Alert archive / Michigan / Alger County
Weather alerts in Alger County, Michigan, 2018
86 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Alger County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 86
- Warnings
- 8
- Watches
- 10
- Advisories
- 42
- Busiest month
- September15 alerts
- Busiest day
- July 1, 20186 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Alger County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 2 | 1 | 50% | 0 | ||
| Flash flood warnings | 2 | 1 | 50% | 1 | 100% | 326 min |
Each office's whole area, 2018
| 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 | 65 | 23 | 65% | 75 | 69% | 22 min |
| NWS Marquette, MI: flash flood warnings | 10 | 5 | 50% | 31 | 87% | 218 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 2, 4:14 AM EST | Winter Weather Advisory | MQT | 4 days |
| Jan 6, 2:39 PM EST | Winter Weather Advisory | MQT | 23 hr |
| Jan 10, 3:39 PM EST | Winter Weather Advisory | MQT | 44 hr |
| Jan 14, 4:28 AM EST | Winter Weather Advisory | MQT | 61 hr |
| Jan 15, 1:52 PM EST | Winter Weather Advisory | MQT | 29 hr |
| Jan 20, 3:10 PM EST | Winter Storm Watch | MQT | 24 hr |
| Jan 21, 3:35 PM EST | Winter Storm Warning | MQT | 34 hr |
| Jan 30, 4:16 AM EST | Winter Weather Advisory | MQT | 32 hr |
| Jan 31, 2:41 PM EST | Winter Weather Advisory | MQT | 43 hr |
| Feb 2, 3:14 PM EST | Winter Weather Advisory | MQT | 34 hr |
| Feb 18, 3:20 PM EST | Winter Weather Advisory | MQT | 52 hr |
| Feb 20, 8:31 AM EST | Special Weather Statement | MQT | 59 min |
| Feb 22, 3:32 AM EST | Winter Weather Advisory | MQT | 31 hr |
| Feb 24, 4:19 AM EST | Winter Weather Advisory | MQT | 26 hr |
| Mar 5, 3:36 PM EST | Winter Weather Advisory | MQT | 45 hr |
| Mar 7, 1:35 PM EST | Winter Weather Advisory | MQT | 2 hr |
| Mar 12, 4:05 AM EDT | Winter Weather Advisory | MQT | 35 hr |
| Mar 29, 3:21 PM EDT | Winter Storm Watch | MQT | 22 hr |
| Mar 30, 4:37 AM EDT | Winter Storm Warning | MQT | 39 hr |
| Mar 31, 6:25 AM EDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 2, 3:48 PM EDT | Winter Weather Advisory | MQT | 34 hr |
| Apr 13, 4:27 AM EDT | Winter Storm Watch | MQT | 25 hr |
| Apr 14, 5:06 AM EDT | Winter Storm Warning | MQT | 47 hr |
| Apr 14, 6:35 AM EDT | Lakeshore Flood Advisory | MQT | 41 hr |
| Apr 15, 9:49 PM EDT | Winter Weather Advisory | MQT | 34 hr |
| May 26, 12:43 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 12, 3:47 PM EDT | Fire Weather Watch | MQT | 13 hr |
| Jun 13, 4:38 AM EDT | Beach Hazards Statement | MQT | 15 hr |
| Jun 16, 6:41 AM EDT | Severe Thunderstorm Warning | MQT | 49 min |
| Jun 17, 6:48 PM EDT | Areal Flood Advisory | MQT | 3 hr |
| Jun 17, 8:16 PM EDT | Areal Flood Advisory | MQT | 3 hr |
| Jun 29, 12:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 30, 3:16 AM EDT | Heat Advisory | MQT | 17 hr |
| Jun 30, 5:41 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 30, 9:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 30, 9:24 PM EDT | Areal Flood Advisory | MQT | 3 hr |
| Jun 30, 9:43 PM EDT | Special Weather Statement | MQT | 62 min |
| Jun 30, 10:22 PM EDT | Flash Flood Warning | MQT | 6 hr |
| Jul 1, 1:04 PM EDT | Tornado Watch | SPC | 6 hr |
| Jul 1, 2:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jul 4, 6:10 PM EDT | Special Weather Statement | MQT | 65 min |
