Alert archive / Missouri / Shannon County
Weather alerts in Shannon County, Missouri, 2018
169 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Shannon County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 169
- Warnings
- 73
- Watches
- 20
- Advisories
- 41
- Busiest month
- June41 alerts
- Busiest day
- May 31, 201810 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 6 tornado warnings covering Shannon County in 2018 had a tornado report inside them.
Shannon County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 6 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 37 | 28 | 24% | 25 | 96% | 21 min |
| Flash flood warnings | 7 | 5 | 29% | 1 | 100% | 164 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Springfield, MO: tornado warnings | 44 | 15 | 66% | 44 | 73% | 13 min |
| NWS Springfield, MO: severe thunderstorm warnings | 332 | 221 | 33% | 577 | 82% | 22 min |
| NWS Springfield, MO: flash flood warnings | 49 | 32 | 35% | 65 | 94% | 119 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 6, 2:55 AM CST | Winter Weather Advisory | SGF | 39 hr |
| Jan 7, 9:10 PM CST | Dense Fog Advisory | SGF | 15 hr |
| Jan 8, 2:41 PM CST | Dense Fog Advisory | SGF | 21 hr |
| Jan 9, 3:05 PM CST | Dense Fog Advisory | SGF | 19 hr |
| Jan 11, 2:24 AM CST | Winter Weather Advisory | SGF | 22 hr |
| Jan 11, 8:43 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 13, 2:14 PM CST | Winter Weather Advisory | SGF | 25 hr |
| Jan 14, 2:56 PM CST | Wind Chill Advisory | SGF | 45 hr |
| Jan 14, 2:56 PM CST | Winter Weather Advisory | SGF | 24 hr |
| Jan 16, 12:16 PM CST | Wind Chill Advisory | SGF | 4 hr |
| Jan 22, 1:06 AM CST | Severe Thunderstorm Warning | SGF | 54 min |
| Jan 22, 1:16 AM CST | Mesoscale Discussion | SPC | 119 min |
| Jan 22, 1:40 AM CST | Severe Thunderstorm Warning | SGF | 54 min |
| Feb 4, 10:48 AM CST | Winter Weather Advisory | SGF | 7 hr |
| Feb 6, 3:07 AM CST | Winter Weather Advisory | SGF | 27 hr |
| Feb 6, 6:08 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 9, 3:12 PM CST | Winter Weather Advisory | SGF | 44 hr |
| Feb 19, 3:22 PM CST | Flood Watch | SGF | 39 hr |
| Feb 21, 12:27 AM CST | Areal Flood Advisory | SGF | 12 hr |
| Feb 21, 2:39 AM CST | Areal Flood Warning | SGF | 8 hr |
| Feb 21, 3:28 AM CST | Winter Weather Advisory | SGF | 30 hr |
| Feb 21, 4:42 AM CST | River Flood Warning | SGF | 26 hr |
| Feb 22, 1:46 PM CST | Flood Watch | SGF | 52 hr |
| Feb 24, 1:01 PM CST | River Flood Warning | SGF | 24 hr |
| Feb 24, 2:43 PM CST | Areal Flood Warning | SGF | 30 hr |
| Feb 24, 9:40 PM CST | River Flood Warning | SGF | 32 hr |
| Feb 25, 3:31 AM CST | River Flood Warning | SGF | 11 hr |
| Feb 25, 6:43 PM CST | Areal Flood Advisory | SGF | 18 hr |
| Mar 5, 1:36 PM CST | Wind Advisory | SGF | 28 hr |
| Mar 6, 2:59 AM CST | Red Flag Warning | PAH | 15 hr |
| Mar 25, 2:38 PM CDT | Flood Watch | SGF | 55 hr |
| Mar 26, 4:58 AM CDT | Severe Thunderstorm Warning | SGF | 33 min |
| Mar 27, 12:23 PM CDT | Areal Flood Warning | SGF | 28 hr |
| Mar 29, 10:16 AM CDT | Areal Flood Warning | SGF | 23 hr |
| Mar 29, 10:35 AM CDT | Areal Flood Warning | SGF | 23 hr |
| Apr 3, 3:35 AM CDT | Freeze Warning | SGF | 29 hr |
| Apr 3, 12:57 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 3, 1:33 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 3, 3:09 PM CDT | Severe Thunderstorm Warning | SGF | 15 min |
| Apr 4, 3:46 AM CDT | Freeze Warning | SGF | 28 hr |
| Apr 5, 2:46 PM CDT | Freeze Warning | SGF | 44 hr |
| Apr 6, 3:12 PM CDT | Winter Weather Advisory | SGF | 17 hr |
| Apr 7, 3:19 AM CDT | Freeze Warning | SGF | 30 hr |
| Apr 9, 2:00 PM CDT | Freeze Warning | SGF | 18 hr |
| Apr 12, 3:02 AM CDT | Wind Advisory | SGF | 39 hr |
| Apr 13, 5:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 13, 5:27 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 13, 8:37 PM CDT | Severe Thunderstorm Warning | SGF | 38 min |
| Apr 13, 8:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Apr 13, 9:30 PM CDT | Severe Thunderstorm Warning | SGF | 60 min |
