Alert archive / Michigan / Bay County
Weather alerts in Bay County, Michigan, 2026
91 weather alerts in 2026, 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 2026. Tap one for its archive.
- Alerts
- 91
- Warnings
- 21
- Watches
- 14
- Advisories
- 22
- Busiest month
- April21 alerts
- Busiest day
- April 14, 20268 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 1 tornado warnings covering Bay County in 2026 had a tornado report inside them.
Bay County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 13 | 9 | 31% | 6 | 100% | 28 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Detroit, MI: tornado warnings | 26 | 8 | 69% | 11 | 82% | 23 min |
| NWS Detroit, MI: severe thunderstorm warnings | 130 | 89 | 32% | 203 | 88% | 23 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
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 5, 1:41 PM EST | Winter Weather Advisory | DTX | 23 hr |
| Jan 9, 2:28 AM EST | Wind Advisory | DTX | 14 hr |
| Jan 18, 2:45 PM EST | Winter Weather Advisory | DTX | 43 hr |
| Jan 20, 2:29 PM EST | Winter Weather Advisory | DTX | 23 hr |
| Jan 21, 3:00 PM EST | Extreme Cold Watch | DTX | 12 hr |
| Jan 22, 2:56 AM EST | Cold Weather Advisory | DTX | 55 hr |
| Jan 25, 3:09 PM EST | Cold Weather Advisory | DTX | 43 hr |
| Jan 29, 2:17 PM EST | Cold Weather Advisory | DTX | 20 hr |
| Feb 6, 2:30 AM EST | Cold Weather Advisory | DTX | 34 hr |
| Feb 17, 9:59 AM EST | Dense Fog Advisory | DTX | 4 hr |
| Feb 18, 9:32 PM EST | Dense Fog Advisory | DTX | 14 hr |
| Mar 6, 2:00 PM EST | Special Weather Statement | DTX | 60 min |
| Mar 10, 2:38 AM EDT | Winter Weather Advisory | DTX | 29 hr |
| Mar 10, 9:58 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 12, 2:27 AM EDT | High Wind Watch | DTX | 11 hr |
| Mar 12, 1:25 PM EDT | High Wind Warning | DTX | 35 hr |
| Mar 12, 8:13 PM EDT | Winter Weather Advisory | DTX | 15 hr |
| Mar 14, 1:03 PM EDT | Winter Weather Advisory | DTX | 21 hr |
| Mar 14, 1:35 PM EDT | Wind Advisory | DTX | 62 hr |
| Mar 30, 11:49 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 30, 11:51 PM EDT | Special Weather Statement | DTX | 39 min |
| Mar 31, 2:35 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Mar 31, 4:12 AM EDT | Special Weather Statement | DTX | 18 min |
| Apr 3, 10:12 PM EDT | River Flood Warning | DTX | 7 days |
| Apr 4, 1:30 PM EDT | Flood Watch | DTX | 11 hr |
| Apr 13, 9:41 PM EDT | Severe Thunderstorm Warning | DTX | 64 min |
| Apr 13, 10:44 PM EDT | Severe Thunderstorm Warning | DTX | 91 min |
| Apr 13, 11:03 PM EDT | Special Weather Statement | DTX | 27 min |
| Apr 13, 11:12 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 14, 12:43 AM EDT | Mesoscale Discussion | SPC | 92 min |
| Apr 14, 2:07 AM EDT | Special Weather Statement | DTX | 38 min |
| Apr 14, 5:18 AM EDT | Special Weather Statement | DTX | 57 min |
| Apr 14, 9:41 AM EDT | Flood Watch | DTX | 59 hr |
| Apr 14, 8:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Apr 14, 8:54 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 15, 10:44 AM EDT | River Flood Warning | DTX | 6 days |
| Apr 16, 6:54 PM EDT | Special Weather Statement | DTX | 66 min |
| Apr 17, 2:46 AM EDT | Dense Fog Advisory | DTX | 7 hr |
| Apr 24, 2:22 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 24, 3:29 PM EDT | Special Weather Statement | DTX | 61 min |
| Apr 24, 3:47 PM EDT | Severe Thunderstorm Warning | DTX | 31 min |
| Apr 27, 6:32 PM EDT | Special Weather Statement | DTX | 58 min |
| Apr 30, 12:47 PM EDT | Frost Advisory | DTX | 19 hr |
| Apr 30, 12:47 PM EDT | Freeze Watch | DTX | 24 hr |
