Alert archive / Missouri / Washington County
Weather alerts in Washington County, Missouri, 2025
143 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Washington County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 143
- Warnings
- 60
- Watches
- 17
- Advisories
- 33
- Busiest month
- April38 alerts
- Busiest day
- May 20, 202515 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
9 of 19 tornado warnings covering Washington County in 2025 had a tornado report inside them; 4 of 4 tornado reports fell inside a warning, on average 12 minutes after it went out.
Washington County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 19 | 9 | 53% | 4 | 100% | 12 min |
| Severe thunderstorm warnings | 20 | 13 | 35% | 7 | 100% | 19 min |
| Flash flood warnings | 2 | 1 | 50% | 1 | 100% | 0 min |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS St. Louis, MO: tornado warnings | 93 | 34 | 63% | 66 | 76% | 16 min |
| NWS St. Louis, MO: severe thunderstorm warnings | 231 | 103 | 55% | 633 | 67% | 23 min |
| NWS St. Louis, MO: flash flood warnings | 51 | 19 | 63% | 98 | 67% | 105 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 2, 2:29 PM CST | Winter Storm Watch | LSX | 23 hr |
| Jan 3, 1:29 PM CST | Winter Storm Warning | LSX | 65 hr |
| Jan 5, 2:40 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 5, 7:56 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 8, 1:59 PM CST | Winter Weather Advisory | LSX | 52 hr |
| Jan 20, 2:45 AM CST | Cold Weather Advisory | LSX | 36 hr |
| Jan 30, 8:26 PM CST | Dense Fog Advisory | LSX | 11 hr |
| Feb 11, 3:21 AM CST | Winter Weather Advisory | LSX | 39 hr |
| Feb 12, 6:16 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 16, 1:42 PM CST | Winter Storm Watch | LSX | 24 hr |
| Feb 17, 2:08 AM CST | Winter Storm Warning | LSX | 49 hr |
| Feb 18, 12:30 PM CST | Cold Weather Advisory | LSX | 48 hr |
| Feb 28, 2:31 AM CST | Red Flag Warning | LSX | 17 hr |
| Mar 3, 2:11 PM CST | Wind Advisory | LSX | 35 hr |
| Mar 5, 1:08 AM CST | High Wind Warning | LSX | 10 hr |
| Mar 5, 1:19 AM CST | Wind Advisory | LSX | 17 hr |
| Mar 13, 2:08 AM CDT | Wind Advisory | LSX | 47 hr |
| Mar 14, 4:03 PM CDT | Tornado Watch | SPC | 9 hr |
| Mar 14, 7:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 14, 8:13 PM CDT | Severe Thunderstorm Warning | LSX | 62 min |
| Mar 14, 8:22 PM CDT | Tornado Warning | LSX | 38 min |
| Mar 14, 8:46 PM CDT | Tornado Warning | LSX | 44 min |
| Mar 14, 8:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Mar 14, 9:07 PM CDT | Tornado Warning | LSX | 38 min |
| Mar 14, 9:13 PM CDT | Severe Thunderstorm Warning | LSX | 47 min |
| Mar 14, 9:43 PM CDT | Severe Thunderstorm Warning | LSX | 32 min |
| Mar 14, 10:14 PM CDT | Severe Thunderstorm Warning | LSX | 35 min |
| Mar 17, 2:49 PM CDT | Red Flag Warning | LSX | 29 hr |
| Mar 18, 1:18 PM CDT | Wind Advisory | LSX | 38 hr |
| Mar 18, 9:07 PM CDT | Red Flag Warning | LSX | 22 hr |
| Mar 20, 2:30 PM CDT | Red Flag Warning | LSX | 29 hr |
| Mar 23, 6:28 AM CDT | Severe Thunderstorm Warning | LSX | 32 min |
| Mar 30, 11:04 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Mar 30, 12:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Mar 30, 1:23 PM CDT | Severe Thunderstorm Warning | LSX | 52 min |
| Mar 30, 1:50 PM CDT | Severe Thunderstorm Warning | LSX | 40 min |
| Mar 30, 2:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Mar 30, 2:38 PM CDT | Severe Thunderstorm Warning | LSX | 39 min |
