Alert archive / Michigan / Ontonagon County
Weather alerts in Ontonagon County, Michigan, 2017
83 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 83
- Warnings
- 14
- Watches
- 4
- Advisories
- 48
- Busiest month
- June12 alerts
- Busiest day
- July 6, 20177 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, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 4 | 50% | 2 | 100% | 31 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Marquette, MI: severe thunderstorm warnings | 75 | 39 | 48% | 85 | 68% | 19 min |
| NWS Marquette, MI: flash flood warnings | 3 | 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 3, 4:28 AM EST | Lake Effect Snow Warning | MQT | 3 days |
| Jan 4, 3:25 PM EST | Wind Chill Advisory | MQT | 22 hr |
| Jan 5, 4:49 AM EST | Lake Effect Snow Advisory | MQT | 3 days |
| Jan 5, 3:57 PM EST | Wind Chill Advisory | MQT | 20 hr |
| Jan 6, 3:22 PM EST | Wind Chill Advisory | MQT | 20 hr |
| Jan 9, 4:07 AM EST | Winter Weather Advisory | MQT | 45 hr |
| Jan 11, 3:49 AM EST | Winter Weather Advisory | MQT | 15 hr |
| Jan 19, 9:27 PM EST | Dense Fog Advisory | MQT | 64 hr |
| Jan 22, 6:39 PM EST | Dense Fog Advisory | MQT | 4 hr |
| Jan 28, 3:45 AM EST | Lake Effect Snow Advisory | MQT | 36 hr |
| Feb 6, 4:13 PM EST | Winter Weather Advisory | MQT | 33 hr |
| Feb 8, 3:18 PM EST | Lake Effect Snow Advisory | MQT | 33 hr |
| Feb 12, 8:37 AM EST | Wind Advisory | MQT | 8 hr |
| Feb 14, 3:26 AM EST | Winter Weather Advisory | MQT | 28 hr |
| Feb 23, 4:25 PM EST | Winter Weather Advisory | MQT | 51 hr |
| Feb 24, 4:59 AM EST | Winter Storm Warning | MQT | 26 hr |
| Mar 6, 3:45 PM EST | Wind Advisory | MQT | 51 hr |
| Mar 9, 3:23 PM EST | Wind Chill Advisory | MQT | 20 hr |
| Mar 17, 5:02 AM EDT | Winter Weather Advisory | MQT | 5 hr |
| Mar 17, 10:47 AM EDT | Winter Weather Advisory | MQT | 8 hr |
| Mar 23, 3:47 PM EDT | Winter Weather Advisory | MQT | 22 hr |
| Mar 25, 3:44 PM EDT | Winter Weather Advisory | MQT | 20 hr |
| Apr 26, 4:50 AM EDT | Winter Weather Advisory | MQT | 39 hr |
| May 16, 4:26 PM EDT | Flash Flood Watch | MQT | 35 hr |
| May 17, 10:12 PM EDT | Special Weather Statement | MQT | 63 min |
| Jun 3, 3:30 PM EDT | Severe Thunderstorm Warning | MQT | 45 min |
| Jun 3, 3:47 PM EDT | Severe Thunderstorm Warning | MQT | 43 min |
| Jun 3, 3:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 3, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 3, 4:16 PM EDT | Severe Thunderstorm Warning | MQT | 59 min |
| Jun 10, 4:06 AM EDT | Wind Advisory | MQT | 16 hr |
| Jun 10, 12:13 PM EDT | Special Weather Statement | MQT | 32 min |
| Jun 10, 9:01 PM EDT | Special Weather Statement | MQT | 44 min |
| Jun 10, 9:12 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 9:21 PM EDT | Severe Thunderstorm Warning | MQT | 54 min |
| Jun 11, 6:24 PM EDT | Areal Flood Warning | MQT | 9 hr |
| Jun 13, 3:54 PM EDT | Special Weather Statement | MQT | 66 min |
| Jul 6, 6:43 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 8:23 AM EDT | Special Weather Statement | MQT | 37 min |
| Jul 6, 9:12 AM EDT | Special Weather Statement | MQT | 63 min |
