Alert archive / Missouri / Boone County
Weather alerts in Boone County, Missouri, 2008
182 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Boone County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 182
- Warnings
- 59
- Watches
- 53
- Advisories
- 28
- Busiest month
- June34 alerts
- Busiest day
- July 22, 20088 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 4 tornado warnings covering Boone County in 2008 had a tornado report inside them.
Boone County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 2 | 50% | 0 | ||
| Severe thunderstorm warnings | 31 | 14 | 55% | 18 | 67% | 16 min |
| Flash flood warnings | 11 | 2 | 82% | 6 | 50% | 137 min |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS St. Louis, MO: tornado warnings | 98 | 15 | 85% | 34 | 65% | 23 min |
| NWS St. Louis, MO: severe thunderstorm warnings | 467 | 151 | 68% | 450 | 74% | 23 min |
| NWS St. Louis, MO: flash flood warnings | 100 | 35 | 65% | 145 | 77% | 155 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, 12:25 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 7, 1:52 PM CST | Tornado Watch | SPC | 146 days |
| Jan 7, 3:03 PM CST | Tornado Warning | LSX | 42 min |
| Jan 7, 3:30 PM CST | Tornado Warning | LSX | 45 min |
| Jan 7, 3:40 PM CST | Severe Thunderstorm Warning | LSX | 50 min |
| Jan 7, 4:09 PM CST | Tornado Warning | LSX | 51 min |
| Jan 7, 4:34 PM CST | Mesoscale Discussion | SPC | 86 min |
| Jan 7, 6:11 PM CST | Mesoscale Discussion | SPC | 94 min |
| Jan 7, 6:57 PM CST | Mesoscale Discussion | SPC | 93 min |
| Jan 7, 7:23 PM CST | Severe Thunderstorm Warning | LSX | 52 min |
| Jan 7, 7:48 PM CST | Tornado Watch | SPC | 9 hr |
| Jan 21, 4:12 PM CST | Winter Weather Advisory | LSX | 12 hr |
| Jan 27, 4:15 AM CST | Dense Fog Advisory | LSX | 5 hr |
| Jan 27, 2:59 PM CST | Wind Advisory | LSX | 29 hr |
| Jan 28, 8:10 PM CST | Wind Advisory | LSX | 25 hr |
| Jan 30, 4:18 AM CST | Winter Storm Watch | LSX | 24 hr |
| Jan 31, 4:21 AM CST | Snow Advisory | LSX | 24 hr |
| Feb 3, 8:50 PM CST | Dense Fog Advisory | LSX | 15 hr |
| Feb 4, 3:32 PM CST | Flash Flood Watch | LSX | 31 hr |
| Feb 4, 6:20 PM CST | Mesoscale Discussion | SPC | 85 min |
| Feb 4, 7:14 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Feb 10, 4:09 AM CST | Winter Storm Watch | LSX | 24 hr |
| Feb 11, 4:37 AM CST | Winter Weather Advisory | LSX | 18 hr |
| Feb 15, 3:10 PM CST | Flash Flood Watch | LSX | 45 hr |
| Feb 19, 3:48 PM CST | Winter Storm Watch | LSX | 30 hr |
| Feb 20, 4:31 PM CST | Winter Storm Warning | LSX | 47 hr |
| Mar 2, 4:06 AM CST | Flood Watch | LSX | 35 hr |
| Mar 2, 4:30 AM CST | Winter Storm Watch | LSX | 24 hr |
| Mar 3, 4:21 AM CST | Winter Weather Advisory | LSX | 38 hr |
| Mar 14, 3:48 AM CDT | Dense Fog Advisory | LSX | 7 hr |
| Mar 16, 3:10 PM CDT | Flood Watch | LSX | 64 hr |
| Mar 17, 2:39 PM CDT | Flash Flood Warning | LSX | 3 hr |
| Mar 26, 10:04 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Mar 26, 1:48 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 27, 4:39 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Mar 27, 5:07 PM CDT | Severe Thunderstorm Warning | LSX | 38 min |
| Mar 27, 6:25 PM CDT | Severe Thunderstorm Warning | LSX | 50 min |
| Mar 30, 4:07 PM CDT | Flash Flood Watch | LSX | 31 hr |
| Mar 31, 1:45 PM CDT | Tornado Watch | SPC | 6 hr |
| Apr 3, 9:51 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 3, 11:48 AM CDT | Severe Thunderstorm Warning | LSX | 42 min |
| Apr 3, 12:16 PM CDT | Severe Thunderstorm Warning | LSX | 44 min |
| Apr 7, 3:03 PM CDT | Flash Flood Watch | LSX | 24 hr |
| Apr 9, 4:15 AM CDT | Flash Flood Watch | LSX | 41 hr |
| Apr 10, 5:10 AM CDT | Flash Flood Warning | LSX | 6 hr |
| Apr 10, 4:49 PM CDT | Severe Thunderstorm Warning | LSX | 37 min |
| Apr 16, 3:59 AM CDT | Wind Advisory | LSX | 11 hr |
| Apr 22, 5:11 AM CDT | Severe Thunderstorm Warning | LSX | 64 min |
| Apr 23, 6:05 PM CDT | Severe Thunderstorm Warning | LSX | 55 min |
| Apr 23, 6:55 PM CDT | Severe Thunderstorm Warning | LSX | 24 min |
| Apr 24, 3:08 AM CDT | Flood Watch | LSX | 7 hr |
| Apr 25, 4:51 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 25, 12:21 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 25, 1:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 28, 3:16 AM CDT | Frost Advisory | LSX | 29 hr |