| Apr 1, 1:53 PM CDT | Flood Watch | LSX | 4 days |
| Apr 1, 2:00 PM CDT | Wind Advisory | LSX | 28 hr |
| Apr 2, 8:47 AM CDT | Tornado Watch | SPC | 9 hr |
| Apr 2, 1:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Apr 2, 2:57 PM CDT | Tornado Warning | LSX | 33 min |
| Apr 2, 3:25 PM CDT | Tornado Warning | LSX | 36 min |
| Apr 3, 10:53 AM CDT | River Flood Warning | LSX | 5 days |
| Apr 4, 7:06 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Apr 4, 5:07 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 4, 5:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 4, 5:49 PM CDT | Areal Flood Advisory | LSX | 38 min |
| Apr 4, 6:27 PM CDT | Flash Flood Warning | LSX | 5 hr |
| Apr 4, 11:18 PM CDT | Areal Flood Warning | LSX | 5 hr |
| Apr 5, 2:06 PM CDT | Freeze Watch | LSX | 12 hr |
| Apr 6, 2:24 AM CDT | Freeze Watch | LSX | 23 hr |
| Apr 6, 2:24 AM CDT | Freeze Warning | LSX | 31 hr |
| Apr 7, 1:23 AM CDT | Freeze Warning | LSX | 32 hr |
| Apr 17, 1:54 PM CDT | Flood Watch | LSX | 3 days |
| Apr 18, 2:53 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 18, 8:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 18, 8:56 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 19, 12:24 AM CDT | Severe Thunderstorm Warning | LSX | 51 min |
| Apr 19, 5:35 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 19, 8:28 PM CDT | River Flood Warning | LSX | 61 hr |
| Apr 20, 2:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 20, 3:41 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 20, 5:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 20, 6:07 PM CDT | Severe Thunderstorm Warning | LSX | 53 min |
| Apr 20, 6:58 PM CDT | Severe Thunderstorm Warning | LSX | 62 min |
| Apr 20, 7:13 PM CDT | Tornado Warning | LSX | 47 min |
| Apr 20, 7:28 PM CDT | Tornado Warning | LSX | 37 min |
| Apr 29, 8:30 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 29, 8:56 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 29, 12:06 PM CDT | Severe Thunderstorm Warning | LSX | 39 min |
| Apr 29, 12:23 PM CDT | Tornado Warning | LSX | 22 min |
| Apr 29, 1:00 PM CDT | Areal Flood Advisory | LSX | 3 hr |
| Apr 30, 11:37 AM CDT | River Flood Warning | LSX | 33 hr |
| Apr 30, 6:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| May 13, 2:44 AM CDT | Dense Fog Advisory | LSX | 5 hr |
| May 16, 11:41 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 16, 11:58 AM CDT | Tornado Watch | SPC | 8 hr |
| May 16, 1:35 PM CDT | Severe Thunderstorm Warning | LSX | 40 min |
| May 16, 1:48 PM CDT | Tornado Warning | LSX | 34 min |
| May 16, 2:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 3:01 PM CDT | Tornado Warning | LSX | 34 min |
| May 16, 3:45 PM CDT | Severe Thunderstorm Warning | LSX | 45 min |
| May 16, 4:14 PM CDT | Severe Thunderstorm Warning | LSX | 46 min |
| May 19, 7:36 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 19, 8:26 PM CDT | Tornado Watch | SPC | 7 hr |
| May 19, 8:35 PM CDT | Severe Thunderstorm Warning | LSX | 40 min |
| May 19, 8:43 PM CDT | Tornado Warning | LSX | 47 min |
| May 19, 9:33 PM CDT | Tornado Warning | LSX | 42 min |
| May 19, 10:13 PM CDT | Tornado Warning | LSX | 32 min |
| May 19, 10:17 PM CDT | Tornado Warning | LSX | 31 min |
| May 19, 10:26 PM CDT | Severe Thunderstorm Warning | LSX | 49 min |
| May 19, 10:30 PM CDT | Tornado Warning | LSX | 45 min |
| May 19, 10:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 19, 10:43 PM CDT | Tornado Warning | LSX | 32 min |
