Alert archive / Michigan / Ontonagon County
Weather alerts in Ontonagon County, Michigan, 2023
62 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 62
- Warnings
- 11
- Watches
- 8
- Advisories
- 26
- Busiest month
- April13 alerts
- Busiest day
- July 27, 20238 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, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 3 | 25% | 3 | 100% | 10 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Marquette, MI: severe thunderstorm warnings | 34 | 16 | 53% | 54 | 63% | 22 min |
| NWS Marquette, MI: flash flood warnings | 1 | 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 2, 2:22 PM EST | Winter Weather Advisory | MQT | 59 hr |
| Jan 15, 4:08 PM EST | Winter Weather Advisory | MQT | 21 hr |
| Jan 16, 2:53 PM EST | Winter Weather Advisory | MQT | 19 hr |
| Jan 18, 3:58 PM EST | Winter Weather Advisory | MQT | 30 hr |
| Jan 26, 2:55 PM EST | Winter Weather Advisory | MQT | 40 hr |
| Jan 29, 3:20 PM EST | Winter Weather Advisory | MQT | 34 hr |
| Jan 30, 3:20 PM EST | Wind Chill Advisory | MQT | 20 hr |
| Feb 19, 3:09 PM EST | Winter Weather Advisory | MQT | 43 hr |
| Feb 21, 2:50 PM EST | Winter Storm Watch | MQT | 25 hr |
| Feb 22, 4:14 AM EST | Winter Storm Warning | MQT | 45 hr |
| Feb 23, 6:06 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 26, 3:24 PM EST | Winter Weather Advisory | MQT | 34 hr |
| Feb 28, 2:20 PM EST | Winter Weather Advisory | MQT | 39 hr |
| Mar 11, 7:35 AM EST | Winter Weather Advisory | MQT | 62 hr |
| Mar 15, 3:50 AM EDT | Winter Storm Watch | MQT | 49 hr |
| Mar 16, 4:58 AM EDT | Winter Storm Warning | MQT | 57 hr |
| Mar 30, 4:54 AM EDT | Winter Storm Watch | MQT | 32 hr |
| Mar 30, 4:54 AM EDT | Winter Weather Advisory | MQT | 30 hr |
| Mar 31, 4:14 AM EDT | Lakeshore Flood Advisory | MQT | 32 hr |
| Mar 31, 1:12 PM EDT | Winter Weather Advisory | MQT | 19 hr |
| Apr 3, 3:27 PM EDT | Winter Weather Advisory | MQT | 41 hr |
| Apr 5, 3:49 AM EDT | Wind Advisory | MQT | 35 hr |
| Apr 12, 10:59 AM EDT | Flood Watch | MQT | 47 hr |
| Apr 12, 9:37 PM EDT | Areal Flood Warning | MQT | 18 hr |
| Apr 13, 11:10 AM EDT | River Flood Warning | MQT | 5 days |
| Apr 15, 3:44 AM EDT | Winter Storm Watch | MQT | 24 hr |
| Apr 15, 3:11 PM EDT | Flood Watch | MQT | 38 hr |
| Apr 15, 7:17 PM EDT | Special Weather Statement | MQT | 58 min |
| Apr 16, 4:00 AM EDT | Winter Storm Warning | MQT | 46 hr |
| Apr 16, 3:12 PM EDT | Lakeshore Flood Advisory | MQT | 20 hr |
| Apr 29, 4:57 AM EDT | Winter Weather Advisory | MQT | 30 hr |
| Apr 29, 8:22 PM EDT | Flood Watch | MQT | 6 days |
| Apr 30, 6:05 AM EDT | Winter Storm Warning | MQT | 56 hr |
| Jun 1, 1:40 PM EDT | Special Weather Statement | MQT | 35 min |
| Jun 1, 2:14 PM EDT | Special Weather Statement | MQT | 31 min |
| Jun 1, 4:55 PM EDT | Special Weather Statement | MQT | 50 min |
| Jun 2, 7:46 AM EDT | Special Weather Statement | MQT | 44 min |
| Jun 2, 8:30 AM EDT | Special Weather Statement | MQT | 30 min |
| Jun 7, 3:44 AM EDT | Frost Advisory | MQT | 28 hr |
| Jun 11, 7:20 PM EDT | Frost Advisory | MQT | 13 hr |
| Jun 29, 1:10 AM EDT | Special Weather Statement | MQT | 50 min |
| Jun 29, 9:25 PM EDT | Special Weather Statement | MQT | 35 min |
| Jun 29, 9:54 PM EDT | Special Weather Statement | MQT | 36 min |
| Jul 14, 9:21 PM EDT | Special Weather Statement | MQT | 24 min |
| Jul 22, 3:10 PM EDT | Special Weather Statement | MQT | 35 min |
| Jul 27, 7:04 AM EDT | Special Weather Statement | MQT | 41 min |
| Jul 27, 7:44 AM EDT | Special Weather Statement | MQT | 31 min |
| Jul 27, 5:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 27, 5:51 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 27, 6:57 PM EDT | Severe Thunderstorm Warning | MQT | 33 min |
| Jul 27, 7:16 PM EDT | Severe Thunderstorm Warning | MQT | 29 min |
| Jul 27, 7:31 PM EDT | Severe Thunderstorm Warning | MQT | 29 min |
| Jul 27, 7:58 PM EDT | Severe Thunderstorm Warning | MQT | 32 min |
| Aug 22, 7:08 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 5, 9:42 PM EDT | Special Weather Statement | MQT | 33 min |
| Oct 29, 9:23 PM EDT | Winter Weather Advisory | MQT | 25 hr |
| Oct 30, 3:10 PM EDT | Winter Weather Advisory | MQT | 26 hr |
| Nov 7, 3:16 PM EST | Winter Weather Advisory | MQT | 18 hr |
| Nov 16, 4:06 AM EST | Wind Advisory | MQT | 18 hr |
| Nov 26, 4:08 AM EST | Winter Storm Warning | MQT | 51 hr |
| Dec 9, 3:41 AM EST | Winter Weather Advisory | MQT | 25 hr |
| Dec 17, 4:45 AM EST | Winter Weather Advisory | MQT | 38 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 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 14 |
| Flooding | |
| Areal Flood Warning | 1 |
| River Flood Warning | 1 |
| Flood Watch | 3 |
| Winter | |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 19 |
| Cold | |
| Frost Advisory | 2 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 2 |
| Coast and beach | |
| Lakeshore Flood Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.