |
| May 13, 1:52 PM CDT | Mesoscale Discussion | SPC | 23 min |
| May 13, 4:51 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 13, 6:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| May 13, 7:39 PM CDT | Severe Thunderstorm Warning | EAX | 36 min |
| May 13, 8:16 PM CDT | Severe Thunderstorm Warning | EAX | 44 min |
| May 13, 8:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 13, 8:46 PM CDT | Severe Thunderstorm Warning | EAX | 14 min |
| May 14, 3:22 PM CDT | Flash Flood Watch | EAX | 31 hr |
| May 15, 2:03 AM CDT | Mesoscale Discussion | SPC | 87 min |
| May 15, 7:42 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 15, 12:50 PM CDT | Tornado Watch | SPC | 7 hr |
| May 15, 3:43 PM CDT | Mesoscale Discussion | SPC | 62 min |
| May 15, 4:46 PM CDT | Severe Thunderstorm Warning | EAX | 29 min |
| May 15, 5:08 PM CDT | Severe Thunderstorm Warning | EAX | 37 min |
| May 15, 5:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| May 15, 5:54 PM CDT | Special Weather Statement | EAX | 36 min |
| May 15, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 15, 6:59 PM CDT | Areal Flood Advisory | EAX | 3 hr |
| May 15, 8:24 PM CDT | Flash Flood Warning | EAX | 4 hr |
| May 15, 11:59 PM CDT | Areal Flood Warning | EAX | 19 hr |
| May 16, 2:40 AM CDT | River Flood Warning | EAX | 11 hr |
| May 25, 9:51 PM CDT | Areal Flood Advisory | EAX | 6 hr |
| May 26, 12:41 AM CDT | Areal Flood Advisory | EAX | 3 hr |
| Jun 2, 3:48 AM CDT | Flash Flood Watch | EAX | 14 hr |
| Jun 2, 2:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 7, 12:18 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Jun 7, 5:31 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 7, 5:44 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 7, 11:09 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 8, 3:25 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 9, 3:56 AM CDT | Flash Flood Watch | EAX | 24 hr |
| Jun 9, 11:11 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 9, 2:17 PM CDT | Special Weather Statement | EAX | 28 min |
| Jun 9, 2:40 PM CDT | Severe Thunderstorm Warning | EAX | 35 min |
| Jun 9, 9:42 PM CDT | River Flood Warning | EAX | 24 hr |
| Jun 9, 11:34 PM CDT | Special Weather Statement | EAX | 26 min |
| Jun 10, 12:00 AM CDT | Severe Thunderstorm Warning | EAX | 30 min |
| Jun 10, 4:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 10, 5:15 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 10, 7:54 PM CDT | Areal Flood Advisory | EAX | 5 hr |
| Jun 15, 3:55 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 15, 6:24 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 15, 8:57 AM CDT | Areal Flood Advisory | EAX | 6 hr |
| Jun 15, 10:34 AM CDT | River Flood Warning | EAX | 67 hr |
| Jun 15, 3:04 PM CDT | Flash Flood Watch | EAX | 18 hr |
| Jun 15, 7:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 15, 8:14 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 15, 11:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 15, 11:29 PM CDT | Flash Flood Warning | EAX | 6 hr |
| Jun 15, 11:33 PM CDT | Areal Flood Advisory | EAX | 12 hr |
| Jun 15, 11:43 PM CDT | Severe Thunderstorm Warning | EAX | 32 min |
| Jun 16, 12:17 AM CDT | Severe Thunderstorm Warning | EAX | 43 min |
| Jun 16, 2:30 AM CDT | Mesoscale Discussion | SPC | 60 min |
| Jun 16, 5:31 AM CDT | Areal Flood Advisory | EAX | 12 min |
| Jun 16, 5:42 AM CDT | Areal Flood Warning | EAX | 12 hr |
| Jun 16, 5:03 PM CDT | Areal Flood Warning | EAX | 24 hr |
| Jun 17, 3:09 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 17, 6:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 17, 7:13 PM CDT | Severe Thunderstorm Warning | EAX | 32 min |
