Alert archive / Michigan / Alpena County
Weather alerts in Alpena County, Michigan, 2018
68 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Alpena County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 68
- Warnings
- 15
- Watches
- 6
- Advisories
- 25
- Busiest month
- August11 alerts
- Busiest day
- December 21, 20184 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Alpena County in 2018 had a tornado report inside them.
Alpena County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 4 | 2 | 50% | 2 | 100% | 31 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Gaylord, MI: tornado warnings | 3 | 1 | 67% | 5 | 20% | 1 min |
| NWS Gaylord, MI: severe thunderstorm warnings | 45 | 30 | 33% | 70 | 79% | 22 min |
| NWS Gaylord, MI: flash flood warnings | 4 | 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, 3:49 AM EST | Wind Chill Advisory | APX | 32 hr |
| Jan 4, 3:40 PM EST | Wind Chill Warning | APX | 44 hr |
| Jan 4, 3:40 PM EST | Wind Chill Advisory | APX | 44 hr |
| Jan 15, 1:52 AM EST | Winter Weather Advisory | APX | 23 hr |
| Jan 21, 1:40 PM EST | Winter Weather Advisory | APX | 46 hr |
| Feb 2, 2:35 PM EST | Winter Weather Advisory | APX | 42 hr |
| Feb 10, 2:07 PM EST | Winter Weather Advisory | APX | 24 hr |
| Feb 18, 3:29 PM EST | Winter Weather Advisory | APX | 52 hr |
| Feb 22, 3:17 PM EST | Winter Weather Advisory | APX | 20 hr |
| Feb 24, 3:36 PM EST | Wind Advisory | APX | 27 hr |
| Mar 7, 1:47 AM EST | Winter Weather Advisory | APX | 34 hr |
| Mar 7, 11:36 AM EST | Winter Storm Warning | APX | 14 hr |
| Mar 30, 2:58 PM EDT | Wind Advisory | APX | 32 hr |
| Apr 2, 3:17 AM EDT | Winter Storm Watch | APX | 12 hr |
| Apr 2, 3:43 PM EDT | Winter Storm Warning | APX | 46 hr |
| Apr 5, 3:56 PM EDT | Winter Weather Advisory | APX | 24 hr |
| Apr 12, 4:05 AM EDT | Winter Storm Watch | APX | 48 hr |
| Apr 13, 4:32 PM EDT | Winter Storm Warning | APX | 71 hr |
| Apr 30, 11:18 AM EDT | Fire Weather Watch | APX | 9 hr |
| Apr 30, 3:08 PM EDT | Red Flag Warning | APX | 29 hr |
| May 10, 3:36 AM EDT | Freeze Warning | APX | 29 hr |
| May 11, 3:30 PM EDT | Frost Advisory | APX | 17 hr |
| May 12, 10:23 AM EDT | Frost Advisory | APX | 21 hr |
| May 20, 3:13 AM EDT | Frost Advisory | APX | 28 hr |
| May 26, 4:47 PM EDT | Severe Thunderstorm Warning | APX | 25 min |
| May 27, 2:46 PM EDT | Special Weather Statement | APX | 59 min |
| May 27, 3:12 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 31, 10:36 AM EDT | Beach Hazards Statement | APX | 5 hr |
| Jun 3, 4:22 PM EDT | Special Weather Statement | APX | 53 min |
| Jun 11, 4:13 AM EDT | Red Flag Warning | APX | 16 hr |
| Jun 21, 3:50 AM EDT | Beach Hazards Statement | APX | 16 hr |
| Jun 29, 3:57 PM EDT | Excessive Heat Warning | APX | 36 hr |
| Jul 1, 3:28 AM EDT | Heat Advisory | APX | 17 hr |
| Jul 1, 9:57 PM EDT | Special Weather Statement | APX | 48 min |
| Jul 5, 10:10 PM EDT | Beach Hazards Statement | APX | 14 hr |
| Jul 6, 3:49 AM EDT | Red Flag Warning | APX | 16 hr |
| Jul 16, 2:22 PM EDT | Severe Thunderstorm Warning | APX | 38 min |
| Aug 1, 2:35 PM EDT | Special Weather Statement | APX | 3 hr |
| Aug 1, 5:54 PM EDT | Special Weather Statement | APX | 2 hr |
| Aug 4, 3:28 AM EDT | Special Weather Statement | APX | 32 min |
| Aug 5, 4:16 PM EDT | Special Weather Statement | APX | 119 min |
| Aug 15, 3:32 PM EDT | Special Weather Statement | APX | 58 min |
| Aug 28, 2:10 AM EDT | Severe Thunderstorm Warning | APX | 65 min |
| Aug 28, 12:13 PM EDT | Flood Watch | APX | 18 hr |
| Aug 28, 6:23 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 28, 8:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Aug 28, 8:57 PM EDT | Special Weather Statement | APX | 33 min |
| Aug 28, 9:02 PM EDT | Tornado Warning | APX | 8 min |
| Sep 5, 2:42 PM EDT | Special Weather Statement | APX | 78 min |
| Sep 8, 3:55 AM EDT | Beach Hazards Statement | APX | 66 hr |
| Sep 20, 4:03 AM EDT | Beach Hazards Statement | APX | 12 hr |
| Sep 20, 9:53 PM EDT | Beach Hazards Statement | APX | 29 hr |
| Sep 21, 4:31 AM EDT | Wind Advisory | APX | 17 hr |
| Sep 23, 10:21 PM EDT | Beach Hazards Statement | APX | 34 hr |
| Oct 4, 2:52 AM EDT | Severe Thunderstorm Warning | APX | 23 min |
| Nov 8, 3:57 PM EST | Winter Weather Advisory | APX | 39 hr |
| Nov 15, 5:27 PM EST | Winter Weather Advisory | APX | 17 hr |
| Nov 24, 3:49 AM EST | Winter Storm Watch | APX | 24 hr |
| Nov 25, 4:08 AM EST | Winter Weather Advisory | APX | 33 hr |
| Dec 16, 5:39 AM EST | Freezing Fog Advisory | APX | 5 hr |
| Dec 20, 11:04 PM EST | Dense Fog Advisory | APX | 6 hr |
| Dec 21, 4:30 PM EST | Special Weather Statement | APX | 30 min |
| Dec 21, 4:33 PM EST | Special Weather Statement | APX | 12 hr |
| Dec 21, 5:26 PM EST | Winter Weather Advisory | APX | 4 hr |
| Dec 27, 5:46 PM EST | Winter Weather Advisory | APX | 3 hr |
| Dec 30, 12:42 PM EST | Winter Weather Advisory | APX | 36 hr |
| Dec 31, 10:23 AM EST | Winter Storm Warning | APX | 14 hr |
| Dec 31, 12:50 PM EST | Mesoscale Discussion | SPC | 6 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 | 4 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 12 |
| Flooding | |
| Flood Watch | 1 |
| Winter | |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 14 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Warning | 1 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Freezing Fog Advisory | 1 |
| Coast and beach | |
| Beach Hazards Statement | 7 |
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.