| Jul 17, 4:03 AM EDT | Beach Hazards Statement | MQT | 14 hr |
| Jul 27, 3:51 AM EDT | Beach Hazards Statement | MQT | 16 hr |
| Aug 1, 3:57 AM EDT | Beach Hazards Statement | MQT | 16 hr |
| Aug 5, 6:27 PM EDT | Special Weather Statement | MQT | 48 min |
| Aug 5, 7:58 PM EDT | Special Weather Statement | MQT | 47 min |
| Aug 5, 8:03 PM EDT | Severe Thunderstorm Warning | MQT | 42 min |
| Aug 6, 3:24 PM EDT | Special Weather Statement | MQT | 51 min |
| Aug 20, 2:32 PM EDT | Beach Hazards Statement | MQT | 29 hr |
| Aug 27, 6:27 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 7:01 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 27, 11:17 PM EDT | Special Weather Statement | MQT | 43 min |
| Aug 28, 3:59 AM EDT | Beach Hazards Statement | MQT | 18 hr |
| Aug 29, 4:05 AM EDT | Beach Hazards Statement | MQT | 16 hr |
| Sep 4, 9:24 AM EDT | Flash Flood Watch | MQT | 26 hr |
| Sep 5, 12:55 AM EDT | Areal Flood Advisory | MQT | 9 hr |
| Sep 5, 3:04 AM EDT | Flash Flood Warning | MQT | 7 hr |
| Sep 5, 4:14 AM EDT | Beach Hazards Statement | MQT | 17 hr |
| Sep 5, 9:48 AM EDT | Areal Flood Advisory | MQT | 3 hr |
| Sep 5, 12:55 PM EDT | Areal Flood Advisory | MQT | 4 hr |
| Sep 8, 4:05 AM EDT | Beach Hazards Statement | MQT | 17 hr |
| Sep 17, 4:47 AM EDT | Beach Hazards Statement | MQT | 15 hr |
| Sep 18, 4:39 AM EDT | Beach Hazards Statement | MQT | 9 hr |
| Sep 20, 2:19 PM EDT | Lakeshore Flood Advisory | MQT | 33 hr |
| Sep 21, 4:23 AM EDT | Wind Advisory | MQT | 18 hr |
| Sep 21, 3:20 PM EDT | Frost Advisory | MQT | 18 hr |
| Sep 28, 3:04 AM EDT | Frost Advisory | MQT | 31 hr |
| Sep 28, 5:10 PM EDT | Special Weather Statement | MQT | 65 min |
| Sep 29, 11:01 PM EDT | Frost Advisory | MQT | 7 hr |
| Oct 3, 4:10 AM EDT | Lakeshore Flood Advisory | MQT | 34 hr |
| Oct 3, 4:10 AM EDT | Wind Advisory | MQT | 29 hr |
| Oct 3, 4:31 PM EDT | Tornado Watch | SPC | 7 hr |
| Oct 3, 8:03 PM EDT | Special Weather Statement | MQT | 42 min |
| Oct 8, 4:20 PM EDT | Flood Watch | MQT | 52 hr |
| Oct 10, 4:25 PM EDT | Areal Flood Advisory | MQT | 4 hr |
| Nov 8, 3:27 AM EST | Winter Storm Warning | MQT | 52 hr |
| Nov 8, 3:11 PM EST | Winter Weather Advisory | MQT | 40 hr |
| Nov 9, 4:16 AM EST | Lakeshore Flood Advisory | MQT | 30 hr |
| Nov 13, 3:09 AM EST | Winter Weather Advisory | MQT | 34 hr |
| Dec 1, 3:49 AM EST | Winter Weather Advisory | MQT | 36 hr |
| Dec 5, 3:52 AM EST | Winter Weather Advisory | MQT | 54 hr |
| Dec 13, 3:27 AM EST | Dense Fog Advisory | MQT | 6 hr |
| Dec 26, 4:42 AM EST | Winter Weather Advisory | MQT | 56 hr |
| Dec 27, 3:59 PM EST | Coastal Flood Advisory | MQT | 3 hr |
| Dec 27, 7:23 PM EST | Lakeshore Flood Advisory | MQT | 29 hr |
| Dec 31, 4:41 AM EST | Winter Weather Advisory | MQT | 26 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 | 2 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 6 |
| Special Weather Statement | 9 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 1 |
| Flood Watch | 1 |
| Areal Flood Advisory | 7 |
| Winter | |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 22 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Frost Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Coastal Flood Advisory | 1 |
| Lakeshore Flood Advisory | 5 |
| Beach Hazards Statement | 11 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.