| Jun 21, 3:43 PM CDT | Heat Advisory | EAX | 47 hr |
| Jun 22, 1:37 PM CDT | Excessive Heat Warning | EAX | 5 days |
| Jun 23, 9:59 PM CDT | Special Weather Statement | EAX | 31 min |
| Jun 25, 3:39 AM CDT | Heat Advisory | EAX | 63 hr |
| Jun 27, 5:43 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jun 27, 5:54 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 27, 7:39 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 7:44 PM CDT | Severe Thunderstorm Warning | EAX | 31 min |
| Jun 27, 8:12 PM CDT | Special Weather Statement | EAX | 33 min |
| Jul 10, 5:38 AM CDT | Severe Thunderstorm Warning | EAX | 37 min |
| Jul 10, 6:45 AM CDT | Special Weather Statement | EAX | 30 min |
| Jul 10, 7:46 AM CDT | Special Weather Statement | EAX | 29 min |
| Jul 11, 4:48 PM CDT | Special Weather Statement | EAX | 27 min |
| Jul 11, 6:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 12, 7:58 AM CDT | Mesoscale Discussion | SPC | 62 min |
| Jul 12, 9:29 AM CDT | Special Weather Statement | EAX | 61 min |
| Jul 16, 1:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 16, 2:49 PM CDT | Special Weather Statement | EAX | 26 min |
| Jul 25, 2:17 AM CDT | Mesoscale Discussion | SPC | 88 min |
| Aug 4, 8:02 AM CDT | Special Weather Statement | EAX | 43 min |
| Aug 10, 1:50 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Aug 17, 9:44 AM CDT | Areal Flood Advisory | EAX | 67 hr |
| Aug 18, 2:38 PM CDT | Flash Flood Watch | EAX | 36 hr |
| Aug 29, 3:03 AM CDT | Dense Fog Advisory | EAX | 6 hr |
| Sep 5, 10:04 PM CDT | Dense Fog Advisory | EAX | 12 hr |
| Sep 6, 9:14 PM CDT | Dense Fog Advisory | EAX | 13 hr |
| Sep 21, 4:13 AM CDT | Dense Fog Advisory | EAX | 5 hr |
| Oct 1, 3:44 PM CDT | Special Weather Statement | EAX | 31 min |
| Oct 7, 4:09 AM CDT | Flood Watch | EAX | 40 hr |
| Oct 8, 5:51 AM CDT | Areal Flood Advisory | EAX | 84 min |
| Oct 8, 7:03 AM CDT | Flash Flood Warning | EAX | 6 hr |
| Oct 8, 9:24 AM CDT | River Flood Warning | EAX | 51 hr |
| Oct 8, 1:07 PM CDT | Areal Flood Warning | EAX | 24 hr |
| Oct 9, 3:58 PM CDT | Frost Advisory | EAX | 17 hr |
| Oct 10, 4:01 AM CDT | Freeze Warning | EAX | 24 hr |
| Oct 17, 3:37 AM CDT | Frost Advisory | EAX | 29 hr |
| Oct 17, 3:25 PM CDT | Freeze Warning | EAX | 18 hr |
| Oct 22, 6:08 PM CDT | River Flood Warning | EAX | 19 hr |
| Oct 26, 5:41 AM CDT | River Flood Warning | EAX | 11 hr |
| Oct 29, 10:38 AM CDT | Flash Flood Watch | EAX | 16 hr |
| Oct 29, 2:35 PM CDT | River Flood Warning | EAX | 33 hr |
| Dec 9, 5:48 AM CST | Wind Advisory | EAX | 6 hr |
| Dec 23, 3:37 AM CST | Winter Storm Watch | EAX | 25 hr |
| Dec 23, 2:00 PM CST | River Flood Warning | EAX | 52 hr |
| Dec 23, 3:58 PM CST | Winter Storm Warning | EAX | 42 hr |
| Dec 24, 8:18 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 25, 9:42 AM CST | Winter Weather Advisory | EAX | 18 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 | 17 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 35 |
| Special Weather Statement | 13 |
| Flooding | |
| Areal Flood Warning | 5 |
| Flash Flood Warning | 5 |
| River Flood Warning | 14 |
| Flash Flood Watch | 11 |
| Flood Watch | 2 |
| Areal Flood Advisory | 12 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 4 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 5 |
| Frost Advisory | 6 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 1 |
| 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 archive20082010
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.