| Jul 6, 3:00 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jul 6, 6:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 6, 7:10 PM EDT | Severe Thunderstorm Warning | MQT | 35 min |
| Jul 6, 7:42 PM EDT | Severe Thunderstorm Warning | MQT | 48 min |
| Jul 18, 1:22 PM EDT | Special Weather Statement | MQT | 53 min |
| Aug 9, 4:00 PM EDT | Special Weather Statement | MQT | 45 min |
| Aug 9, 7:09 PM EDT | Special Weather Statement | MQT | 51 min |
| Aug 24, 2:13 PM EDT | Frost Advisory | MQT | 19 hr |
| Aug 31, 2:20 PM EDT | Frost Advisory | MQT | 19 hr |
| Sep 3, 11:41 PM EDT | Severe Thunderstorm Warning | MQT | 49 min |
| Sep 4, 5:46 PM EDT | Special Weather Statement | MQT | 44 min |
| Sep 4, 6:38 PM EDT | Special Weather Statement | MQT | 37 min |
| Sep 7, 4:12 PM EDT | Frost Advisory | MQT | 17 hr |
| Sep 8, 3:36 PM EDT | Frost Advisory | MQT | 17 hr |
| Sep 22, 11:20 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Sep 22, 12:05 PM EDT | Severe Thunderstorm Warning | MQT | 55 min |
| Sep 22, 12:37 PM EDT | Special Weather Statement | MQT | 53 min |
| Sep 29, 4:00 AM EDT | Frost Advisory | MQT | 29 hr |
| Oct 23, 4:30 AM EDT | Wind Advisory | MQT | 47 hr |
| Oct 23, 4:52 AM EDT | Lakeshore Flood Advisory | MQT | 35 hr |
| Oct 26, 4:32 AM EDT | Lakeshore Flood Advisory | MQT | 51 hr |
| Oct 26, 4:21 PM EDT | Winter Storm Watch | MQT | 12 hr |
| Oct 27, 3:59 AM EDT | Winter Storm Warning | MQT | 34 hr |
| Oct 27, 3:59 AM EDT | Winter Weather Advisory | MQT | 8 hr |
| Oct 27, 3:42 PM EDT | Areal Flood Advisory | MQT | 9 hr |
| Oct 30, 4:14 AM EDT | Winter Weather Advisory | MQT | 34 hr |
| Nov 1, 3:52 PM EDT | Winter Weather Advisory | MQT | 12 hr |
| Nov 2, 3:25 PM EDT | Winter Weather Advisory | MQT | 19 hr |
| Nov 3, 3:26 PM EDT | Winter Weather Advisory | MQT | 21 hr |
| Nov 7, 4:08 PM EST | Winter Storm Warning | MQT | 63 hr |
| Nov 7, 4:08 PM EST | Winter Weather Advisory | MQT | 63 hr |
| Nov 15, 9:23 AM EST | Dense Fog Advisory | MQT | 6 hr |
| Nov 20, 9:26 PM EST | Wind Advisory | MQT | 16 hr |
| Nov 27, 3:18 PM EST | Wind Advisory | MQT | 12 hr |
| Dec 4, 4:13 AM EST | Wind Advisory | MQT | 35 hr |
| Dec 4, 6:12 AM EST | Lakeshore Flood Advisory | MQT | 50 hr |
| Dec 4, 2:54 PM EST | Winter Weather Advisory | MQT | 69 hr |
| Dec 7, 4:16 AM EST | Winter Weather Advisory | MQT | 3 days |
| Dec 11, 4:23 AM EST | Winter Weather Advisory | MQT | 34 hr |
| Dec 14, 3:37 AM EST | Winter Weather Advisory | MQT | 61 hr |
| Dec 24, 12:12 PM EST | Winter Weather Advisory | MQT | 4 days |
| Dec 28, 3:06 AM EST | Winter Weather Advisory | MQT | 36 hr |
| Dec 28, 9:13 PM EST | Winter Storm Warning | MQT | 55 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 | 8 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 5 |
| Special Weather Statement | 12 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 1 |
| Winter | |
| Lake Effect Snow Warning | 1 |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 1 |
| Lake Effect Snow Advisory | 3 |
| Winter Weather Advisory | 22 |
| Cold | |
| Frost Advisory | 5 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Coast and beach | |
| Lakeshore Flood Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.