Alert archive / Michigan / Ontonagon County
Weather alerts in Ontonagon County, Michigan, 2024
63 weather alerts in 2024, 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 2024. Tap one for its archive.
- Alerts
- 63
- Warnings
- 21
- Watches
- 7
- Advisories
- 24
- Busiest month
- May11 alerts
- Busiest day
- May 18, 20249 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, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 14 | 2 | 86% | 1 | 100% | 14 min |
| Flash flood warnings | 1 | 1 | 0% | 1 | 100% | 124 min |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Marquette, MI: tornado warnings | 1 | 0 | 100% | 0 | ||
| NWS Marquette, MI: severe thunderstorm warnings | 57 | 11 | 81% | 70 | 46% | 18 min |
| NWS Marquette, MI: flash flood warnings | 2 | 1 | 50% | 1 | 100% | 124 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 11, 4:11 AM EST | Winter Storm Watch | MQT | 11 hr |
| Jan 11, 3:38 PM EST | Winter Storm Warning | MQT | 51 hr |
| Jan 12, 10:15 PM EST | Winter Weather Advisory | MQT | 5 days |
| Jan 15, 2:40 PM EST | Wind Chill Advisory | MQT | 22 hr |
| Jan 16, 2:17 PM EST | Winter Weather Advisory | MQT | 41 hr |
| Jan 18, 5:03 PM EST | Winter Weather Advisory | MQT | 44 hr |
| Feb 15, 3:30 PM EST | Winter Weather Advisory | MQT | 48 hr |
| Feb 26, 3:18 PM EST | Winter Weather Advisory | MQT | 68 hr |
| Mar 16, 3:37 AM EDT | Winter Weather Advisory | MQT | 46 hr |
| Mar 23, 4:11 AM EDT | Winter Storm Watch | MQT | 24 hr |
| Mar 24, 4:23 AM EDT | Winter Weather Advisory | MQT | 34 hr |
| Mar 26, 3:36 PM EDT | Winter Weather Advisory | MQT | 40 hr |
| Apr 1, 3:02 PM EDT | Winter Storm Watch | MQT | 14 hr |
| Apr 2, 5:30 AM EDT | Winter Storm Warning | MQT | 51 hr |
| Apr 2, 5:36 AM EDT | Lakeshore Flood Advisory | MQT | 38 hr |
| May 18, 4:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| May 18, 4:26 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 18, 5:39 PM EDT | Special Weather Statement | MQT | 36 min |
| May 18, 5:48 PM EDT | Severe Thunderstorm Warning | MQT | 27 min |
| May 18, 5:57 PM EDT | Severe Thunderstorm Warning | MQT | 33 min |
| May 18, 6:06 PM EDT | Severe Thunderstorm Warning | MQT | 24 min |
| May 18, 6:17 PM EDT | Severe Thunderstorm Warning | MQT | 28 min |
| May 18, 6:28 PM EDT | Severe Thunderstorm Warning | MQT | 32 min |
| May 18, 6:31 PM EDT | Severe Thunderstorm Warning | MQT | 8 min |
| May 21, 3:03 PM EDT | Wind Advisory | MQT | 31 hr |
| May 29, 2:56 PM EDT | Frost Advisory | MQT | 19 hr |
| Jun 5, 4:24 PM EDT | Special Weather Statement | MQT | 21 min |
| Jun 5, 5:24 PM EDT | Special Weather Statement | MQT | 36 min |
| Jun 5, 5:36 PM EDT | Special Weather Statement | MQT | 24 min |
| Jun 10, 2:31 PM EDT | Frost Advisory | MQT | 8 min |
| Jun 10, 2:39 PM EDT | Frost Advisory | MQT | 17 hr |
| Jun 17, 10:12 AM EDT | Severe Thunderstorm Warning | MQT | 33 min |
| Jun 17, 10:19 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 17, 10:47 AM EDT | Severe Thunderstorm Warning | MQT | 28 min |
| Jun 19, 12:04 AM EDT | Areal Flood Advisory | MQT | 3 hr |
| Jun 19, 12:47 AM EDT | Severe Thunderstorm Warning | MQT | 43 min |
| Jun 19, 12:56 AM EDT | Flash Flood Warning | MQT | 4 hr |
| Jul 15, 4:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 15, 4:54 PM EDT | Special Weather Statement | MQT | 36 min |
| Jul 15, 6:19 PM EDT | Severe Thunderstorm Warning | MQT | 27 min |
| Aug 26, 11:53 PM EDT | Severe Thunderstorm Warning | MQT | 52 min |
| Aug 27, 12:42 AM EDT | Severe Thunderstorm Warning | MQT | 33 min |
| Aug 27, 1:13 AM EDT | Severe Thunderstorm Warning | MQT | 22 min |
| Aug 27, 1:33 AM EDT | Severe Thunderstorm Warning | MQT | 27 min |
| Aug 27, 1:39 AM EDT | Special Weather Statement | MQT | 36 min |
| Aug 27, 5:06 AM EDT | Special Weather Statement | MQT | 24 min |
| Aug 27, 5:28 AM EDT | Special Weather Statement | MQT | 32 min |
| Sep 16, 2:16 PM EDT | Special Weather Statement | MQT | 59 min |
| Oct 3, 3:04 PM EDT | Frost Advisory | MQT | 19 hr |
| Oct 4, 5:03 PM EDT | Red Flag Warning | MQT | 27 hr |
| Oct 6, 1:55 PM EDT | Frost Advisory | MQT | 20 hr |
| Nov 10, 2:46 AM EST | Wind Advisory | MQT | 40 hr |
| Nov 24, 2:19 PM EST | Winter Weather Advisory | MQT | 63 hr |
| Nov 27, 2:31 PM EST | Winter Storm Watch | MQT | 14 hr |
| Nov 28, 4:24 AM EST | Winter Storm Warning | MQT | 4 days |
| Nov 28, 7:46 AM EST | Winter Weather Advisory | MQT | 5 days |
| Dec 2, 3:06 PM EST | Winter Weather Advisory | MQT | 22 hr |
| Dec 3, 3:14 PM EST | Winter Storm Warning | MQT | 55 hr |
| Dec 9, 2:53 PM EST | Winter Storm Watch | MQT | 13 hr |
| Dec 10, 3:59 AM EST | Winter Storm Warning | MQT | 3 days |
| Dec 10, 2:33 PM EST | Winter Weather Advisory | MQT | 62 hr |
| Dec 17, 1:59 PM EST | Winter Weather Advisory | MQT | 35 hr |
| Dec 18, 2:19 PM EST | Winter Weather Advisory | MQT | 41 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 | 14 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 9 |
| Flooding | |
| Flash Flood Warning | 1 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 5 |
| Winter Weather Advisory | 14 |
| Cold | |
| Frost Advisory | 5 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 1 |
| Coast and beach | |
| Lakeshore Flood Advisory | 1 |
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.