Alert archive / Missouri / Sainte Genevieve County
Weather alerts in Sainte Genevieve County, Missouri, 2017
106 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sainte Genevieve County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 106
- Warnings
- 35
- Watches
- 19
- Advisories
- 18
- Busiest month
- April21 alerts
- Busiest day
- April 29, 20178 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 1 tornado warnings covering Sainte Genevieve County in 2017 had a tornado report inside them.
Sainte Genevieve County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 16 | 9 | 44% | 0 | ||
| Flash flood warnings | 2 | 1 | 50% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS St. Louis, MO: tornado warnings | 22 | 9 | 59% | 26 | 54% | 11 min |
| NWS St. Louis, MO: severe thunderstorm warnings | 204 | 130 | 36% | 487 | 82% | 22 min |
| NWS St. Louis, MO: flash flood warnings | 20 | 9 | 55% | 33 | 97% | 302 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 1, 8:54 PM CST | Dense Fog Advisory | LSX | 12 hr |
| Jan 2, 5:43 PM CST | Dense Fog Advisory | LSX | 13 hr |
| Jan 4, 3:24 AM CST | Winter Weather Advisory | LSX | 33 hr |
| Jan 10, 3:31 AM CST | Wind Advisory | LSX | 14 hr |
| Jan 11, 3:31 AM CST | Winter Storm Watch | LSX | 34 hr |
| Jan 12, 1:49 PM CST | Ice Storm Warning | LSX | 70 hr |
| Jan 13, 3:39 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 13, 10:28 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 14, 2:14 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 15, 10:41 PM CST | Dense Fog Advisory | LSX | 13 hr |
| Jan 19, 3:37 PM CST | Dense Fog Advisory | LSX | 20 hr |
| Feb 19, 1:24 AM CST | Dense Fog Advisory | LSX | 10 hr |
| Feb 19, 10:15 PM CST | Dense Fog Advisory | LSX | 8 hr |
| Feb 21, 10:42 PM CST | Dense Fog Advisory | LSX | 10 hr |
| Feb 28, 1:46 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 28, 2:19 PM CST | Tornado Watch | SPC | 7 hr |
| Feb 28, 3:38 PM CST | Severe Thunderstorm Warning | LSX | 52 min |
| Feb 28, 4:07 PM CST | Severe Thunderstorm Warning | LSX | 26 min |
| Feb 28, 5:44 PM CST | Severe Thunderstorm Warning | LSX | 31 min |
| Feb 28, 6:59 PM CST | Severe Thunderstorm Warning | LSX | 46 min |
| Feb 28, 7:30 PM CST | Tornado Warning | LSX | 19 min |
| Feb 28, 7:34 PM CST | Severe Thunderstorm Warning | LSX | 17 min |
| Feb 28, 7:46 PM CST | Mesoscale Discussion | SPC | 119 min |
| Feb 28, 9:04 PM CST | Tornado Watch | SPC | 7 hr |
| Mar 1, 2:17 AM CST | Special Weather Statement | LSX | 43 min |
| Mar 6, 8:22 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 6, 8:52 PM CST | Tornado Watch | SPC | 6 hr |
| Mar 6, 11:13 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 9, 3:35 PM CST | Freeze Warning | LSX | 68 hr |
| Mar 13, 2:04 PM CDT | Freeze Warning | LSX | 68 hr |
| Mar 24, 9:36 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Mar 29, 8:22 PM CDT | Tornado Watch | SPC | 5 hr |
| Mar 29, 9:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Mar 30, 11:56 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Mar 30, 12:31 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 5, 12:20 AM CDT | Severe Thunderstorm Warning | LSX | 40 min |
| Apr 5, 1:27 AM CDT | Severe Thunderstorm Warning | LSX | 25 min |
| Apr 5, 11:24 AM CDT | River Flood Warning | LSX | 10 days |
| Apr 16, 2:02 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 26, 12:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Apr 26, 12:46 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 26, 1:14 PM CDT | Severe Thunderstorm Warning | LSX | 46 min |
| Apr 27, 4:29 AM CDT | Flash Flood Watch | LSX | 4 days |
| Apr 28, 1:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 28, 6:28 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 28, 10:18 PM CDT | River Flood Warning | LSX | 43 days |
| Apr 28, 11:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 29, 12:41 AM CDT | Severe Thunderstorm Warning | LSX | 49 min |
