Alert archive / Michigan / Keweenaw County
Weather alerts in Keweenaw County, Michigan, 2026
67 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Keweenaw County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 67
- Warnings
- 18
- Watches
- 13
- Advisories
- 29
- Busiest month
- January18 alerts
- Busiest day
- July 12, 20265 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Keweenaw County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 3 | 25% | 2 | 100% | 23 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 Marquette, MI: tornado warnings | 9 | 3 | 67% | 6 | 100% | 15 min |
| NWS Marquette, MI: severe thunderstorm warnings | 54 | 19 | 65% | 63 | 70% | 24 min |
| NWS Marquette, MI: flash flood warnings | 3 | 0 | 100% | 0 |
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 4, 3:26 AM EST | Winter Weather Advisory | MQT | 24 hr |
| Jan 10, 3:01 AM EST | Winter Weather Advisory | MQT | 24 hr |
| Jan 12, 2:46 PM EST | Winter Weather Advisory | MQT | 52 hr |
| Jan 15, 2:45 PM EST | Winter Weather Advisory | MQT | 52 hr |
| Jan 17, 1:42 PM EST | Winter Storm Watch | MQT | 12 hr |
| Jan 18, 1:51 AM EST | Winter Storm Warning | MQT | 53 hr |
| Jan 18, 1:51 AM EST | Winter Weather Advisory | MQT | 3 days |
| Jan 18, 1:57 AM EST | Cold Weather Advisory | MQT | 55 hr |
| Jan 20, 2:08 PM EST | Extreme Cold Watch | MQT | 24 hr |
| Jan 21, 1:44 AM EST | Winter Weather Advisory | MQT | 65 hr |
| Jan 21, 2:17 PM EST | Extreme Cold Warning | MQT | 68 hr |
| Jan 21, 2:22 PM EST | Extreme Cold Watch | MQT | 25 hr |
| Jan 22, 5:12 PM EST | Blizzard Warning | MQT | 9 hr |
| Jan 23, 2:31 AM EST | Winter Storm Warning | MQT | 24 hr |
| Jan 24, 2:30 AM EST | Winter Weather Advisory | MQT | 8 hr |
| Jan 24, 9:11 AM EST | Cold Weather Advisory | MQT | 4 hr |
| Jan 24, 2:47 PM EST | Cold Weather Advisory | MQT | 43 hr |
| Jan 27, 2:15 AM EST | Winter Weather Advisory | MQT | 65 hr |
| Feb 5, 1:48 PM EST | Winter Weather Advisory | MQT | 41 hr |
| Feb 16, 2:36 AM EST | Winter Storm Watch | MQT | 25 hr |
| Feb 17, 3:14 AM EST | Winter Storm Warning | MQT | 52 hr |
| Feb 17, 3:14 AM EST | Winter Weather Advisory | MQT | 58 hr |
| Feb 18, 5:16 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 19, 2:22 PM EST | Winter Storm Warning | MQT | 35 hr |
| Feb 19, 2:22 PM EST | Winter Weather Advisory | MQT | 3 days |
| Feb 23, 2:35 PM EST | Winter Weather Advisory | MQT | 26 hr |
| Feb 24, 2:19 PM EST | Winter Weather Advisory | MQT | 29 hr |
| Feb 26, 1:24 AM EST | High Wind Watch | MQT | 12 hr |
| Feb 26, 1:46 PM EST | Wind Advisory | MQT | 12 hr |
| Feb 27, 1:31 AM EST | High Wind Warning | MQT | 23 hr |
| Mar 4, 10:59 PM EST | Dense Fog Advisory | MQT | 15 hr |
| Mar 10, 2:04 AM EDT | Winter Weather Advisory | MQT | 42 hr |
| Mar 11, 2:27 PM EDT | Winter Storm Watch | MQT | 13 hr |
| Mar 12, 2:57 AM EDT | Winter Storm Warning | MQT | 41 hr |
| Mar 12, 1:39 PM EDT | Lakeshore Flood Advisory | MQT | 24 hr |
| Mar 13, 3:06 AM EDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 13, 3:54 AM EDT | Winter Storm Watch | MQT | 23 hr |
| Mar 14, 2:40 AM EDT | Winter Storm Warning | MQT | 11 hr |
| Mar 14, 2:04 PM EDT | Blizzard Warning | MQT | 60 hr |
| Mar 14, 2:36 PM EDT | Lakeshore Flood Warning | MQT | 65 hr |
| Mar 16, 9:54 AM EDT | Lakeshore Flood Advisory | MQT | 16 hr |
| Mar 16, 1:46 PM EDT | Wind Advisory | MQT | 12 hr |
| Mar 31, 3:43 PM EDT | Winter Storm Watch | MQT | 23 hr |
| Apr 1, 2:24 PM EDT | Winter Storm Warning | MQT | 42 hr |
| Apr 2, 1:04 AM EDT | Winter Storm Watch | MQT | 26 hr |
| Apr 3, 2:50 AM EDT | Winter Storm Warning | MQT | 35 hr |
| Apr 10, 11:05 AM EDT | Flood Watch | MQT | 8 days |
| Apr 14, 3:43 PM EDT | Dense Fog Advisory | MQT | 18 hr |
| Apr 15, 2:35 PM EDT | Dense Fog Advisory | MQT | 19 hr |
| Apr 22, 2:37 PM EDT | Flood Watch | MQT | 53 hr |
| May 20, 1:57 PM EDT | Frost Advisory | MQT | 19 hr |
| Jun 9, 10:01 PM EDT | Dense Fog Advisory | MQT | 16 hr |
| Jun 29, 4:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 5:02 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 11, 2:43 PM EDT | Heat Advisory | MQT | 30 hr |
| Jul 12, 7:35 AM EDT | Severe Thunderstorm Warning | MQT | 40 min |
| Jul 12, 8:36 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 12, 9:30 AM EDT | Severe Thunderstorm Warning | MQT | 45 min |
| Jul 12, 10:13 AM EDT | Severe Thunderstorm Warning | MQT | 62 min |
| Jul 12, 2:31 PM EDT | Extreme Heat Warning | MQT | 55 hr |
| Jul 20, 8:49 AM EDT | Severe Thunderstorm Warning | MQT | 56 min |
| Jul 27, 6:26 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 4:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 4:50 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 7, 6:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 1, 3:37 AM EDT | Dense Fog Advisory | MQT | 7 hr |
| Sep 14, 1:22 PM EDT | Wind Advisory | MQT | 31 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 | 2 |
| Mesoscale Discussion | 7 |
| Flooding | |
| Flood Watch | 2 |
| Winter | |
| Blizzard Warning | 2 |
| Winter Storm Warning | 8 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 14 |
| Heat | |
| Extreme Heat Warning | 1 |
| Heat Advisory | 1 |
| Cold | |
| Extreme Cold Warning | 1 |
| Extreme Cold Watch | 2 |
| Cold Weather Advisory | 3 |
| Frost Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
| Coast and beach | |
| Lakeshore Flood Warning | 1 |
| Lakeshore Flood Advisory | 2 |
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.