Alert archive / Michigan / Ontonagon County
Weather alerts in Ontonagon County, Michigan, 2012
64 weather alerts in 2012, 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 2012. Tap one for its archive.
- Alerts
- 64
- Warnings
- 20
- Watches
- 12
- Advisories
- 25
- Busiest month
- May12 alerts
- Busiest day
- July 3, 20125 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, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 2 | 75% | 5 | 40% | 46 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Marquette, MI: tornado warnings | 2 | 1 | 50% | 1 | 100% | 6 min |
| NWS Marquette, MI: severe thunderstorm warnings | 64 | 23 | 64% | 71 | 61% | 22 min |
| NWS Marquette, MI: flash flood warnings | 1 | 0 | 100% | 1 | 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 10, 4:14 AM EST | Winter Storm Watch | MQT | 49 hr |
| Jan 11, 4:44 AM EST | Winter Storm Warning | MQT | 59 hr |
| Jan 16, 4:45 AM EST | Lake Effect Snow Advisory | MQT | 50 hr |
| Jan 17, 11:52 AM EST | Lake Effect Snow Warning | MQT | 7 hr |
| Jan 18, 5:01 AM EST | Winter Storm Watch | MQT | 11 hr |
| Jan 18, 4:22 PM EST | Lake Effect Snow Warning | MQT | 33 hr |
| Jan 19, 4:36 AM EST | Wind Chill Advisory | MQT | 29 hr |
| Jan 22, 4:26 PM EST | Winter Storm Warning | MQT | 23 hr |
| Jan 23, 3:03 PM EST | Winter Weather Advisory | MQT | 16 hr |
| Jan 27, 4:14 AM EST | Lake Effect Snow Watch | MQT | 24 hr |
| Jan 28, 4:06 AM EST | Lake Effect Snow Warning | MQT | 39 hr |
| Feb 24, 4:21 AM EST | Winter Weather Advisory | MQT | 11 hr |
| Feb 24, 3:31 PM EST | Lake Effect Snow Warning | MQT | 21 hr |
| Feb 26, 4:33 AM EST | Winter Weather Advisory | MQT | 7 hr |
| Feb 26, 11:52 AM EST | Winter Weather Advisory | MQT | 25 hr |
| Feb 27, 4:51 AM EST | Winter Storm Watch | MQT | 24 hr |
| Feb 28, 4:25 AM EST | Winter Storm Warning | MQT | 41 hr |
| Mar 26, 5:16 AM EDT | Freezing Rain Advisory | MQT | 28 hr |
| Mar 27, 11:09 AM EDT | Wind Advisory | MQT | 6 hr |
| Apr 8, 9:16 AM EDT | Red Flag Warning | MQT | 12 hr |
| Apr 14, 2:42 PM EDT | Red Flag Warning | MQT | 5 hr |
| Apr 16, 4:50 AM EDT | Wind Advisory | MQT | 18 hr |
| May 12, 3:06 PM EDT | Fire Weather Watch | MQT | 13 hr |
| May 13, 4:10 AM EDT | Red Flag Warning | MQT | 16 hr |
| May 17, 3:54 PM EDT | Fire Weather Watch | MQT | 38 hr |
| May 19, 5:01 AM EDT | Red Flag Warning | MQT | 15 hr |
| May 20, 12:17 PM EDT | Severe Thunderstorm Warning | MQT | 43 min |
| May 20, 1:24 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 21, 2:41 PM EDT | Frost Advisory | MQT | 17 hr |
| May 24, 4:17 AM EDT | Wind Advisory | MQT | 16 hr |
| May 24, 3:22 PM EDT | Tornado Watch | SPC | 5 hr |
| May 28, 10:11 PM EDT | Severe Thunderstorm Warning | MQT | 34 min |
| May 30, 4:48 AM EDT | Frost Advisory | MQT | 27 hr |
| May 31, 3:32 PM EDT | Frost Advisory | MQT | 16 hr |
| Jun 12, 4:26 AM EDT | Frost Advisory | MQT | 27 hr |
| Jun 20, 3:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 20, 4:25 PM EDT | Severe Thunderstorm Warning | MQT | 65 min |
| Jun 20, 5:02 PM EDT | Areal Flood Advisory | MQT | 6 hr |
| Jul 2, 10:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 2, 11:13 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 2, 11:46 PM EDT | Severe Thunderstorm Warning | MQT | 59 min |
| Jul 3, 12:17 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 3, 12:38 AM EDT | Severe Thunderstorm Warning | MQT | 67 min |
| Jul 4, 4:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jul 6, 4:41 PM EDT | Severe Thunderstorm Warning | MQT | 40 min |
| Sep 4, 4:27 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 4, 7:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Sep 4, 8:42 PM EDT | Severe Thunderstorm Warning | MQT | 63 min |
| Sep 4, 9:30 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Sep 14, 5:02 AM EDT | Frost Advisory | MQT | 27 hr |
| Sep 17, 4:07 PM EDT | Freeze Watch | MQT | 24 hr |
| Sep 18, 3:57 PM EDT | Frost Advisory | MQT | 16 hr |
| Oct 5, 3:41 PM EDT | Winter Weather Advisory | MQT | 19 hr |
| Oct 24, 7:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 25, 9:14 AM EDT | Severe Thunderstorm Warning | MQT | 61 min |
| Nov 11, 3:57 PM EST | Winter Weather Advisory | MQT | 36 hr |
| Nov 20, 4:00 PM EST | Dense Fog Advisory | MQT | 16 hr |
| Nov 22, 4:37 AM EST | Winter Weather Advisory | MQT | 12 hr |
| Nov 22, 4:32 PM EST | Winter Storm Warning | MQT | 32 hr |
| Nov 22, 4:32 PM EST | Winter Weather Advisory | MQT | 32 hr |
| Nov 25, 4:26 AM EST | Lake Effect Snow Advisory | MQT | 42 hr |
| Dec 8, 3:58 AM EST | Winter Storm Watch | MQT | 12 hr |
| Dec 8, 3:58 PM EST | Winter Weather Advisory | MQT | 45 hr |
| Dec 19, 5:10 AM EST | Winter Weather Advisory | MQT | 53 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 | 3 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 7 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Lake Effect Snow Warning | 4 |
| Winter Storm Warning | 4 |
| Lake Effect Snow Watch | 1 |
| Winter Storm Watch | 4 |
| Freezing Rain Advisory | 1 |
| Lake Effect Snow Advisory | 2 |
| Winter Weather Advisory | 10 |
| Cold | |
| Freeze Watch | 1 |
| Frost Advisory | 6 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 4 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.