| May 1, 11:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| May 2, 5:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 3, 4:03 PM CDT | Frost Advisory | LSX | 16 hr |
| May 7, 5:12 AM CDT | Flash Flood Watch | LSX | 23 hr |
| May 10, 12:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| May 10, 3:30 PM CDT | Wind Advisory | LSX | 28 hr |
| May 10, 5:13 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 10, 7:14 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 13, 10:33 AM CDT | Severe Thunderstorm Warning | LSX | 42 min |
| May 13, 10:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 25, 12:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 25, 3:57 PM CDT | Flash Flood Watch | LSX | 71 hr |
| May 25, 3:58 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 25, 4:16 PM CDT | Severe Thunderstorm Warning | LSX | 59 min |
| May 25, 5:03 PM CDT | Flash Flood Warning | LSX | 4 hr |
| May 26, 2:42 AM CDT | Mesoscale Discussion | SPC | 93 min |
| May 30, 1:56 PM CDT | Tornado Watch | SPC | 8 hr |
| May 30, 5:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| May 30, 6:10 PM CDT | Severe Thunderstorm Warning | LSX | 50 min |
| May 30, 7:35 PM CDT | Areal Flood Advisory | LSX | 4 hr |
| May 30, 7:45 PM CDT | Severe Thunderstorm Warning | LSX | 45 min |
| May 31, 4:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| May 31, 5:14 PM CDT | Severe Thunderstorm Warning | LSX | 31 min |
| Jun 2, 8:02 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 3, 3:35 PM CDT | Flash Flood Watch | LSX | 24 hr |
| Jun 3, 3:40 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 3, 5:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 3, 8:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 3, 10:58 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 4, 1:21 AM CDT | Severe Thunderstorm Warning | LSX | 26 min |
| Jun 5, 9:43 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 6, 4:19 AM CDT | Mesoscale Discussion | SPC | 26 min |
| Jun 6, 10:50 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 8, 3:50 AM CDT | Flash Flood Watch | LSX | 41 hr |
| Jun 8, 5:36 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 12, 12:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 12, 3:06 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 12, 3:37 PM CDT | Flash Flood Watch | LSX | 24 hr |
| Jun 12, 10:11 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 12, 11:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 13, 1:18 AM CDT | Flash Flood Warning | LSX | 6 hr |
| Jun 13, 1:57 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 13, 5:58 AM CDT | Flash Flood Warning | LSX | 5 hr |
| Jun 14, 4:12 AM CDT | Dense Fog Advisory | LSX | 5 hr |
| Jun 15, 11:42 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 15, 1:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jun 19, 8:32 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 24, 9:48 AM CDT | Severe Thunderstorm Warning | LSX | 42 min |
| Jun 24, 6:47 PM CDT | Severe Thunderstorm Warning | LSX | 43 min |
| Jun 24, 7:23 PM CDT | Severe Thunderstorm Warning | LSX | 37 min |
| Jun 24, 7:29 PM CDT | Severe Thunderstorm Warning | LSX | 46 min |
| Jun 24, 8:06 PM CDT | Severe Thunderstorm Warning | LSX | 39 min |
| Jun 26, 1:23 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 27, 8:13 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 27, 11:04 PM CDT | Severe Thunderstorm Warning | LSX | 41 min |
| Jun 27, 11:41 PM CDT | Severe Thunderstorm Warning | LSX | 37 min |
| Jun 27, 11:42 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 2, 9:55 PM CDT | Flash Flood Watch | LSX | 16 hr |
| Jul 2, 10:28 PM CDT | Severe Thunderstorm Warning | LSX | 47 min |
| Jul 3, 12:03 AM CDT | Areal Flood Advisory | LSX | 6 hr |
| Jul 8, 1:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 8, 1:45 PM CDT | Flash Flood Watch | LSX | 14 hr |
| Jul 8, 1:54 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 8, 4:02 PM CDT | Severe Thunderstorm Warning | LSX | 30 min |
| Jul 8, 4:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jul 21, 8:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 21, 9:14 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 22, 3:38 AM CDT | Severe Thunderstorm Warning | LSX | 51 min |