| May 1, 12:58 PM EDT | Freeze Warning | DTX | 18 hr |
| May 2, 1:27 PM EDT | Frost Advisory | DTX | 18 hr |
| May 4, 2:45 PM EDT | Red Flag Warning | DTX | 4 hr |
| May 6, 1:22 PM EDT | Frost Advisory | DTX | 19 hr |
| May 10, 12:49 PM EDT | Frost Advisory | DTX | 18 hr |
| May 11, 2:05 PM EDT | Freeze Warning | DTX | 18 hr |
| May 17, 3:32 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 4:56 PM EDT | Severe Thunderstorm Warning | DTX | 53 min |
| May 17, 5:01 PM EDT | Severe Thunderstorm Warning | DTX | 48 min |
| May 17, 6:22 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 18, 12:59 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 18, 3:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| May 18, 3:33 PM EDT | Severe Thunderstorm Warning | DTX | 57 min |
| May 22, 4:02 AM EDT | Beach Hazards Statement | DTX | 42 hr |
| Jun 10, 7:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 10, 7:40 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 10, 8:21 PM EDT | Severe Thunderstorm Warning | DTX | 54 min |
| Jun 10, 8:36 PM EDT | Tornado Warning | DTX | 39 min |
| Jun 11, 8:08 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 16, 1:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 16, 3:28 PM EDT | Special Weather Statement | DTX | 47 min |
| Jun 16, 3:49 PM EDT | Severe Thunderstorm Warning | DTX | 56 min |
| Jun 16, 7:02 PM EDT | Areal Flood Advisory | DTX | 3 hr |
| Jun 25, 2:47 PM EDT | Special Weather Statement | DTX | 28 min |
| Jun 25, 2:59 PM EDT | Severe Thunderstorm Warning | DTX | 31 min |
| Jun 25, 4:14 PM EDT | Special Weather Statement | DTX | 46 min |
| Jun 25, 4:24 PM EDT | Severe Thunderstorm Warning | DTX | 52 min |
| Jun 28, 1:28 PM EDT | Extreme Heat Watch | DTX | 24 hr |
| Jun 29, 1:57 PM EDT | Extreme Heat Warning | DTX | 4 days |
| Jul 1, 2:02 PM EDT | Severe Thunderstorm Warning | DTX | 32 min |
| Jul 2, 8:03 PM EDT | Heat Advisory | DTX | 23 hr |
| Jul 9, 6:21 PM EDT | Special Weather Statement | DTX | 24 min |
| Jul 13, 1:50 AM EDT | Extreme Heat Watch | DTX | 11 hr |
| Jul 13, 12:54 PM EDT | Heat Advisory | DTX | 55 hr |
| Jul 18, 12:17 PM EDT | Severe Thunderstorm Warning | DTX | 43 min |
| Jul 21, 1:03 PM EDT | Severe Thunderstorm Warning | DTX | 57 min |
| Jul 27, 9:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 27, 10:47 PM EDT | Special Weather Statement | DTX | 58 min |
| Jul 27, 11:50 PM EDT | Special Weather Statement | DTX | 55 min |
| Aug 12, 3:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 18, 5:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 22, 12:20 PM EDT | Special Weather Statement | DTX | 55 min |
| Aug 22, 1:17 PM EDT | Special Weather Statement | DTX | 73 min |
| Sep 2, 6:37 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Sep 2, 2:39 PM EDT | Special Weather Statement | DTX | 36 min |
| Sep 2, 3:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Sep 3, 1:59 PM EDT | Severe Thunderstorm Watch | SPC | 3 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 | 13 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 18 |
| Flooding | |
| River Flood Warning | 2 |
| Flood Watch | 2 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Weather Advisory | 6 |
| Heat | |
| Extreme Heat Warning | 1 |
| Extreme Heat Watch | 2 |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 2 |
| Extreme Cold Watch | 1 |
| Freeze Watch | 1 |
| Cold Weather Advisory | 4 |
| Frost Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Coast and beach | |
| Beach Hazards Statement | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
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.