Alert archive / Missouri / Mercer County
Weather alerts in Mercer County, Missouri, 2022
96 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Mercer County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 96
- Warnings
- 22
- Watches
- 15
- Advisories
- 27
- Busiest month
- June23 alerts
- Busiest day
- March 5, 20227 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 2 tornado warnings covering Mercer County in 2022 had a tornado report inside them.
Mercer County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 10 | 5 | 50% | 3 | 33% | 34 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Kansas City, MO: tornado warnings | 26 | 2 | 92% | 6 | 33% | 12 min |
| NWS Kansas City, MO: severe thunderstorm warnings | 152 | 64 | 58% | 154 | 78% | 19 min |
| NWS Kansas City, MO: flash flood warnings | 9 | 0 | 100% | 1 | 0% |
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 1, 3:44 AM CST | Wind Chill Advisory | EAX | 30 hr |
| Jan 1, 10:31 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 4, 3:03 AM CST | Wind Advisory | EAX | 26 hr |
| Jan 4, 3:05 PM CST | Wind Chill Advisory | EAX | 45 hr |
| Jan 8, 2:47 AM CST | Winter Weather Advisory | EAX | 12 hr |
| Jan 13, 2:01 AM CST | Winter Storm Watch | EAX | 25 hr |
| Jan 14, 3:10 AM CST | Winter Storm Warning | EAX | 31 hr |
| Jan 19, 2:06 AM CST | Wind Chill Advisory | EAX | 33 hr |
| Feb 1, 2:36 AM CST | Winter Weather Advisory | EAX | 33 hr |
| Feb 16, 3:41 AM CST | Winter Weather Advisory | EAX | 38 hr |
| Feb 22, 5:11 AM CST | Winter Weather Advisory | EAX | 5 hr |
| Mar 5, 1:20 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 5, 2:04 PM CST | Tornado Watch | SPC | 6 hr |
| Mar 5, 3:46 PM CST | Mesoscale Discussion | SPC | 89 min |
| Mar 5, 4:56 PM CST | Severe Thunderstorm Warning | EAX | 19 min |
| Mar 5, 5:13 PM CST | Tornado Warning | EAX | 197 days |
| Mar 5, 5:33 PM CST | Mesoscale Discussion | SPC | 117 min |
| Mar 5, 5:54 PM CST | Severe Thunderstorm Warning | EAX | 36 min |
| Mar 6, 2:40 PM CST | Winter Weather Advisory | EAX | 15 hr |
| Mar 8, 2:55 PM CST | Winter Storm Watch | EAX | 12 hr |
| Mar 9, 3:00 AM CST | Winter Weather Advisory | EAX | 51 hr |
| Mar 29, 4:57 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Apr 8, 3:30 AM CDT | Freeze Warning | EAX | 29 hr |
| Apr 12, 9:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 13, 2:48 AM CDT | Freeze Warning | EAX | 30 hr |
| Apr 14, 2:25 AM CDT | Wind Advisory | EAX | 17 hr |
| Apr 17, 1:58 PM CDT | Freeze Watch | EAX | 14 hr |
| Apr 17, 1:58 PM CDT | Freeze Warning | EAX | 19 hr |
| Apr 18, 3:29 AM CDT | Freeze Warning | EAX | 30 hr |
| Apr 20, 11:21 PM CDT | Dense Fog Advisory | EAX | 135 days |
| Apr 22, 2:45 PM CDT | Wind Advisory | EAX | 28 hr |
| Apr 23, 7:03 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Apr 25, 2:51 AM CDT | Freeze Warning | EAX | 30 hr |
| Apr 29, 8:34 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 29, 11:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 9, 9:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| May 17, 4:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| May 17, 4:24 PM CDT | Special Weather Statement | EAX | 51 min |
| May 17, 4:40 PM CDT | Severe Thunderstorm Warning | EAX | 50 min |
| May 17, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 17, 5:03 PM CDT | Severe Thunderstorm Warning | EAX | 27 min |
| May 17, 6:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 6, 3:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 4:04 PM CDT | Severe Thunderstorm Warning | EAX | 26 min |