| Jul 22, 7:16 AM CDT | Flash Flood Warning | LSX | 4 hr |
| Jul 22, 8:50 AM CDT | Severe Thunderstorm Warning | LSX | 40 min |
| Jul 22, 9:30 AM CDT | Severe Thunderstorm Warning | LSX | 45 min |
| Jul 22, 9:34 AM CDT | Mesoscale Discussion | SPC | 56 min |
| Jul 22, 11:18 AM CDT | Areal Flood Warning | LSX | 13 hr |
| Jul 24, 4:12 PM CDT | Flash Flood Watch | LSX | 24 hr |
| Jul 24, 11:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 25, 7:08 AM CDT | Flash Flood Warning | LSX | 5 hr |
| Jul 25, 12:01 PM CDT | Areal Flood Warning | LSX | 8 hr |
| Jul 25, 6:38 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 25, 8:06 PM CDT | Areal Flood Warning | LSX | 12 hr |
| Jul 26, 6:05 AM CDT | Areal Flood Warning | LSX | 8 hr |
| Jul 26, 2:01 PM CDT | Areal Flood Warning | LSX | 6 hr |
| Jul 27, 4:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 27, 5:27 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 27, 8:20 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 27, 9:46 PM CDT | Severe Thunderstorm Warning | LSX | 59 min |
| Jul 27, 10:46 PM CDT | Severe Thunderstorm Warning | LSX | 44 min |
| Jul 28, 12:00 AM CDT | Flash Flood Warning | LSX | 6 hr |
| Jul 28, 1:23 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 29, 4:19 PM CDT | Flash Flood Watch | LSX | 19 hr |
| Jul 30, 2:29 AM CDT | Flash Flood Warning | LSX | 6 hr |
| Jul 31, 12:06 AM CDT | Dense Fog Advisory | LSX | 9 hr |
| Aug 1, 3:42 AM CDT | Dense Fog Advisory | LSX | 4 hr |
| Aug 3, 4:07 AM CDT | Excessive Heat Warning | LSX | 63 hr |
| Aug 3, 4:07 AM CDT | Heat Advisory | LSX | 63 hr |
| Aug 5, 2:59 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 28, 3:22 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 28, 6:11 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 28, 7:00 PM CDT | Severe Thunderstorm Warning | LSX | 45 min |
| Aug 28, 10:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Sep 2, 3:57 PM CDT | Flash Flood Watch | LSX | 46 hr |
| Sep 12, 4:28 AM CDT | Flash Flood Warning | LSX | 6 hr |
| Sep 12, 10:22 AM CDT | Areal Flood Warning | LSX | 6 hr |
| Sep 12, 12:07 PM CDT | Flash Flood Watch | LSX | 47 hr |
| Sep 13, 4:07 PM CDT | Flash Flood Warning | LSX | 6 hr |
| Sep 13, 9:56 PM CDT | Areal Flood Warning | LSX | 13 hr |
| Sep 14, 10:20 AM CDT | Areal Flood Warning | LSX | 12 hr |
| Sep 14, 9:37 PM CDT | Areal Flood Warning | LSX | 12 hr |
| Sep 24, 4:08 PM CDT | Areal Flood Advisory | LSX | 4 hr |
| Oct 25, 3:50 PM CDT | Freeze Watch | LSX | 12 hr |
| Oct 26, 3:36 AM CDT | Freeze Warning | LSX | 24 hr |
| Oct 27, 3:16 AM CDT | Freeze Warning | LSX | 30 hr |
| Nov 1, 10:05 PM CDT | Dense Fog Advisory | LSX | 12 hr |
| Nov 29, 3:39 PM CST | Winter Weather Advisory | LSX | 33 hr |
| Dec 14, 3:36 PM CST | Winter Weather Advisory | LSX | 20 hr |
| Dec 14, 5:47 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 14, 11:47 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 15, 4:07 PM CST | Winter Weather Advisory | LSX | 28 hr |
| Dec 17, 4:09 PM CST | Freezing Rain Advisory | LSX | 32 hr |
| Dec 19, 6:06 AM CST | Wind Advisory | LSX | 5 hr |
| Dec 19, 3:41 PM CST | Wind Chill Advisory | LSX | 65 hr |
| Dec 22, 3:57 PM CST | Winter Weather Advisory | LSX | 43 hr |
| Dec 25, 3:56 PM CST | Flash Flood Watch | LSX | 50 hr |
| Dec 27, 12:03 AM CST | Tornado Watch | SPC | 7 hr |
| Dec 27, 3:32 AM CST | Mesoscale Discussion | SPC | 88 min |
| Dec 27, 4:30 AM CST | Tornado Watch | SPC | 8 hr |
| Dec 27, 8:03 AM CST | Mesoscale Discussion | SPC | 117 min |
| Dec 27, 9:26 AM CST | Tornado Warning | LSX | 37 min |
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 | 31 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 19 |
| Tornado Watch | 9 |
| Mesoscale Discussion | 42 |
| Flooding | |
| Areal Flood Warning | 9 |
| Flash Flood Warning | 11 |
| Flash Flood Watch | 17 |
| Flood Watch | 3 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 4 |
| Freezing Rain Advisory | 1 |
| Snow Advisory | 1 |
| Winter Weather Advisory | 7 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 5 |
| 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 archive20072009
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.