Alert archive / Michigan / Ontonagon County
Weather alerts in Ontonagon County, Michigan, 2025
89 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Ontonagon County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 89
- Warnings
- 27
- Watches
- 9
- Advisories
- 38
- Busiest month
- June14 alerts
- Busiest day
- June 21, 20259 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Ontonagon County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 12 | 4 | 67% | 1 | 0% | |
| Flash flood warnings | 0 | 1 | 0% |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Marquette, MI: severe thunderstorm warnings | 49 | 14 | 71% | 33 | 67% | 23 min |
| NWS Marquette, MI: flash flood warnings | 3 | 3 | 0% | 16 | 63% | 173 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 9, 2:36 PM EST | Winter Weather Advisory | MQT | 40 hr |
| Jan 11, 3:06 PM EST | Winter Weather Advisory | MQT | 3 days |
| Jan 13, 3:17 AM EST | Winter Storm Warning | MQT | 28 hr |
| Jan 17, 2:51 PM EST | Cold Weather Advisory | MQT | 4 days |
| Jan 18, 4:09 AM EST | Winter Weather Advisory | MQT | 3 days |
| Jan 19, 4:26 AM EST | Extreme Cold Warning | MQT | 57 hr |
| Jan 21, 4:22 AM EST | Cold Weather Advisory | MQT | 21 hr |
| Jan 24, 2:36 PM EST | Winter Weather Advisory | MQT | 40 hr |
| Jan 27, 3:01 PM EST | Winter Weather Advisory | MQT | 52 hr |
| Feb 5, 4:17 AM EST | Winter Storm Watch | MQT | 11 hr |
| Feb 5, 3:14 PM EST | Blizzard Warning | MQT | 34 hr |
| Feb 14, 2:09 AM EST | Winter Weather Advisory | MQT | 4 days |
| Feb 15, 3:05 AM EST | Winter Storm Warning | MQT | 4 days |
| Feb 17, 2:47 PM EST | Cold Weather Advisory | MQT | 19 hr |
| Feb 27, 2:41 PM EST | Winter Weather Advisory | MQT | 34 hr |
| Mar 3, 2:44 PM EST | Winter Storm Watch | MQT | 13 hr |
| Mar 4, 3:38 AM EST | Winter Storm Warning | MQT | 44 hr |
| Mar 4, 3:44 AM EST | Lakeshore Flood Advisory | MQT | 51 hr |
| Mar 5, 4:18 AM EST | Blizzard Warning | MQT | 21 hr |
| Mar 17, 3:25 PM EDT | Winter Storm Watch | MQT | 24 hr |
| Mar 22, 4:03 AM EDT | Winter Weather Advisory | MQT | 58 hr |
| Mar 27, 3:44 AM EDT | Winter Storm Watch | MQT | 24 hr |
| Mar 27, 3:09 PM EDT | Winter Storm Warning | MQT | 4 days |
| Mar 27, 3:09 PM EDT | Winter Weather Advisory | MQT | 41 hr |
| Mar 30, 3:07 PM EDT | Mesoscale Discussion | SPC | 5 hr |
| Apr 6, 3:05 AM EDT | Winter Weather Advisory | MQT | 35 hr |
| Apr 11, 6:44 AM EDT | Freezing Fog Advisory | MQT | 3 hr |
| Apr 13, 3:31 PM EDT | Winter Weather Advisory | MQT | 46 hr |
| Apr 14, 4:03 AM EDT | Winter Storm Warning | MQT | 30 hr |
| May 11, 1:56 PM EDT | Red Flag Warning | MQT | 9 hr |
| May 12, 9:23 AM EDT | Red Flag Warning | MQT | 13 hr |
| May 15, 7:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| May 15, 8:47 PM EDT | Special Weather Statement | MQT | 43 min |
| May 21, 3:10 AM EDT | Frost Advisory | MQT | 31 hr |
| May 23, 2:24 PM EDT | Frost Advisory | MQT | 19 hr |
| May 24, 2:57 PM EDT | Frost Advisory | MQT | 18 hr |
| May 31, 2:11 PM EDT | Frost Advisory | MQT | 19 hr |
| Jun 1, 4:25 PM EDT | Red Flag Warning | MQT | 30 hr |
| Jun 21, 2:09 AM EDT | Severe Thunderstorm Warning | MQT | 51 min |
| Jun 21, 2:34 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 21, 2:55 AM EDT | Severe Thunderstorm Warning | MQT | 31 min |
| Jun 21, 2:59 AM EDT | Severe Thunderstorm Warning | MQT | 35 min |
| Jun 21, 4:25 AM EDT | Severe Thunderstorm Warning | MQT | 50 min |
| Jun 21, 5:21 AM EDT | Severe Thunderstorm Warning | MQT | 39 min |
