Alert archive / Michigan / Lenawee County
Weather alerts in Lenawee County, Michigan, 2025
90 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lenawee County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 90
- Warnings
- 11
- Watches
- 11
- Advisories
- 24
- Busiest month
- June22 alerts
- Busiest day
- March 15, 20255 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Lenawee County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 6 | 25% | 4 | 100% | 21 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Detroit, MI: tornado warnings | 11 | 3 | 73% | 7 | 43% | 9 min |
| NWS Detroit, MI: severe thunderstorm warnings | 84 | 54 | 36% | 132 | 89% | 24 min |
| NWS Detroit, MI: flash flood warnings | 10 | 6 | 40% | 12 | 75% | 52 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 10, 2:30 AM EST | Winter Weather Advisory | DTX | 23 hr |
| Jan 19, 12:02 PM EST | Cold Weather Advisory | DTX | 72 hr |
| Jan 26, 1:42 PM EST | Wind Advisory | DTX | 33 hr |
| Feb 2, 9:28 PM EST | Dense Fog Advisory | DTX | 7 hr |
| Feb 5, 2:52 AM EST | Winter Weather Advisory | DTX | 30 hr |
| Feb 10, 3:02 PM EST | Winter Storm Watch | DTX | 36 hr |
| Feb 11, 2:39 PM EST | Winter Weather Advisory | DTX | 37 hr |
| Feb 13, 2:08 PM EST | Special Weather Statement | DTX | 82 min |
| Feb 14, 3:03 PM EST | Winter Storm Watch | DTX | 24 hr |
| Feb 14, 3:03 PM EST | Winter Weather Advisory | DTX | 24 hr |
| Feb 15, 3:10 PM EST | Winter Weather Advisory | DTX | 20 hr |
| Feb 28, 2:55 AM EST | Wind Advisory | DTX | 14 hr |
| Mar 5, 11:08 AM EST | Special Weather Statement | DTX | 52 min |
| Mar 5, 2:48 PM EST | Wind Advisory | DTX | 21 hr |
| Mar 15, 12:13 AM EDT | Wind Advisory | DTX | 23 hr |
| Mar 15, 3:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Mar 15, 4:36 PM EDT | Special Weather Statement | DTX | 39 min |
| Mar 15, 4:40 PM EDT | Severe Thunderstorm Warning | DTX | 40 min |
| Mar 15, 5:00 PM EDT | Severe Thunderstorm Warning | DTX | 44 min |
| Mar 30, 3:49 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Mar 30, 5:23 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 30, 5:54 PM EDT | Severe Thunderstorm Warning | DTX | 66 min |
| Apr 1, 2:37 PM EDT | Flood Watch | DTX | 37 hr |
| Apr 2, 8:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 2, 9:12 PM EDT | Special Weather Statement | DTX | 33 min |
| Apr 2, 9:48 PM EDT | Special Weather Statement | DTX | 72 min |
| Apr 2, 11:18 PM EDT | Special Weather Statement | DTX | 57 min |
| Apr 4, 11:05 AM EDT | River Flood Warning | DTX | 23 hr |
| Apr 26, 2:43 PM EDT | Frost Advisory | DTX | 17 hr |
| Apr 29, 3:33 AM EDT | Wind Advisory | DTX | 14 hr |
| May 8, 8:58 AM EDT | Special Weather Statement | DTX | 62 min |
| May 8, 10:38 AM EDT | Frost Advisory | DTX | 22 hr |
| May 14, 5:33 PM EDT | Special Weather Statement | DTX | 57 min |
| May 14, 6:28 PM EDT | Special Weather Statement | DTX | 62 min |
| May 15, 10:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| May 15, 11:28 PM EDT | Tornado Watch | SPC | 3 hr |
| May 16, 12:50 AM EDT | Special Weather Statement | DTX | 55 min |
| Jun 4, 12:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 2:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 9, 3:10 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 18, 3:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 4:09 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 6:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 18, 6:25 PM EDT | Severe Thunderstorm Warning | DTX | 80 min |
| Jun 20, 2:51 AM EDT | Extreme Heat Watch | DTX | 36 hr |
| Jun 20, 3:22 PM EDT | Heat Advisory | DTX | 4 days |
| Jun 24, 1:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jun 24, 4:27 PM EDT | Special Weather Statement | DTX | 78 min |
| Jun 24, 4:46 PM EDT | Severe Thunderstorm Warning | DTX | 30 min |
| Jun 25, 2:18 PM EDT | Special Weather Statement | DTX | 42 min |
| Jun 26, 12:22 PM EDT | Special Weather Statement | DTX | 53 min |
| Jun 26, 12:42 PM EDT | Severe Thunderstorm Warning | DTX | 60 min |
| Jun 26, 1:45 PM EDT | Severe Thunderstorm Warning | DTX | 53 min |
| Jun 26, 2:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 27, 1:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 27, 4:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 27, 4:55 PM EDT | Special Weather Statement | DTX | 65 min |
| Jun 30, 12:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 3, 5:43 PM EDT | Special Weather Statement | DTX | 62 min |
| Jul 6, 2:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jul 6, 6:45 PM EDT | Special Weather Statement | DTX | 45 min |
| Jul 9, 1:57 PM EDT | Special Weather Statement | DTX | 33 min |
| Jul 9, 2:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 12, 10:06 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 11:49 AM EDT | Special Weather Statement | DTX | 56 min |
| Jul 12, 12:06 PM EDT | Severe Thunderstorm Warning | DTX | 54 min |
| Jul 16, 3:07 PM EDT | Special Weather Statement | DTX | 53 min |
| Jul 16, 7:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 23, 2:46 AM EDT | Heat Advisory | DTX | 41 hr |
| Jul 24, 5:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 24, 7:06 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 26, 1:50 PM EDT | Special Weather Statement | DTX | 40 min |
| Jul 28, 3:02 AM EDT | Heat Advisory | DTX | 18 hr |
| Jul 28, 3:47 PM EDT | Special Weather Statement | DTX | 43 min |
| Aug 11, 5:57 PM EDT | Special Weather Statement | DTX | 63 min |
| Aug 12, 5:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 6:00 PM EDT | Special Weather Statement | DTX | 45 min |
| Aug 16, 6:47 PM EDT | Special Weather Statement | DTX | 58 min |
| Sep 23, 3:40 AM EDT | Dense Fog Advisory | DTX | 5 hr |
| Sep 24, 3:47 AM EDT | Areal Flood Advisory | DTX | 4 hr |
| Oct 8, 11:12 AM EDT | Frost Advisory | DTX | 22 hr |
| Oct 9, 11:31 AM EDT | Frost Advisory | DTX | 21 hr |
| Nov 25, 2:17 PM EST | Wind Advisory | DTX | 38 hr |
| Nov 28, 3:12 PM EST | Winter Storm Warning | DTX | 43 hr |
| Dec 18, 7:29 PM EST | Special Weather Statement | DTX | 61 min |
| Dec 25, 10:54 AM EST | Winter Weather Advisory | DTX | 29 hr |
| Dec 27, 3:01 PM EST | High Wind Watch | DTX | 23 hr |
| Dec 28, 2:00 PM EST | High Wind Warning | DTX | 22 hr |
| Dec 29, 11:57 AM EST | Wind Advisory | DTX | 9 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 | 5 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 19 |
| Special Weather Statement | 25 |
| Flooding | |
| River Flood Warning | 1 |
| Flood Watch | 1 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 6 |
| Heat | |
| Extreme Heat Watch | 1 |
| Heat Advisory | 3 |
| Cold | |
| Cold Weather Advisory | 1 |
| Frost Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
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.