Alert archive / Michigan / Mackinac County
Weather alerts in Mackinac County, Michigan, 2020
88 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Mackinac County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 88
- Warnings
- 16
- Watches
- 4
- Advisories
- 46
- Busiest month
- January17 alerts
- Busiest day
- July 18, 20204 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Mackinac County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 0 | 0 | ||||
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Gaylord, MI: tornado warnings | 2 | 0 | 100% | 0 | ||
| NWS Gaylord, MI: severe thunderstorm warnings | 64 | 20 | 69% | 59 | 59% | 19 min |
| NWS Gaylord, MI: flash flood warnings | 15 | 4 | 73% | 6 | 83% | 37 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 4, 2:19 AM EST | Winter Weather Advisory | APX | 22 hr |
| Jan 5, 3:03 AM EST | Winter Weather Advisory | APX | 24 hr |
| Jan 5, 3:05 AM EST | Lakeshore Flood Advisory | APX | 43 hr |
| Jan 7, 9:43 AM EST | Snow Squall Warning | APX | 92 min |
| Jan 8, 2:07 PM EST | Lakeshore Flood Advisory | APX | 23 min |
| Jan 8, 2:30 PM EST | Lakeshore Flood Warning | APX | 32 hr |
| Jan 8, 4:00 PM EST | Winter Weather Advisory | APX | 33 hr |
| Jan 9, 3:43 PM EST | Winter Storm Watch | APX | 45 hr |
| Jan 10, 3:06 PM EST | Winter Storm Warning | APX | 38 hr |
| Jan 10, 3:10 PM EST | Lakeshore Flood Warning | APX | 36 hr |
| Jan 11, 12:30 PM EST | Winter Weather Advisory | APX | 10 hr |
| Jan 16, 4:14 PM EST | Winter Storm Watch | APX | 11 hr |
| Jan 17, 3:29 AM EST | Winter Weather Advisory | APX | 54 hr |
| Jan 17, 2:47 PM EST | Lakeshore Flood Advisory | APX | 22 hr |
| Jan 18, 2:27 AM EST | Winter Storm Warning | APX | 19 hr |
| Jan 21, 10:43 AM EST | Lakeshore Flood Advisory | APX | 30 hr |
| Jan 22, 3:23 AM EST | Winter Weather Advisory | APX | 18 hr |
| Feb 9, 3:15 AM EST | Winter Weather Advisory | APX | 21 hr |
| Feb 14, 10:14 AM EST | Lakeshore Flood Warning | APX | 32 hr |
| Feb 17, 3:43 AM EST | Winter Weather Advisory | APX | 35 hr |
| Feb 21, 3:41 AM EST | Lakeshore Flood Advisory | APX | 21 hr |
| Feb 27, 3:27 AM EST | Winter Weather Advisory | APX | 48 hr |
| Mar 4, 3:01 PM EST | Winter Weather Advisory | APX | 23 hr |
| Mar 5, 1:49 PM EST | Winter Storm Warning | APX | 15 hr |
| Mar 5, 1:49 PM EST | Winter Weather Advisory | APX | 20 hr |
| Mar 9, 9:33 PM EDT | Winter Weather Advisory | APX | 8 hr |
| Mar 12, 3:30 PM EDT | Lakeshore Flood Advisory | APX | 31 hr |
| Mar 28, 3:17 PM EDT | Lakeshore Flood Advisory | APX | 21 hr |
| Apr 11, 4:56 PM EDT | High Wind Watch | APX | 23 hr |
| Apr 12, 3:38 PM EDT | Wind Advisory | APX | 32 hr |
| Apr 12, 9:51 PM EDT | Winter Weather Advisory | APX | 31 hr |
| Apr 18, 3:19 AM EDT | Lakeshore Flood Advisory | APX | 19 hr |
| May 30, 3:24 PM EDT | Frost Advisory | APX | 17 hr |
| Jun 5, 9:02 PM EDT | Special Weather Statement | APX | 28 min |
| Jun 9, 4:10 AM EDT | Wind Advisory | APX | 32 hr |
| Jun 9, 4:28 PM EDT | Coastal Flood Advisory | APX | 6 min |
| Jun 9, 4:34 PM EDT | Lakeshore Flood Advisory | APX | 21 hr |
| Jun 9, 11:11 PM EDT | Beach Hazards Statement | APX | 40 hr |
| Jul 6, 4:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 18, 3:34 AM EDT | Beach Hazards Statement | APX | 17 hr |
| Jul 18, 8:34 AM EDT | Special Weather Statement | APX | 41 min |
| Jul 18, 9:20 AM EDT | Special Weather Statement | APX | 55 min |
