Alert archive / Missouri / Worth County
Weather alerts in Worth County, Missouri, 2011
122 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Worth County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 122
- Warnings
- 24
- Watches
- 26
- Advisories
- 26
- Busiest month
- June35 alerts
- Busiest day
- May 25, 20115 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Worth County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 10 | 9 | 10% | 2 | 100% | 12 min |
| Flash flood warnings | 1 | 0 | 100% | 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 7, 8:10 AM CST | Wind Advisory | EAX | 11 hr |
| 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, 3:34 PM CST | Winter Weather Advisory | EAX | 42 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 |
| Feb 1, 6:03 AM CST | Winter Storm Warning | EAX | 22 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 8, 3:53 PM CST | Wind Chill Advisory | EAX | 11 hr |
| Feb 9, 3:47 PM CST | Wind Chill Advisory | EAX | 19 hr |
| Feb 15, 10:07 PM CST | Dense Fog Advisory | EAX | 16 hr |
| Feb 23, 3:37 PM CST | Winter Weather Advisory | EAX | 32 hr |
| Feb 24, 11:13 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 24, 8:02 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Mar 20, 3:59 AM CDT | Special Weather Statement | EAX | 31 min |
| Mar 20, 4:26 AM CDT | Special Weather Statement | EAX | 19 min |
| Mar 20, 2:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Mar 22, 1:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Mar 22, 2:03 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 22, 8:00 PM CDT | Special Weather Statement | EAX | 45 min |
| Mar 22, 8:09 PM CDT | Severe Thunderstorm Warning | EAX | 51 min |
| Apr 3, 6:21 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 4, 4:08 AM CDT | Wind Advisory | EAX | 11 hr |
| Apr 5, 3:54 AM CDT | Red Flag Warning | EAX | 15 hr |
| Apr 10, 3:35 AM CDT | Wind Advisory | EAX | 15 hr |
| Apr 10, 3:42 AM CDT | Red Flag Warning | EAX | 15 hr |
| Apr 19, 3:11 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 19, 5:52 AM CDT | Mesoscale Discussion | SPC | 83 min |
| May 2, 2:52 PM CDT | Frost Advisory | EAX | 17 hr |
| May 11, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 11, 4:53 PM CDT | Special Weather Statement | EAX | 37 min |
| May 21, 5:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 21, 5:34 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 21, 7:18 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 21, 7:50 PM CDT | Special Weather Statement | EAX | 40 min |
| May 21, 8:19 PM CDT | Severe Thunderstorm Warning | EAX | 26 min |
| May 24, 10:01 PM CDT | Flash Flood Watch | EAX | 19 hr |
| May 24, 11:36 PM CDT | Special Weather Statement | EAX | 39 min |
| May 25, 2:14 AM CDT | Areal Flood Advisory | EAX | 5 hr |
| May 25, 4:09 PM CDT | Areal Flood Advisory | EAX | 6 hr |
| May 25, 5:26 PM CDT | Flash Flood Warning | EAX | 5 hr |
| May 29, 1:41 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 29, 6:47 AM CDT | Severe Thunderstorm Warning | EAX | 28 min |
| May 29, 3:08 PM CDT | Wind Advisory | EAX | 28 hr |
| May 31, 2:38 AM CDT | Special Weather Statement | EAX | 22 min |
| Jun 5, 2:52 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 8, 3:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 8, 6:31 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 9, 1:44 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 9:50 AM CDT | Mesoscale Discussion | SPC | 55 min |
| Jun 9, 3:05 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 9, 7:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 9, 9:48 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 9, 10:02 PM CDT | Special Weather Statement | EAX | 43 min |
| Jun 9, 11:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| 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, 9:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 13, 11:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 14, 2:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 14, 3:53 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 14, 7:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 17, 6:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 19, 6:51 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 19, 9:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 19, 10:49 PM CDT | Special Weather Statement | EAX | 26 min |
| Jun 20, 3:06 PM CDT | Flash Flood Watch | EAX | 9 hr |
| Jun 20, 7:46 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 20, 8:32 PM CDT | Tornado Watch | SPC | 4 hr |
| Jun 20, 10:03 PM CDT | Special Weather Statement | EAX | 42 min |
| Jun 20, 10:49 PM CDT | Special Weather Statement | EAX | 41 min |
| Jun 26, 2:55 PM CDT | Flash Flood Watch | EAX | 16 hr |
| Jun 26, 6:55 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 26, 8:14 PM CDT | Severe Thunderstorm Warning | EAX | 16 min |
| Jun 26, 10:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 26, 10:32 PM CDT | Severe Thunderstorm Warning | EAX | 28 min |
| Jun 26, 10:54 PM CDT | Severe Thunderstorm Warning | EAX | 36 min |
| Jun 26, 11:44 PM CDT | Areal Flood Advisory | EAX | 6 hr |
| 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 8, 3:49 PM CDT | Heat Advisory | EAX | 60 hr |
| Jul 9, 9:23 PM CDT | Excessive Heat Warning | EAX | 69 hr |
| Jul 12, 3:58 AM CDT | Heat Advisory | EAX | 15 hr |
| 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 23, 4:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 23, 5:16 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 24, 3:31 PM CDT | Excessive Heat Watch | EAX | 24 hr |
| Jul 25, 3:35 PM CDT | Heat Advisory | EAX | 3 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 |
| Jul 30, 3:46 PM CDT | Heat Advisory | EAX | 45 hr |
| Aug 6, 5:32 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 6, 8:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 9:50 PM CDT | Severe Thunderstorm Warning | EAX | 40 min |
| Aug 6, 10:25 PM CDT | Special Weather Statement | EAX | 65 min |
| Aug 6, 11:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 7, 2:28 AM CDT | Special Weather Statement | EAX | 47 min |
| Aug 18, 2:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 18, 6:00 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Aug 18, 6:38 PM CDT | Tornado Watch | SPC | 5 hr |
| Aug 18, 6:58 PM CDT | Severe Thunderstorm Warning | EAX | 32 min |
| Aug 18, 7:31 PM CDT | Special Weather Statement | EAX | 29 min |
| Aug 18, 8:29 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Aug 18, 9:07 PM CDT | Severe Thunderstorm Warning | EAX | 38 min |
| Aug 18, 9:32 PM CDT | Severe Thunderstorm Warning | EAX | 43 min |
| Aug 18, 9:52 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Aug 19, 9:35 PM CDT | Flash Flood Watch | EAX | 9 hr |
| Aug 22, 1:42 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 18, 11:26 PM CDT | Dense Fog Advisory | EAX | 9 hr |
| Oct 6, 3:48 AM CDT | Red Flag Warning | EAX | 15 hr |
| Oct 11, 2:08 AM CDT | Dense Fog Advisory | EAX | 8 hr |
| Oct 18, 3:47 AM CDT | Frost Advisory | EAX | 28 hr |
| Oct 18, 10:05 PM CDT | Freeze Warning | EAX | 10 hr |
| Oct 19, 4:15 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 |
| Dec 19, 4:40 AM CST | Winter Weather 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 | 10 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 7 |
| Mesoscale Discussion | 32 |
| Special Weather Statement | 14 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 4 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 5 |
| Heat | |
| Excessive Heat Warning | 4 |
| Excessive Heat Watch | 4 |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 2 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 5 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
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.