Alert archive / Michigan / Cheboygan County
Weather alerts in Cheboygan County, Michigan, 2020
67 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cheboygan County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 67
- Warnings
- 22
- Watches
- 5
- Advisories
- 22
- Busiest month
- July14 alerts
- Busiest day
- July 18, 202011 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Cheboygan County in 2020 had a tornado report inside them.
Cheboygan County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 12 | 4 | 67% | 7 | 57% | 16 min |
| Flash flood warnings | 1 | 1 | 0% | 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 7, 9:43 AM EST | Snow Squall Warning | APX | 92 min |
| 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, 10:48 PM EST | Winter Weather Advisory | APX | 11 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 |
| Feb 9, 3:15 AM EST | Winter Weather Advisory | APX | 21 hr |
| Feb 17, 3:43 AM EST | Winter Weather Advisory | APX | 35 hr |
| Feb 27, 3:27 AM EST | Winter Weather Advisory | APX | 48 hr |
| Mar 5, 1:49 PM EST | Winter Weather Advisory | APX | 20 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 14, 11:38 AM EDT | Winter Weather Advisory | APX | 17 hr |
| May 17, 12:36 PM EDT | Lakeshore Flood Advisory | APX | 28 hr |
| May 25, 3:40 PM EDT | Special Weather Statement | APX | 35 min |
| May 25, 3:50 PM EDT | Severe Thunderstorm Warning | APX | 25 min |
| May 28, 2:24 PM EDT | Special Weather Statement | APX | 3 hr |
| May 30, 3:24 PM EDT | Frost Advisory | APX | 17 hr |
| Jun 9, 4:10 AM EDT | Wind Advisory | APX | 32 hr |
| Jun 9, 11:11 PM EDT | Beach Hazards Statement | APX | 40 hr |
| Jun 10, 12:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jul 18, 10:20 AM EDT | Severe Thunderstorm Warning | APX | 38 min |
| Jul 18, 10:30 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 10:40 AM EDT | Severe Thunderstorm Warning | APX | 40 min |
| Jul 18, 4:04 PM EDT | Tornado Warning | APX | 41 min |
| Jul 18, 4:18 PM EDT | Flash Flood Warning | APX | 107 min |
| Jul 18, 4:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 18, 4:35 PM EDT | Severe Thunderstorm Warning | APX | 40 min |
| Jul 18, 4:49 PM EDT | Severe Thunderstorm Warning | APX | 41 min |
| Jul 18, 5:04 PM EDT | Severe Thunderstorm Warning | APX | 56 min |
| Jul 18, 5:12 PM EDT | Severe Thunderstorm Warning | APX | 48 min |
| Jul 18, 6:04 PM EDT | Severe Thunderstorm Warning | APX | 56 min |
| Jul 19, 4:22 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 19, 5:26 AM EDT | Severe Thunderstorm Warning | APX | 64 min |
| Jul 19, 5:37 AM EDT | Severe Thunderstorm Warning | APX | 68 min |
| Aug 8, 9:00 AM EDT | Special Weather Statement | APX | 2 hr |
| Aug 10, 4:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 10, 8:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 15, 4:17 PM EDT | Special Weather Statement | APX | 28 min |
| Aug 15, 4:43 PM EDT | Special Weather Statement | APX | 32 min |
| Aug 15, 4:44 PM EDT | Special Weather Statement | APX | 31 min |
| Sep 3, 11:55 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 17, 3:17 AM EDT | Freeze Warning | APX | 29 hr |
| Sep 18, 9:37 AM EDT | Freeze Warning | APX | 23 hr |
| Sep 26, 2:32 AM EDT | Severe Thunderstorm Warning | APX | 32 min |
| Oct 1, 3:41 PM EDT | Frost Advisory | APX | 16 hr |
| Oct 2, 10:52 AM EDT | Freeze Warning | APX | 21 hr |
| Oct 13, 5:06 PM EDT | Special Weather Statement | APX | 54 min |
| Oct 16, 12:37 PM EDT | Special Weather Statement | APX | 38 min |
| Oct 22, 10:37 PM EDT | Flood Watch | APX | 16 hr |
| Oct 22, 11:35 PM EDT | Areal Flood Warning | APX | 15 hr |
| Oct 31, 4:18 AM EDT | Wind Advisory | APX | 40 hr |
| Nov 10, 2:07 PM EST | Wind Advisory | APX | 20 hr |
| Nov 10, 7:56 PM EST | Severe Thunderstorm Warning | APX | 21 min |
| Nov 14, 4:42 AM EST | Wind Advisory | APX | 23 hr |
| Nov 15, 4:11 AM EST | High Wind Warning | APX | 21 hr |
| Nov 15, 9:39 PM EST | Wind Advisory | APX | 9 hr |
| Dec 10, 4:05 PM EST | Winter Storm Watch | APX | 23 hr |
| Dec 11, 2:43 PM EST | Winter Storm Warning | APX | 30 hr |
| Dec 11, 2:51 PM EST | Lakeshore Flood Advisory | APX | 37 hr |
| Dec 12, 10:01 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 12, 1:54 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 23, 3:57 PM EST | Winter Weather Advisory | APX | 43 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 | |
| Severe Thunderstorm Warning | 12 |
| Tornado Warning | 1 |
| Mesoscale Discussion | 9 |
| Special Weather Statement | 8 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 1 |
| Flood Watch | 1 |
| Winter | |
| Snow Squall Warning | 1 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 12 |
| Cold | |
| Freeze Warning | 3 |
| Frost Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 6 |
| Coast and beach | |
| Lakeshore Flood Advisory | 2 |
| Beach Hazards Statement | 1 |
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.