Alert archive / Michigan / Lenawee County
Weather alerts in Lenawee County, Michigan, 2024
73 weather alerts in 2024, 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 2024. Tap one for its archive.
- Alerts
- 73
- Warnings
- 7
- Watches
- 10
- Advisories
- 18
- Busiest month
- June21 alerts
- Busiest day
- June 25, 20245 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, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 5 | 5 | 0% | 7 | 86% | 22 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Detroit, MI: tornado warnings | 4 | 1 | 75% | 3 | 33% | 1 min |
| NWS Detroit, MI: severe thunderstorm warnings | 76 | 45 | 41% | 106 | 71% | 24 min |
| NWS Detroit, MI: flash flood warnings | 2 | 0 | 100% | 0 |
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 8, 3:06 PM EST | Winter Weather Advisory | DTX | 25 hr |
| Jan 12, 3:41 AM EST | Winter Weather Advisory | DTX | 47 hr |
| Jan 13, 3:22 PM EST | Wind Chill Advisory | DTX | 30 hr |
| Jan 14, 9:32 PM EST | Wind Chill Warning | DTX | 14 hr |
| Jan 16, 3:04 AM EST | Wind Chill Advisory | DTX | 33 hr |
| Jan 18, 3:58 PM EST | Winter Weather Advisory | DTX | 24 hr |
| Jan 22, 3:53 AM EST | Winter Weather Advisory | DTX | 36 hr |
| Jan 22, 10:17 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 23, 9:57 PM EST | Dense Fog Advisory | DTX | 48 hr |
| Feb 27, 3:15 PM EST | Wind Advisory | DTX | 28 hr |
| Feb 27, 9:45 PM EST | Severe Thunderstorm Watch | SPC | 6 hr |
| Feb 27, 11:44 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 26, 2:08 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 26, 5:11 PM EDT | Special Weather Statement | DTX | 64 min |
| Apr 11, 3:07 PM EDT | Wind Advisory | DTX | 33 hr |
| Apr 17, 11:25 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Apr 17, 11:52 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 17, 2:24 PM EDT | Severe Thunderstorm Warning | DTX | 39 min |
| Apr 17, 2:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Apr 21, 2:43 PM EDT | Frost Advisory | DTX | 17 hr |
| Apr 23, 3:41 PM EDT | Freeze Watch | DTX | 12 hr |
| Apr 24, 3:36 AM EDT | Freeze Warning | DTX | 28 hr |
| Apr 25, 2:59 PM EDT | Frost Advisory | DTX | 17 hr |
| May 7, 4:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 7, 4:55 PM EDT | Tornado Watch | SPC | 6 hr |
| May 7, 6:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| May 7, 7:11 PM EDT | Special Weather Statement | DTX | 64 min |
| May 19, 9:23 PM EDT | Special Weather Statement | DTX | 67 min |
| May 26, 5:25 PM EDT | Special Weather Statement | DTX | 50 min |
| May 28, 2:27 PM EDT | Special Weather Statement | DTX | 63 min |
| May 29, 2:28 PM EDT | Special Weather Statement | DTX | 47 min |
| Jun 5, 11:38 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 5, 9:31 PM EDT | Special Weather Statement | DTX | 59 min |
| Jun 13, 7:30 PM EDT | Special Weather Statement | DTX | 60 min |
| Jun 16, 3:11 AM EDT | Excessive Heat Watch | DTX | 24 hr |
| Jun 16, 11:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 17, 3:30 AM EDT | Heat Advisory | DTX | 4 days |
| Jun 17, 8:21 PM EDT | Special Weather Statement | DTX | 54 min |
| Jun 17, 8:30 PM EDT | Severe Thunderstorm Warning | DTX | 60 min |
| Jun 17, 9:30 PM EDT | Severe Thunderstorm Warning | DTX | 37 min |
| Jun 19, 9:52 AM EDT | Special Weather Statement | DTX | 53 min |
| Jun 19, 1:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 19, 7:05 PM EDT | Special Weather Statement | DTX | 25 min |
| Jun 19, 7:33 PM EDT | Severe Thunderstorm Warning | DTX | 41 min |
| Jun 20, 12:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 21, 1:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 25, 5:37 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 25, 6:00 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 25, 7:28 AM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 25, 8:19 AM EDT | Special Weather Statement | DTX | 56 min |
| Jun 25, 11:25 AM EDT | Special Weather Statement | DTX | 95 min |
| Jun 29, 8:04 PM EDT | Special Weather Statement | DTX | 56 min |
| Jul 10, 2:20 AM EDT | Areal Flood Advisory | DTX | 14 hr |
| Jul 16, 12:11 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 12:35 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 16, 1:03 AM EDT | Special Weather Statement | DTX | 57 min |
| Jul 16, 1:38 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 7:31 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 6, 8:04 AM EDT | Tornado Watch | SPC | 9 hr |
| Aug 26, 12:53 PM EDT | Heat Advisory | DTX | 29 hr |
| Aug 27, 3:52 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Aug 27, 4:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 5:39 PM EDT | Severe Thunderstorm Warning | DTX | 81 min |
| Aug 30, 2:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Aug 30, 4:44 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 30, 6:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Sep 5, 2:35 PM EDT | Special Weather Statement | DTX | 40 min |
| Oct 9, 2:47 PM EDT | Frost Advisory | DTX | 18 hr |
| Oct 31, 2:31 AM EDT | Wind Advisory | DTX | 23 hr |
| Dec 4, 8:40 PM EST | Special Weather Statement | DTX | 80 min |
| Dec 12, 6:53 AM EST | Special Weather Statement | DTX | 82 min |
| Dec 14, 2:48 PM EST | Winter Weather Advisory | DTX | 18 hr |
| Dec 15, 8:37 PM EST | Dense Fog Advisory | DTX | 13 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 | 5 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 20 |
| Special Weather Statement | 18 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Weather Advisory | 5 |
| Heat | |
| Excessive Heat Watch | 1 |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 3 |
| 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 archive20232025
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.