Alert archive / Michigan / Bay County
Weather alerts in Bay County, Michigan, 2025
87 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Bay County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 87
- Warnings
- 9
- Watches
- 8
- Advisories
- 28
- Busiest month
- July15 alerts
- Busiest day
- May 16, 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.
0 of 2 tornado warnings covering Bay County in 2025 had a tornado report inside them.
Bay County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 4 | 2 | 50% | 4 | 50% | 9 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 19, 12:02 PM EST | Cold Weather Advisory | DTX | 72 hr |
| Jan 26, 1:42 PM EST | Wind Advisory | DTX | 33 hr |
| Feb 6, 10:41 AM EST | Wind Advisory | DTX | 14 hr |
| Feb 8, 3:08 AM EST | Winter Weather Advisory | DTX | 21 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 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 17, 1:12 PM EST | Cold Weather Advisory | DTX | 20 hr |
| Feb 28, 2:55 AM EST | Wind Advisory | DTX | 14 hr |
| Mar 5, 2:48 PM EST | Wind Advisory | DTX | 21 hr |
| Mar 15, 12:13 AM EDT | Wind Advisory | DTX | 23 hr |
| Mar 15, 5:19 AM EDT | Special Weather Statement | DTX | 56 min |
| Mar 15, 6:21 AM EDT | Special Weather Statement | DTX | 39 min |
| Mar 28, 10:53 PM EDT | Dense Fog Advisory | DTX | 5 hr |
| Mar 30, 5:23 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 30, 7:08 PM EDT | Severe Thunderstorm Warning | DTX | 32 min |
| Mar 30, 7:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 1, 1:40 PM EDT | Winter Weather Advisory | DTX | 20 hr |
| Apr 2, 8:06 PM EDT | Severe Thunderstorm Warning | DTX | 24 min |
| Apr 2, 8:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 2, 9:24 PM EDT | Special Weather Statement | DTX | 66 min |
| Apr 18, 6:50 PM EDT | Special Weather Statement | DTX | 55 min |
| Apr 21, 10:14 AM EDT | Wind Advisory | DTX | 11 hr |
| Apr 29, 3:33 AM EDT | Wind Advisory | DTX | 14 hr |
| Apr 29, 3:48 PM EDT | Frost Advisory | DTX | 16 hr |
| May 8, 10:38 AM EDT | Freeze Warning | DTX | 22 hr |
| May 15, 10:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| May 15, 10:52 PM EDT | Special Weather Statement | DTX | 53 min |
| May 15, 11:27 PM EDT | Severe Thunderstorm Warning | DTX | 78 min |
| May 15, 11:28 PM EDT | Tornado Watch | SPC | 3 hr |
| May 15, 11:41 PM EDT | Tornado Warning | DTX | 64 min |
| May 16, 8:23 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 9, 6:09 PM EDT | Special Weather Statement | DTX | 51 min |
| Jun 9, 6:42 PM EDT | Mesoscale Discussion | SPC | 93 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 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 30, 12:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 30, 1:07 PM EDT | Special Weather Statement | DTX | 53 min |
| Jun 30, 4:52 PM EDT | Special Weather Statement | DTX | 23 min |
| Jul 2, 4:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 6, 2:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jul 6, 3:04 PM EDT | Special Weather Statement | DTX | 26 min |
| Jul 6, 5:07 PM EDT | Special Weather Statement | DTX | 38 min |
| Jul 9, 2:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 9, 7:11 PM EDT | Special Weather Statement | DTX | 34 min |
| Jul 12, 10:06 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 8:00 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jul 23, 2:46 AM EDT | Heat Advisory | DTX | 41 hr |
| Jul 24, 2:41 PM EDT | Special Weather Statement | DTX | 64 min |
| Jul 28, 3:02 AM EDT | Heat Advisory | DTX | 18 hr |
| Jul 28, 6:45 PM EDT | Special Weather Statement | DTX | 60 min |
| Jul 28, 7:18 PM EDT | Severe Thunderstorm Warning | DTX | 42 min |
| Jul 28, 7:54 PM EDT | Special Weather Statement | DTX | 66 min |
| Jul 30, 3:48 PM EDT | Beach Hazards Statement | DTX | 32 hr |
| Aug 6, 5:15 PM EDT | Special Weather Statement | DTX | 60 min |
| Aug 8, 6:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Aug 12, 10:24 AM EDT | Special Weather Statement | DTX | 66 min |
| Aug 12, 5:31 PM EDT | Special Weather Statement | DTX | 59 min |
| Aug 12, 5:34 PM EDT | Tornado Warning | DTX | 41 min |
| Aug 12, 5:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 6:26 PM EDT | Areal Flood Advisory | DTX | 3 hr |
| Aug 16, 2:30 PM EDT | Beach Hazards Statement | DTX | 33 hr |
| Aug 23, 3:37 PM EDT | Special Weather Statement | DTX | 38 min |
| Sep 18, 4:35 PM EDT | Special Weather Statement | DTX | 55 min |
| Sep 22, 1:31 AM EDT | Special Weather Statement | DTX | 89 min |
| Sep 22, 1:50 AM EDT | Special Weather Statement | DTX | 55 min |
| Sep 30, 3:33 AM EDT | Beach Hazards Statement | DTX | 30 hr |
| Oct 8, 11:12 AM EDT | Frost Advisory | DTX | 22 hr |
| Oct 9, 11:31 AM EDT | Frost Advisory | DTX | 21 hr |
| Oct 21, 4:10 PM EDT | Special Weather Statement | DTX | 65 min |
| Nov 9, 3:51 AM EST | Winter Weather Advisory | DTX | 23 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 9, 2:52 AM EST | Winter Weather Advisory | DTX | 37 hr |
| Dec 20, 7:47 PM EST | Wind Advisory | DTX | 8 hr |
| Dec 25, 10:54 AM EST | Winter Weather Advisory | DTX | 29 hr |
| Dec 26, 5:40 AM EST | Mesoscale Discussion | SPC | 6 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 | 4 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 22 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 8 |
| Heat | |
| Extreme Heat Watch | 1 |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 1 |
| Cold Weather Advisory | 2 |
| Frost Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 10 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Beach Hazards Statement | 3 |
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.