Alert archive / Michigan / Ontonagon County
Weather alerts in Ontonagon County, Michigan, 2015
54 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 54
- Warnings
- 12
- Watches
- 3
- Advisories
- 32
- Busiest month
- January10 alerts
- Busiest day
- January 6, 20153 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, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 3 | 0 | 100% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Marquette, MI: tornado warnings | 2 | 0 | 100% | 0 | ||
| NWS Marquette, MI: severe thunderstorm warnings | 39 | 13 | 67% | 34 | 65% | 10 min |
| NWS Marquette, MI: flash flood warnings | 1 | 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, 5:17 AM EST | Winter Weather Advisory | MQT | 5 days |
| Jan 3, 5:19 AM EST | Lakeshore Flood Advisory | MQT | 38 hr |
| Jan 4, 4:47 AM EST | Wind Chill Warning | MQT | 32 hr |
| Jan 5, 3:52 PM EST | Wind Chill Advisory | MQT | 18 hr |
| Jan 6, 4:51 AM EST | Lake Effect Snow Advisory | MQT | 24 days |
| Jan 6, 4:59 AM EST | Lakeshore Flood Advisory | MQT | 50 hr |
| Jan 6, 3:56 PM EST | Wind Chill Advisory | MQT | 21 hr |
| Jan 7, 2:54 PM EST | Wind Chill Advisory | MQT | 19 hr |
| Jan 8, 5:07 AM EST | Lake Effect Snow Advisory | MQT | 59 hr |
| Jan 8, 4:06 PM EST | Wind Chill Advisory | MQT | 43 hr |
| Feb 3, 3:55 PM EST | Lake Effect Snow Advisory | MQT | 33 hr |
| Feb 10, 4:07 AM EST | Winter Weather Advisory | MQT | 27 hr |
| Feb 11, 4:51 AM EST | Winter Weather Advisory | MQT | 35 hr |
| Feb 12, 4:14 PM EST | Winter Weather Advisory | MQT | 54 hr |
| Feb 17, 4:42 AM EST | Wind Chill Advisory | MQT | 55 hr |
| Feb 21, 3:50 AM EST | Wind Chill Advisory | MQT | 56 hr |
| Feb 25, 2:34 PM EST | Wind Chill Advisory | MQT | 20 hr |
| Mar 2, 3:58 PM EST | Winter Weather Advisory | MQT | 25 hr |
| Mar 25, 3:37 PM EDT | Winter Weather Advisory | MQT | 27 hr |
| Apr 8, 4:25 PM EDT | Winter Storm Watch | MQT | 24 hr |
| Apr 9, 4:16 PM EDT | Winter Weather Advisory | MQT | 22 hr |
| Apr 21, 10:33 PM EDT | Winter Weather Advisory | MQT | 13 hr |
| May 3, 3:34 PM EDT | Special Weather Statement | MQT | 41 min |
| May 30, 4:27 AM EDT | Freeze Warning | MQT | 28 hr |
| May 31, 3:11 PM EDT | Freeze Warning | MQT | 17 hr |
| Jun 10, 12:06 AM EDT | Severe Thunderstorm Warning | MQT | 54 min |
| Jun 22, 5:48 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 24, 6:51 PM EDT | Severe Thunderstorm Warning | MQT | 17 min |
| Jun 27, 5:29 PM EDT | Special Weather Statement | MQT | 16 min |
| Jun 29, 2:19 PM EDT | Special Weather Statement | MQT | 56 min |
| Jun 29, 2:22 PM EDT | Special Weather Statement | MQT | 53 min |
| Jul 12, 4:55 PM EDT | Special Weather Statement | MQT | 50 min |
| Aug 2, 5:21 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 5:49 AM EDT | Special Weather Statement | MQT | 56 min |
| Aug 2, 6:05 AM EDT | Severe Thunderstorm Warning | MQT | 40 min |
| Sep 2, 11:17 AM EDT | Areal Flood Advisory | MQT | 3 hr |
| Sep 3, 3:14 AM EDT | Dense Fog Advisory | MQT | 7 hr |
| Sep 6, 10:55 PM EDT | Areal Flood Advisory | MQT | 5 hr |
| Sep 11, 3:19 PM EDT | Frost Advisory | MQT | 18 hr |
| Sep 28, 3:17 PM EDT | Freeze Watch | MQT | 20 hr |
| Sep 29, 10:50 AM EDT | Freeze Warning | MQT | 22 hr |
| Sep 30, 4:03 PM EDT | Freeze Warning | MQT | 17 hr |
| Oct 1, 2:44 PM EDT | Freeze Warning | MQT | 18 hr |
| Oct 2, 2:32 PM EDT | Frost Advisory | MQT | 18 hr |
| Oct 3, 3:40 PM EDT | Frost Advisory | MQT | 17 hr |
| Nov 12, 4:51 AM EST | Winter Storm Warning | MQT | 32 hr |
| Nov 21, 3:58 AM EST | Lake Effect Snow Advisory | MQT | 34 hr |
| Nov 21, 3:04 PM EST | Lake Effect Snow Warning | MQT | 21 hr |
| Dec 14, 11:21 AM EST | Winter Weather Advisory | MQT | 14 hr |
| Dec 17, 9:48 PM EST | Lake Effect Snow Advisory | MQT | 45 hr |
| Dec 23, 3:49 PM EST | Winter Weather Advisory | MQT | 17 hr |
| Dec 25, 3:30 PM EST | Winter Weather Advisory | MQT | 36 hr |
| Dec 27, 3:37 PM EST | Winter Storm Warning | MQT | 40 hr |
| Dec 27, 3:37 PM EST | Winter Weather Advisory | MQT | 37 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 | 3 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 6 |
| Flooding | |
| Areal Flood Advisory | 2 |
| Winter | |
| Lake Effect Snow Warning | 1 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 1 |
| Lake Effect Snow Advisory | 5 |
| Winter Weather Advisory | 12 |
| Cold | |
| Freeze Warning | 5 |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Lakeshore Flood Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20142016
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.