| Jul 18, 9:45 AM EDT | Special Weather Statement | APX | 60 min |
| Jul 19, 3:45 AM EDT | Special Weather Statement | APX | 2 hr |
| Jul 26, 6:49 AM EDT | Special Weather Statement | APX | 41 min |
| Jul 26, 8:21 AM EDT | Special Weather Statement | APX | 54 min |
| Jul 26, 8:54 AM EDT | Flash Flood Warning | APX | 2 hr |
| Aug 7, 9:29 PM EDT | Beach Hazards Statement | APX | 25 hr |
| Aug 9, 11:11 PM EDT | Mesoscale Discussion | SPC | 34 min |
| Aug 10, 4:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 15, 4:52 PM EDT | Flash Flood Warning | APX | 2 hr |
| Aug 16, 5:38 PM EDT | Special Weather Statement | APX | 37 min |
| Aug 20, 3:57 AM EDT | Beach Hazards Statement | APX | 16 hr |
| Sep 2, 4:19 PM EDT | Beach Hazards Statement | APX | 52 hr |
| Sep 3, 4:02 AM EDT | Lakeshore Flood Advisory | APX | 12 hr |
| Sep 5, 3:32 PM EDT | Beach Hazards Statement | APX | 48 hr |
| Sep 5, 3:32 PM EDT | Lakeshore Flood Advisory | APX | 48 hr |
| Sep 14, 4:00 PM EDT | Beach Hazards Statement | APX | 33 hr |
| Sep 14, 4:00 PM EDT | Lakeshore Flood Advisory | APX | 33 hr |
| Sep 17, 3:17 AM EDT | Freeze Warning | APX | 29 hr |
| Sep 18, 9:37 AM EDT | Frost Advisory | APX | 23 hr |
| Sep 18, 9:37 AM EDT | Freeze Warning | APX | 23 hr |
| Sep 20, 2:46 PM EDT | Beach Hazards Statement | APX | 41 hr |
| Sep 25, 3:17 PM EDT | Beach Hazards Statement | APX | 14 hr |
| Sep 26, 12:51 AM EDT | Special Weather Statement | APX | 39 min |
| Sep 26, 3:36 PM EDT | Beach Hazards Statement | APX | 24 hr |
| Oct 1, 3:41 PM EDT | Frost Advisory | APX | 16 hr |
| Oct 2, 10:52 AM EDT | Frost Advisory | APX | 21 hr |
| Oct 2, 10:52 AM EDT | Freeze Warning | APX | 21 hr |
| Oct 5, 2:54 AM EDT | Lakeshore Flood Advisory | APX | 26 hr |
| Oct 16, 4:14 PM EDT | Lakeshore Flood Warning | APX | 36 hr |
| Oct 27, 4:15 PM EDT | Lakeshore Flood Advisory | APX | 19 hr |
| Oct 30, 3:38 PM EDT | Lakeshore Flood Warning | APX | 56 hr |
| Oct 31, 4:17 AM EDT | Lakeshore Flood Advisory | APX | 25 hr |
| Oct 31, 4:18 AM EDT | Wind Advisory | APX | 40 hr |
| Oct 31, 2:54 PM EDT | Winter Weather Advisory | APX | 29 hr |
| Nov 10, 3:08 AM EST | Lakeshore Flood Advisory | APX | 31 hr |
| Nov 10, 2:07 PM EST | Wind Advisory | APX | 20 hr |
| Nov 14, 4:40 AM EST | Lakeshore Flood Watch | APX | 10 hr |
| Nov 14, 4:42 AM EST | Wind Advisory | APX | 23 hr |
| Nov 14, 2:37 PM EST | Lakeshore Flood Warning | APX | 45 hr |
| Nov 15, 4:11 AM EST | High Wind Warning | APX | 21 hr |
| Nov 15, 9:39 PM EST | Wind Advisory | APX | 9 hr |
| Nov 17, 3:58 PM EST | Lakeshore Flood Advisory | APX | 48 hr |
| Dec 11, 2:43 PM EST | Winter Weather Advisory | APX | 30 hr |
| Dec 16, 5:03 AM EST | Winter Weather Advisory | APX | 6 hr |
| Dec 22, 4:49 PM EST | Lakeshore Flood Advisory | APX | 38 hr |
| Dec 29, 3:04 AM EST | Winter Weather Advisory | APX | 33 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 | |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 9 |
| Flooding | |
| Flash Flood Warning | 2 |
| Winter | |
| Snow Squall Warning | 1 |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 17 |
| Cold | |
| Freeze Warning | 3 |
| Frost Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 6 |
| Coast and beach | |
| Lakeshore Flood Warning | 6 |
| Lakeshore Flood Watch | 1 |
| Coastal Flood Advisory | 1 |
| Lakeshore Flood Advisory | 18 |
| Beach Hazards Statement | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.