| Apr 13, 9:38 PM CDT | Tornado Warning | SGF | 37 min |
| Apr 15, 3:05 AM CDT | Freeze Warning | SGF | 30 hr |
| Apr 16, 2:17 PM CDT | Frost Advisory | SGF | 19 hr |
| Apr 19, 2:03 AM CDT | Frost Advisory | SGF | 31 hr |
| May 2, 10:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| May 2, 11:09 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 3, 2:32 AM CDT | Mesoscale Discussion | SPC | 88 min |
| May 3, 3:46 AM CDT | Severe Thunderstorm Warning | SGF | 59 min |
| May 3, 10:13 PM CDT | River Flood Warning | SGF | 11 hr |
| May 19, 11:12 AM CDT | Severe Thunderstorm Warning | SGF | 63 min |
| May 19, 11:56 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 19, 12:58 PM CDT | Severe Thunderstorm Warning | SGF | 36 min |
| May 19, 1:36 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 19, 2:24 PM CDT | Severe Thunderstorm Warning | SGF | 66 min |
| May 19, 3:16 PM CDT | Severe Thunderstorm Warning | SGF | 32 min |
| May 19, 9:34 PM CDT | Special Weather Statement | SGF | 56 min |
| May 19, 10:42 PM CDT | Special Weather Statement | SGF | 48 min |
| May 19, 11:03 PM CDT | Flash Flood Warning | SGF | 6 hr |
| May 20, 4:54 AM CDT | Areal Flood Advisory | SGF | 6 hr |
| May 20, 6:06 AM CDT | River Flood Warning | SGF | 15 hr |
| May 20, 9:47 PM CDT | Flash Flood Warning | SGF | 6 hr |
| May 21, 3:42 AM CDT | Areal Flood Warning | SGF | 6 hr |
| May 21, 9:17 AM CDT | Areal Flood Advisory | SGF | 12 hr |
| May 31, 12:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 31, 1:57 PM CDT | Tornado Watch | SPC | 6 hr |
| May 31, 3:31 PM CDT | Special Weather Statement | SGF | 44 min |
| May 31, 4:10 PM CDT | Severe Thunderstorm Warning | SGF | 50 min |
| May 31, 4:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 4:45 PM CDT | Tornado Warning | SGF | 30 min |
| May 31, 5:25 PM CDT | Special Weather Statement | SGF | 50 min |
| May 31, 5:33 PM CDT | Severe Thunderstorm Warning | SGF | 42 min |
| May 31, 6:19 PM CDT | Severe Thunderstorm Warning | SGF | 41 min |
| May 31, 6:32 PM CDT | Severe Thunderstorm Warning | SGF | 43 min |
| May 31, 7:00 PM CDT | Severe Thunderstorm Warning | SGF | 18 min |
| May 31, 7:03 PM CDT | Tornado Warning | SGF | 27 min |
| May 31, 7:16 PM CDT | Flash Flood Warning | SGF | 4 hr |
| May 31, 7:24 PM CDT | Severe Thunderstorm Warning | SGF | 51 min |
| May 31, 7:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| May 31, 7:55 PM CDT | Severe Thunderstorm Warning | SGF | 50 min |
| May 31, 7:56 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 31, 7:59 PM CDT | Severe Thunderstorm Warning | SGF | 11 min |
| May 31, 8:09 PM CDT | Flash Flood Warning | SGF | 5 hr |
| May 31, 8:16 PM CDT | Severe Thunderstorm Warning | SGF | 14 min |
| Jun 2, 2:19 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jun 2, 3:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 4:23 PM CDT | Special Weather Statement | SGF | 52 min |
| Jun 2, 5:45 PM CDT | Severe Thunderstorm Warning | SGF | 45 min |
| Jun 2, 5:58 PM CDT | Severe Thunderstorm Warning | SGF | 62 min |
| Jun 2, 6:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jun 2, 6:44 PM CDT | Severe Thunderstorm Warning | SGF | 61 min |
| Jun 2, 7:31 PM CDT | Severe Thunderstorm Warning | SGF | 59 min |
| Jun 8, 6:04 PM CDT | Severe Thunderstorm Warning | SGF | 41 min |
| Jun 8, 7:07 PM CDT | Flash Flood Warning | SGF | 2 hr |
| Jun 9, 7:04 AM CDT | Special Weather Statement | SGF | 56 min |
| Jun 9, 8:00 AM CDT | Special Weather Statement | SGF | 60 min |
| Jun 9, 8:43 AM CDT | Areal Flood Advisory | SGF | 6 hr |
| Jun 9, 12:44 PM CDT | River Flood Warning | SGF | 15 hr |
| Jun 14, 1:50 PM CDT | Special Weather Statement | SGF | 40 min |
| Jun 14, 2:31 PM CDT | Special Weather Statement | SGF | 44 min |
| Jun 14, 2:46 PM CDT | Severe Thunderstorm Warning | SGF | 33 min |
| Jun 14, 3:00 PM CDT | Severe Thunderstorm Warning | SGF | 45 min |
| Jun 14, 3:21 PM CDT | Severe Thunderstorm Warning | SGF | 13 min |
