Alert archive / Missouri / Mercer County
Weather alerts in Mercer County, Missouri, 2016
75 weather alerts in 2016, 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 2016. Tap one for its archive.
- Alerts
- 75
- Warnings
- 13
- Watches
- 12
- Advisories
- 23
- Busiest month
- July12 alerts
- Busiest day
- July 7, 20165 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Mercer County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 5 | 38% | 2 | 50% | 25 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Kansas City, MO: tornado warnings | 12 | 3 | 75% | 10 | 70% | 8 min |
| NWS Kansas City, MO: severe thunderstorm warnings | 234 | 130 | 44% | 371 | 83% | 21 min |
| NWS Kansas City, MO: flash flood warnings | 48 | 29 | 40% | 78 | 91% | 125 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 9, 3:14 PM CST | Wind Chill Advisory | EAX | 19 hr |
| Jan 16, 3:25 PM CST | Wind Chill Advisory | EAX | 42 hr |
| Jan 18, 3:29 PM CST | Winter Weather Advisory | EAX | 32 hr |
| Feb 2, 7:27 PM CST | Dense Fog Advisory | EAX | 2 hr |
| Feb 7, 2:42 PM CST | Wind Advisory | EAX | 27 hr |
| Mar 13, 10:43 PM CDT | Dense Fog Advisory | EAX | 12 hr |
| Mar 15, 3:28 AM CDT | Severe Thunderstorm Warning | EAX | 37 min |
| Mar 16, 3:40 AM CDT | Red Flag Warning | EAX | 16 hr |
| Mar 23, 1:07 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 23, 3:03 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 23, 7:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 23, 8:02 PM CDT | Severe Thunderstorm Warning | EAX | 43 min |
| Apr 8, 3:17 AM CDT | Freeze Warning | EAX | 29 hr |
| Apr 11, 3:38 AM CDT | Freeze Warning | EAX | 29 hr |
| Apr 27, 1:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 27, 2:33 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 27, 5:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Apr 27, 5:52 PM CDT | Severe Thunderstorm Warning | EAX | 38 min |
| May 11, 5:34 AM CDT | Mesoscale Discussion | SPC | 101 min |
| May 13, 12:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| May 13, 1:25 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 25, 11:08 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 26, 2:09 PM CDT | Tornado Watch | SPC | 8 hr |
| May 27, 5:41 PM CDT | Mesoscale Discussion | SPC | 64 min |
| May 27, 7:08 PM CDT | Special Weather Statement | EAX | 37 min |
| May 27, 7:13 PM CDT | Severe Thunderstorm Warning | EAX | 47 min |
| May 27, 7:28 PM CDT | Areal Flood Advisory | EAX | 3 hr |
| Jun 20, 3:07 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 20, 4:10 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 20, 6:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 20, 9:04 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jun 21, 2:47 PM CDT | Heat Advisory | EAX | 30 hr |
| Jun 30, 3:52 AM CDT | Flash Flood Watch | EAX | 3 days |
| Jun 30, 1:29 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 30, 3:55 PM CDT | Special Weather Statement | EAX | 50 min |
| Jul 4, 2:42 PM CDT | Heat Advisory | EAX | 29 hr |
| Jul 7, 1:22 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 7, 1:37 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 7, 4:26 AM CDT | Severe Thunderstorm Warning | EAX | 64 min |
| Jul 7, 4:27 AM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 7, 5:26 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 10:33 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Jul 13, 11:14 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 17, 3:42 PM CDT | Heat Advisory | EAX | 69 hr |
| Jul 18, 9:23 AM CDT | Excessive Heat Warning | EAX | 6 days |
| Jul 19, 12:28 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 2:18 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 3, 3:21 AM CDT | Dense Fog Advisory | EAX | 5 hr |
| Aug 10, 3:07 PM CDT | Heat Advisory | EAX | 29 hr |
| Aug 11, 10:12 PM CDT | Special Weather Statement | EAX | 48 min |
| Aug 11, 11:43 PM CDT | Areal Flood Advisory | EAX | 6 hr |
| Aug 24, 12:25 AM CDT | Areal Flood Advisory | EAX | 6 hr |
| Aug 24, 3:36 AM CDT | Flash Flood Watch | EAX | 24 hr |
| Aug 24, 8:02 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Aug 28, 7:14 PM CDT | Special Weather Statement | EAX | 31 min |
| Sep 7, 2:47 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 7, 6:18 PM CDT | Special Weather Statement | EAX | 27 min |
| Sep 8, 2:52 AM CDT | Areal Flood Advisory | EAX | 4 hr |
| Sep 19, 5:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Sep 19, 5:47 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Sep 19, 6:27 PM CDT | Tornado Watch | SPC | 4 hr |
| Sep 19, 6:37 PM CDT | Severe Thunderstorm Warning | EAX | 23 min |
| Sep 19, 6:55 PM CDT | Severe Thunderstorm Warning | EAX | 50 min |
| Sep 19, 7:36 PM CDT | Severe Thunderstorm Warning | EAX | 39 min |
| Oct 6, 7:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Oct 12, 3:42 AM CDT | Frost Advisory | EAX | 30 hr |
| Oct 20, 3:24 PM CDT | Frost Advisory | EAX | 17 hr |
| Nov 1, 11:46 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Nov 8, 2:53 AM CST | Frost Advisory | EAX | 30 hr |
| Nov 11, 2:50 AM CST | Freeze Warning | EAX | 30 hr |
| Nov 17, 8:41 PM CST | Wind Advisory | EAX | 23 hr |
| Dec 5, 3:59 AM CST | Dense Fog Advisory | EAX | 6 hr |
| Dec 15, 3:34 PM CST | Winter Weather Advisory | EAX | 53 hr |
| Dec 16, 3:12 PM CST | Wind Chill Advisory | EAX | 44 hr |
| Dec 24, 1:30 AM CST | Dense Fog Advisory | EAX | 10 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 | 8 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 22 |
| Special Weather Statement | 5 |
| Flooding | |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 4 |
| Winter | |
| Winter Weather Advisory | 2 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 3 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20152017
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.