| Jun 7, 7:47 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 7, 8:35 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 7, 9:26 PM CDT | Severe Thunderstorm Warning | EAX | 49 min |
| Jun 8, 1:34 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 11, 3:22 PM CDT | Heat Advisory | EAX | 4 days |
| Jun 11, 3:37 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 11, 8:21 PM CDT | Severe Thunderstorm Warning | EAX | 39 min |
| Jun 15, 5:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 15, 6:21 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 16, 5:12 PM CDT | Special Weather Statement | EAX | 48 min |
| Jun 16, 6:10 PM CDT | Special Weather Statement | EAX | 50 min |
| Jun 16, 9:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jun 16, 10:13 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 17, 12:42 AM CDT | Special Weather Statement | EAX | 33 min |
| Jun 17, 1:21 AM CDT | Severe Thunderstorm Warning | EAX | 39 min |
| Jun 17, 3:29 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 17, 9:17 AM CDT | Special Weather Statement | EAX | 28 min |
| Jun 20, 2:34 PM CDT | Heat Advisory | EAX | 29 hr |
| Jun 21, 8:35 PM CDT | Special Weather Statement | EAX | 40 min |
| Jun 21, 8:41 PM CDT | Severe Thunderstorm Warning | EAX | 45 min |
| Jun 25, 2:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jul 3, 2:10 PM CDT | Heat Advisory | EAX | 71 hr |
| Jul 5, 9:12 PM CDT | Special Weather Statement | EAX | 48 min |
| Jul 5, 10:05 PM CDT | Special Weather Statement | EAX | 40 min |
| Jul 7, 3:36 AM CDT | Severe Thunderstorm Warning | EAX | 24 min |
| Jul 7, 4:07 AM CDT | Special Weather Statement | EAX | 53 min |
| Jul 21, 2:10 PM CDT | Heat Advisory | EAX | 3 days |
| Aug 1, 3:28 AM CDT | Heat Advisory | EAX | 60 hr |
| Aug 4, 2:10 PM CDT | Heat Advisory | EAX | 3 days |
| Aug 19, 2:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 19, 3:04 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Sep 6, 2:39 AM CDT | Dense Fog Advisory | EAX | 7 hr |
| Sep 17, 10:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Sep 18, 3:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 18, 6:11 PM CDT | Tornado Watch | SPC | 6 hr |
| Sep 18, 8:41 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 24, 2:30 AM CDT | Dense Fog Advisory | EAX | 7 hr |
| Oct 7, 3:42 AM CDT | Freeze Warning | EAX | 29 hr |
| Oct 12, 2:27 PM CDT | Red Flag Warning | EAX | 29 hr |
| Oct 13, 2:31 PM CDT | Frost Advisory | EAX | 18 hr |
| Oct 14, 2:45 PM CDT | Frost Advisory | EAX | 17 hr |
| Oct 16, 2:01 PM CDT | Freeze Warning | EAX | 20 hr |
| Oct 22, 3:27 PM CDT | Wind Advisory | EAX | 34 hr |
| Oct 23, 4:34 PM CDT | Special Weather Statement | EAX | 56 min |
| Nov 10, 11:47 AM CST | Mesoscale Discussion | SPC | 88 min |
| Nov 14, 2:51 AM CST | Winter Weather Advisory | EAX | 31 hr |
| Dec 1, 2:46 PM CST | Wind Advisory | EAX | 33 hr |
| Dec 19, 3:39 PM CST | Wind Chill Watch | EAX | 22 hr |
| Dec 19, 3:39 PM CST | Winter Storm Watch | EAX | 36 hr |
| Dec 20, 1:56 PM CST | Wind Chill Warning | EAX | 4 days |
| Dec 21, 3:42 AM CST | Winter Storm Warning | EAX | 35 hr |
| Dec 23, 2:24 AM CST | Wind Chill 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 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 22 |
| Special Weather Statement | 10 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 7 |
| Heat | |
| Heat Advisory | 6 |
| Cold | |
| Freeze Warning | 7 |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Wind Chill Watch | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 1 |
| 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 archive20212023
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.