Alert archive / Michigan / Alger County
Weather alerts in Alger County, Michigan, 2015
53 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 53
- Warnings
- 9
- Watches
- 2
- Advisories
- 28
- Busiest month
- February11 alerts
- Busiest day
- January 6, 20154 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, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 3 | 2 | 33% | 1 | 100% | 8 min |
| 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 Advisory | MQT | 32 hr |
| Jan 5, 3:52 PM EST | Lake Effect Snow Watch | MQT | 13 hr |
| Jan 5, 3:52 PM EST | Wind Chill Advisory | MQT | 18 hr |
| Jan 6, 4:51 AM EST | Lake Effect Snow Warning | MQT | 32 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 8, 5:07 AM EST | Lake Effect Snow Advisory | MQT | 59 hr |
| Feb 3, 3:55 PM EST | Lake Effect Snow Advisory | MQT | 33 hr |
| Feb 7, 3:12 AM EST | Winter Weather Advisory | MQT | 18 hr |
| Feb 10, 4:07 AM EST | Winter Weather Advisory | MQT | 27 hr |
| Feb 11, 4:51 AM EST | Winter Storm Warning | MQT | 38 hr |
| Feb 12, 4:14 PM EST | Blizzard Warning | MQT | 54 hr |
| Feb 14, 9:59 PM EST | Winter Weather Advisory | MQT | 9 hr |
| Feb 16, 4:09 PM EST | Winter Weather Advisory | MQT | 3 days |
| Feb 20, 2:27 AM EST | Wind Chill Advisory | MQT | 8 hr |
| Feb 21, 3:50 AM EST | Wind Chill Advisory | MQT | 56 hr |
| Feb 24, 5:21 PM EST | Special Weather Statement | MQT | 84 min |
| Feb 25, 2:34 PM EST | Wind Chill Advisory | MQT | 20 hr |
| Mar 2, 3:58 PM EST | Winter Weather Advisory | MQT | 25 hr |
| Apr 9, 4:16 PM EDT | Winter Weather Advisory | MQT | 22 hr |
| May 3, 7:19 PM EDT | Special Weather Statement | MQT | 56 min |
| May 28, 4:31 AM EDT | Dense Fog Advisory | MQT | 4 hr |
| May 30, 4:27 AM EDT | Frost Advisory | MQT | 28 hr |
| May 31, 3:11 PM EDT | Freeze Warning | MQT | 17 hr |
| Jun 1, 2:37 PM EDT | Frost Advisory | MQT | 17 hr |
| Jun 10, 2:40 AM EDT | Special Weather Statement | MQT | 65 min |
| Jun 24, 2:58 PM EDT | Special Weather Statement | MQT | 47 min |
| Jun 24, 3:10 PM EDT | Severe Thunderstorm Warning | MQT | 31 min |
| Jul 30, 4:16 AM EDT | Beach Hazards Statement | MQT | 16 hr |
| Aug 2, 7:57 AM EDT | Severe Thunderstorm Warning | MQT | 48 min |
| Aug 2, 8:13 AM EDT | Severe Thunderstorm Warning | MQT | 47 min |
| Aug 14, 12:01 PM EDT | Special Weather Statement | MQT | 59 min |
| Aug 14, 12:29 PM EDT | Special Weather Statement | MQT | 31 min |
| Aug 19, 2:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 20, 3:44 AM EDT | Beach Hazards Statement | MQT | 17 hr |
| Aug 24, 5:29 AM EDT | Beach Hazards Statement | MQT | 17 hr |
| Aug 25, 4:59 AM EDT | Beach Hazards Statement | MQT | 17 hr |
| Sep 6, 9:11 PM EDT | Special Weather Statement | MQT | 49 min |
| Sep 12, 3:26 PM EDT | Frost Advisory | MQT | 18 hr |
| Sep 18, 4:12 AM EDT | Beach Hazards Statement | MQT | 14 hr |
| Sep 19, 4:18 AM EDT | Beach Hazards Statement | MQT | 16 hr |
| Sep 29, 10:50 AM EDT | Frost Advisory | MQT | 22 hr |
| Sep 30, 4:03 PM EDT | Frost Advisory | MQT | 17 hr |
| Oct 1, 2:44 PM EDT | Frost Advisory | MQT | 18 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 17, 9:48 PM EST | Lake Effect Snow Advisory | MQT | 45 hr |
| Dec 23, 4:50 AM EST | Wind Advisory | MQT | 35 hr |
| Dec 27, 4:15 AM EST | Winter Storm Watch | MQT | 11 hr |
| Dec 27, 3:37 PM EST | Winter Storm Warning | MQT | 40 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 |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 7 |
| Winter | |
| Blizzard Warning | 1 |
| Lake Effect Snow Warning | 2 |
| Winter Storm Warning | 2 |
| Lake Effect Snow Watch | 1 |
| Winter Storm Watch | 1 |
| Lake Effect Snow Advisory | 5 |
| Winter Weather Advisory | 7 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 6 |
| Wind Chill Advisory | 6 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Lakeshore Flood Advisory | 2 |
| Beach Hazards Statement | 6 |
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.