| May 19, 10:47 PM CDT | Tornado Warning | LSX | 43 min |
| May 19, 11:07 PM CDT | Tornado Warning | LSX | 38 min |
| May 20, 12:03 AM CDT | Areal Flood Advisory | LSX | 6 hr |
| May 20, 9:44 AM CDT | River Flood Warning | LSX | 35 hr |
| Jun 4, 1:43 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 4, 4:12 PM CDT | Flash Flood Warning | LSX | 2 hr |
| Jun 4, 6:19 PM CDT | Areal Flood Advisory | LSX | 2 hr |
| Jun 4, 10:27 PM CDT | River Flood Warning | LSX | 11 hr |
| Jun 6, 2:05 PM CDT | River Flood Warning | LSX | 21 hr |
| Jun 7, 12:17 AM CDT | Dense Fog Advisory | LSX | 9 hr |
| Jun 7, 3:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 7, 6:56 PM CDT | Tornado Warning | LSX | 34 min |
| Jun 8, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 8, 8:01 PM CDT | Severe Thunderstorm Warning | LSX | 44 min |
| Jun 8, 8:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 17, 4:39 AM CDT | Dense Fog Advisory | LSX | 4 hr |
| Jun 18, 11:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 19, 1:56 PM CDT | Heat Advisory | LSX | 7 days |
| Jun 29, 9:06 PM CDT | River Flood Warning | LSX | 48 hr |
| Jul 6, 12:09 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 12:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 12:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 18, 2:06 PM CDT | Extreme Heat Warning | LSX | 12 days |
| Jul 21, 1:57 PM CDT | Heat Advisory | LSX | 9 days |
| Jul 27, 9:12 AM CDT | Areal Flood Advisory | LSX | 3 hr |
| Jul 30, 5:53 PM CDT | Severe Thunderstorm Warning | LSX | 43 min |
| Aug 10, 2:44 PM CDT | Areal Flood Advisory | LSX | 3 hr |
| Aug 14, 2:34 PM CDT | Heat Advisory | LSX | 5 days |
| Sep 14, 3:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 22, 9:24 PM CDT | Dense Fog Advisory | LSX | 9 hr |
| Oct 18, 11:17 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Oct 18, 3:08 PM CDT | Severe Thunderstorm Warning | LSX | 26 min |
| Oct 30, 1:47 PM CDT | Frost Advisory | LSX | 18 hr |
| Oct 31, 2:16 AM CDT | Freeze Watch | LSX | 36 hr |
| Nov 1, 1:55 AM CDT | Freeze Warning | LSX | 31 hr |
| Nov 17, 11:55 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Nov 18, 2:56 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Nov 20, 6:11 AM CST | Areal Flood Advisory | LSX | 3 hr |
| Nov 20, 7:22 PM CST | Dense Fog Advisory | LSX | 16 hr |
| Nov 23, 4:23 AM CST | Dense Fog Advisory | LSX | 6 hr |
| Nov 23, 5:41 PM CST | Dense Fog Advisory | LSX | 15 hr |
| Nov 30, 12:51 PM CST | Winter Weather Advisory | LSX | 38 hr |
| Dec 18, 1:56 AM CST | Wind Advisory | LSX | 22 hr |
| Dec 18, 10:44 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 23, 9:53 PM CST | Dense Fog Advisory | LSX | 11 hr |
| Dec 26, 7:29 PM CST | Dense Fog Advisory | LSX | 17 hr |
| Dec 28, 8:01 AM CST | Wind Advisory | LSX | 22 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 | 20 |
| Tornado Warning | 19 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 33 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 2 |
| River Flood Warning | 7 |
| Flood Watch | 2 |
| Areal Flood Advisory | 7 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 3 |
| Heat | |
| Extreme Heat Warning | 1 |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 3 |
| Cold Weather Advisory | 2 |
| Frost Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 7 |
| Fire | |
| Red Flag Warning | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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.