Alert archive / Michigan / Ontonagon County
Weather alerts in Ontonagon County, Michigan, 2010
60 weather alerts in 2010, 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 2010. Tap one for its archive.
- Alerts
- 60
- Warnings
- 18
- Watches
- 12
- Advisories
- 27
- Busiest month
- November9 alerts
- Busiest day
- May 25, 20106 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, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 4 | 56% | 5 | 100% | 14 min |
| Flash flood warnings | 1 | 1 | 0% | 1 | 100% | 21 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Marquette, MI: tornado warnings | 4 | 0 | 100% | 0 | ||
| NWS Marquette, MI: severe thunderstorm warnings | 36 | 14 | 61% | 29 | 72% | 19 min |
| NWS Marquette, MI: flash flood warnings | 2 | 1 | 50% | 2 | 50% | 21 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 1, 4:03 AM EST | Lake Effect Snow Advisory | MQT | 36 hr |
| Jan 6, 3:10 PM EST | Lake Effect Snow Advisory | MQT | 52 hr |
| Jan 23, 4:27 AM EST | Winter Weather Advisory | MQT | 38 hr |
| Jan 24, 4:05 PM EST | Lake Effect Snow Advisory | MQT | 48 hr |
| Jan 27, 4:46 AM EST | Lake Effect Snow Warning | MQT | 35 hr |
| Jan 27, 4:10 PM EST | Wind Chill Advisory | MQT | 17 hr |
| Feb 13, 4:15 AM EST | Winter Storm Watch | MQT | 12 hr |
| Feb 13, 4:01 PM EST | Winter Weather Advisory | MQT | 72 hr |
| Feb 14, 8:14 PM EST | Winter Storm Warning | MQT | 16 hr |
| Feb 22, 4:40 AM EST | Winter Storm Watch | MQT | 12 hr |
| Feb 22, 4:13 PM EST | Lake Effect Snow Warning | MQT | 51 hr |
| Apr 30, 1:23 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 30, 5:54 PM EDT | Severe Thunderstorm Warning | MQT | 58 min |
| Apr 30, 5:59 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Apr 30, 6:06 PM EDT | Severe Thunderstorm Warning | MQT | 39 min |
| May 7, 5:01 AM EDT | Winter Weather Advisory | MQT | 30 hr |
| May 14, 3:17 PM EDT | Frost Advisory | MQT | 17 hr |
| May 25, 1:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| May 25, 3:20 PM EDT | Severe Thunderstorm Warning | MQT | 55 min |
| May 25, 3:40 PM EDT | Severe Thunderstorm Warning | MQT | 52 min |
| May 25, 4:25 PM EDT | Severe Thunderstorm Warning | MQT | 35 min |
| May 25, 4:59 PM EDT | Severe Thunderstorm Warning | MQT | 46 min |
| May 25, 5:12 PM EDT | Flash Flood Warning | MQT | 3 hr |
| Jun 6, 3:41 PM EDT | Frost Advisory | MQT | 16 hr |
| Jun 22, 9:17 PM EDT | Severe Thunderstorm Warning | MQT | 43 min |
| Jul 7, 6:12 PM EDT | Areal Flood Advisory | MQT | 6 hr |
| Jul 14, 10:00 AM EDT | Tornado Watch | SPC | 9 hr |
| Jul 14, 12:43 PM EDT | Tornado Watch | SPC | 7 hr |
| Jul 14, 4:46 PM EDT | Areal Flood Advisory | MQT | 3 hr |
| Jul 27, 7:01 PM EDT | Tornado Watch | SPC | 6 hr |
| Aug 2, 2:38 AM EDT | Areal Flood Advisory | MQT | 4 hr |
| Aug 13, 8:14 PM EDT | Severe Thunderstorm Warning | MQT | 61 min |
| Aug 13, 9:26 PM EDT | Severe Thunderstorm Warning | MQT | 64 min |
| Aug 18, 11:41 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 21, 9:51 PM EDT | Dense Fog Advisory | MQT | 11 hr |
| Sep 3, 4:17 AM EDT | Wind Advisory | MQT | 25 hr |
| Sep 14, 4:13 AM EDT | Frost Advisory | MQT | 28 hr |
| Sep 18, 4:01 PM EDT | Frost Advisory | MQT | 16 hr |
| Sep 19, 4:08 PM EDT | Frost Advisory | MQT | 16 hr |
| Sep 21, 3:04 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Sep 22, 2:43 PM EDT | Flood Watch | MQT | 38 hr |
| Sep 25, 4:18 AM EDT | Freeze Warning | MQT | 29 hr |
| Sep 26, 3:59 PM EDT | Frost Advisory | MQT | 17 hr |
| Oct 24, 4:27 PM EDT | High Wind Watch | MQT | 24 hr |
| Oct 25, 4:21 PM EDT | High Wind Warning | MQT | 48 hr |
| Oct 27, 4:21 PM EDT | Wind Advisory | MQT | 28 hr |
| Nov 12, 4:16 PM EST | Winter Weather Advisory | MQT | 23 hr |
| Nov 17, 8:27 PM EST | Lake Effect Snow Advisory | MQT | 14 hr |
| Nov 22, 4:45 AM EST | Lake Effect Snow Advisory | MQT | 6 hr |
| Nov 22, 11:09 AM EST | Winter Weather Advisory | MQT | 11 hr |
| Nov 22, 9:41 PM EST | Lake Effect Snow Advisory | MQT | 24 hr |
| Nov 24, 4:36 AM EST | Winter Weather Advisory | MQT | 26 hr |
| Nov 24, 3:39 PM EST | Winter Storm Watch | MQT | 13 hr |
| Nov 25, 4:29 AM EST | Lake Effect Snow Watch | MQT | 17 hr |
| Nov 25, 9:43 PM EST | Lake Effect Snow Warning | MQT | 21 hr |
| Dec 4, 4:38 AM EST | Lake Effect Snow Advisory | MQT | 5 days |
| Dec 10, 5:12 AM EST | Winter Storm Watch | MQT | 12 hr |
| Dec 10, 4:46 PM EST | Winter Storm Warning | MQT | 62 hr |
| Dec 25, 9:00 AM EST | Lake Effect Snow Advisory | MQT | 4 hr |
| Dec 25, 1:27 PM EST | Lake Effect Snow Warning | MQT | 8 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.