| Apr 29, 1:53 AM CDT | Flash Flood Warning | LSX | 24 hr |
| Apr 29, 12:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 29, 3:28 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 29, 3:57 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 29, 6:30 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Apr 30, 1:42 AM CDT | Areal Flood Warning | LSX | 12 hr |
| Apr 30, 9:04 AM CDT | Areal Flood Warning | LSX | 12 hr |
| Apr 30, 1:45 PM CDT | Areal Flood Warning | LSX | 15 hr |
| Apr 30, 9:01 PM CDT | Areal Flood Warning | LSX | 12 hr |
| May 1, 4:44 AM CDT | Areal Flood Warning | LSX | 12 hr |
| May 1, 8:59 AM CDT | Areal Flood Warning | LSX | 4 days |
| May 1, 4:42 PM CDT | Areal Flood Warning | LSX | 24 hr |
| May 2, 4:07 AM CDT | Flash Flood Watch | LSX | 64 hr |
| May 2, 4:43 PM CDT | Areal Flood Warning | LSX | 3 days |
| May 17, 3:20 AM CDT | Wind Advisory | LSX | 16 hr |
| May 19, 4:07 AM CDT | Mesoscale Discussion | SPC | 113 min |
| May 19, 4:16 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 20, 1:45 AM CDT | Mesoscale Discussion | SPC | 90 min |
| May 27, 12:13 PM CDT | Tornado Watch | SPC | 7 hr |
| May 27, 1:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| May 27, 1:33 PM CDT | Special Weather Statement | LSX | 42 min |
| May 27, 1:58 PM CDT | Severe Thunderstorm Warning | LSX | 51 min |
| May 27, 4:45 PM CDT | Severe Thunderstorm Warning | LSX | 45 min |
| May 27, 6:26 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 14, 12:40 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 16, 12:45 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 17, 9:50 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Jun 17, 10:53 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 1:40 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 18, 2:08 AM CDT | Severe Thunderstorm Warning | LSX | 37 min |
| Jul 13, 8:50 PM CDT | Flash Flood Warning | LSX | 6 hr |
| Jul 15, 2:30 PM CDT | Excessive Heat Watch | LSX | 3 days |
| Jul 17, 3:00 PM CDT | Excessive Heat Warning | LSX | 6 days |
| Jul 18, 3:30 PM CDT | Heat Advisory | LSX | 3 days |
| Jul 25, 3:42 AM CDT | Heat Advisory | LSX | 40 hr |
| Aug 15, 4:17 AM CDT | Dense Fog Advisory | LSX | 5 hr |
| Aug 20, 1:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 29, 4:15 AM CDT | Dense Fog Advisory | LSX | 6 hr |
| Sep 4, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 4, 9:26 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Sep 4, 9:55 PM CDT | Special Weather Statement | LSX | 35 min |
| Sep 14, 3:19 AM CDT | Dense Fog Advisory | LSX | 6 hr |
| Oct 9, 5:22 AM CDT | Dense Fog Advisory | LSX | 6 hr |
| Oct 10, 3:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 10, 3:25 PM CDT | Severe Thunderstorm Warning | LSX | 38 min |
| Oct 27, 3:34 AM CDT | Freeze Watch | LSX | 12 hr |
| Oct 27, 3:09 PM CDT | Freeze Warning | LSX | 42 hr |
| Nov 2, 7:18 PM CDT | Severe Thunderstorm Warning | LSX | 29 min |
| Nov 2, 7:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Nov 2, 8:50 PM CDT | Severe Thunderstorm Warning | LSX | 40 min |
| Nov 5, 12:35 PM CST | Tornado Watch | SPC | 6 hr |
| Nov 5, 2:51 PM CST | Mesoscale Discussion | SPC | 114 min |
| Nov 5, 5:35 PM CST | Severe Thunderstorm Warning | LSX | 10 min |
| Nov 17, 3:35 PM CST | Wind Advisory | LSX | 26 hr |
| Nov 18, 10:24 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Nov 18, 11:04 AM CST | Severe Thunderstorm Watch | SPC | 8 hr |
| Dec 11, 3:04 AM CST | Red Flag Warning | LSX | 15 hr |
| Dec 29, 3:10 PM CST | Wind Chill Advisory | LSX | 4 days |
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 | 16 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 31 |
| Special Weather Statement | 3 |
| Flooding | |
| Areal Flood Warning | 8 |
| Flash Flood Warning | 2 |
| River Flood Warning | 2 |
| Flash Flood Watch | 2 |
| Winter | |
| Ice Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.