| Jun 21, 5:53 AM EDT | Severe Thunderstorm Warning | MQT | 67 min |
| Jun 21, 6:00 AM EDT | Severe Thunderstorm Warning | MQT | 60 min |
| Jun 21, 10:08 AM EDT | Heat Advisory | MQT | 34 hr |
| Jun 29, 6:40 PM EDT | Special Weather Statement | MQT | 50 min |
| Jun 29, 7:24 PM EDT | Special Weather Statement | MQT | 51 min |
| Jun 29, 7:52 PM EDT | Special Weather Statement | MQT | 38 min |
| Jun 29, 8:37 PM EDT | Areal Flood Advisory | MQT | 2 hr |
| Jul 11, 8:52 PM EDT | Areal Flood Advisory | MQT | 2 hr |
| Jul 15, 9:30 AM EDT | Special Weather Statement | MQT | 45 min |
| Jul 15, 3:00 PM EDT | Special Weather Statement | MQT | 45 min |
| Jul 15, 3:23 PM EDT | Severe Thunderstorm Warning | MQT | 52 min |
| Jul 15, 3:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 15, 4:53 PM EDT | Severe Thunderstorm Warning | MQT | 20 min |
| Jul 15, 6:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 15, 8:25 PM EDT | Severe Thunderstorm Warning | MQT | 50 min |
| Jul 15, 9:06 PM EDT | Areal Flood Advisory | MQT | 3 hr |
| Jul 15, 9:48 PM EDT | Areal Flood Advisory | MQT | 5 hr |
| Jul 23, 7:33 AM EDT | Areal Flood Advisory | MQT | 3 hr |
| Jul 23, 2:29 PM EDT | Flood Watch | MQT | 7 hr |
| Aug 8, 7:26 PM EDT | Severe Thunderstorm Warning | MQT | 64 min |
| Aug 8, 8:17 PM EDT | Severe Thunderstorm Warning | MQT | 58 min |
| Aug 8, 9:12 PM EDT | Special Weather Statement | MQT | 33 min |
| Aug 22, 12:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 22, 4:40 PM EDT | Special Weather Statement | MQT | 50 min |
| Aug 28, 3:29 AM EDT | Frost Advisory | MQT | 30 hr |
| Sep 23, 1:29 AM EDT | Dense Fog Advisory | MQT | 10 hr |
| Oct 6, 1:26 PM EDT | Freeze Watch | MQT | 14 hr |
| Oct 7, 3:06 AM EDT | Freeze Warning | MQT | 31 hr |
| Nov 7, 2:40 PM EST | Winter Weather Advisory | MQT | 3 days |
| Nov 24, 1:48 AM EST | Winter Storm Watch | MQT | 36 hr |
| Nov 25, 2:33 AM EST | Winter Storm Warning | MQT | 64 hr |
| Nov 25, 2:58 AM EST | Lakeshore Flood Advisory | MQT | 70 hr |
| Nov 25, 2:06 PM EST | Blizzard Warning | MQT | 53 hr |
| Nov 25, 6:32 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 26, 5:42 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 27, 1:36 AM EST | Winter Weather Advisory | MQT | 41 hr |
| Nov 28, 2:37 PM EST | Winter Weather Advisory | MQT | 46 hr |
| Dec 12, 2:20 AM EST | Winter Weather Advisory | MQT | 56 hr |
| Dec 17, 3:00 PM EST | Winter Weather Advisory | MQT | 46 hr |
| Dec 20, 2:54 AM EST | Winter Weather Advisory | MQT | 28 hr |
| Dec 25, 2:33 AM EST | Winter Weather Advisory | MQT | 35 hr |
| Dec 26, 2:41 PM EST | Winter Storm Watch | MQT | 24 hr |
| Dec 27, 3:01 PM EST | Blizzard Warning | MQT | 46 hr |
| Dec 27, 3:06 PM EST | Lakeshore Flood Advisory | MQT | 48 hr |
| Dec 30, 12:35 PM EST | Winter Weather Advisory | MQT | 42 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 | 12 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 7 |
| Special Weather Statement | 8 |
| Flooding | |
| Flood Watch | 1 |
| Areal Flood Advisory | 5 |
| Winter | |
| Blizzard Warning | 4 |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 19 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Extreme Cold Warning | 1 |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Cold Weather Advisory | 3 |
| Frost Advisory | 5 |
| Fire | |
| Red Flag Warning | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Freezing Fog Advisory | 1 |
| Coast and beach | |
| Lakeshore Flood Advisory | 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.