| Jun 14, 3:47 PM CDT | Severe Thunderstorm Warning | SGF | 43 min |
| Jun 14, 4:14 PM CDT | Areal Flood Advisory | SGF | 6 hr |
| Jun 14, 4:33 PM CDT | Areal Flood Advisory | SGF | 6 hr |
| Jun 16, 3:26 AM CDT | Heat Advisory | SGF | 64 hr |
| Jun 26, 3:20 AM CDT | Heat Advisory | SGF | 5 days |
| Jun 26, 7:39 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 12:35 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 26, 1:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 26, 6:29 PM CDT | Severe Thunderstorm Warning | SGF | 46 min |
| Jun 26, 7:15 PM CDT | Special Weather Statement | SGF | 45 min |
| Jun 30, 4:06 PM CDT | Severe Thunderstorm Warning | SGF | 39 min |
| Jun 30, 4:47 PM CDT | Special Weather Statement | SGF | 28 min |
| Jul 10, 2:48 PM CDT | Heat Advisory | SGF | 4 days |
| Jul 14, 10:48 PM CDT | Special Weather Statement | SGF | 27 min |
| Jul 19, 11:22 AM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 19, 2:15 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 3:48 AM CDT | Heat Advisory | SGF | 16 hr |
| Jul 20, 3:46 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jul 20, 3:58 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 20, 4:44 PM CDT | Severe Thunderstorm Warning | SGF | 33 min |
| Jul 20, 4:49 PM CDT | Severe Thunderstorm Warning | SGF | 29 min |
| Jul 27, 1:14 AM CDT | Dense Fog Advisory | SGF | 6 hr |
| Aug 7, 12:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 7, 1:15 PM CDT | Severe Thunderstorm Warning | SGF | 45 min |
| Aug 7, 1:55 PM CDT | Severe Thunderstorm Warning | SGF | 35 min |
| Aug 8, 2:52 PM CDT | Special Weather Statement | SGF | 38 min |
| Aug 9, 2:35 PM CDT | Special Weather Statement | SGF | 40 min |
| Aug 15, 4:23 AM CDT | Flash Flood Watch | SGF | 10 hr |
| Aug 16, 6:51 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 16, 11:05 PM CDT | Special Weather Statement | SGF | 40 min |
| Aug 16, 11:37 PM CDT | Severe Thunderstorm Warning | SGF | 23 min |
| Aug 19, 4:07 PM CDT | Tornado Watch | SPC | 7 hr |
| Aug 20, 12:46 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 6, 4:05 AM CDT | Flash Flood Watch | SGF | 53 hr |
| Sep 7, 10:03 PM CDT | Flash Flood Warning | SGF | 6 hr |
| Sep 8, 3:32 AM CDT | Areal Flood Warning | SGF | 8 hr |
| Sep 25, 5:18 AM CDT | Dense Fog Advisory | SGF | 3 hr |
| Oct 6, 7:25 PM CDT | Flash Flood Warning | SGF | 6 hr |
| Oct 7, 1:16 AM CDT | Areal Flood Warning | SGF | 9 hr |
| Oct 17, 3:24 AM CDT | Frost Advisory | SGF | 30 hr |
| Oct 20, 2:54 AM CDT | Freeze Warning | SGF | 30 hr |
| Oct 21, 3:21 PM CDT | Frost Advisory | SGF | 17 hr |
| Nov 1, 10:13 AM CDT | Areal Flood Advisory | SGF | 4 hr |
| Nov 11, 2:00 PM CST | Winter Weather Advisory | SGF | 36 hr |
| Nov 14, 2:29 AM CST | Winter Weather Advisory | SGF | 34 hr |
| Nov 25, 1:59 AM CST | Dense Fog Advisory | SGF | 4 hr |
| Nov 25, 1:59 AM CST | Wind Advisory | SGF | 19 hr |
| Nov 29, 10:04 PM CST | Dense Fog Advisory | SGF | 14 hr |
| Nov 30, 9:47 PM CST | Tornado Watch | SPC | 5 hr |
| Dec 1, 12:58 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 1, 1:56 AM CST | Tornado Warning | SGF | 23 min |
| Dec 1, 1:58 AM CST | Severe Thunderstorm Warning | SGF | 49 min |
| Dec 1, 2:10 AM CST | Tornado Warning | SGF | 20 min |
| Dec 1, 2:15 AM CST | Tornado Warning | SGF | 30 min |
| Dec 13, 1:25 PM CST | Flood Watch | SGF | 40 hr |
| Dec 26, 10:00 AM CST | Dense Fog Advisory | SGF | 11 hr |
| Dec 27, 9:15 AM CST | Areal Flood Advisory | SGF | 4 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 | 37 |
| Tornado Warning | 6 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 20 |
| Special Weather Statement | 15 |
| Flooding | |
| Areal Flood Warning | 8 |
| Flash Flood Warning | 7 |
| River Flood Warning | 7 |
| Flash Flood Watch | 2 |
| Flood Watch | 4 |
| Areal Flood Advisory | 9 |
| Winter | |
| Winter Weather Advisory | 11 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 7 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.