Alert archive / Michigan / Sanilac County
Weather alerts in Sanilac County, Michigan, 2016
93 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sanilac County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 93
- Warnings
- 13
- Watches
- 6
- Advisories
- 31
- Busiest month
- July17 alerts
- Busiest day
- March 16, 20165 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Sanilac County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 6 | 4 | 33% | 3 | 100% | 4 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Detroit, MI: tornado warnings | 3 | 0 | 100% | 0 | ||
| NWS Detroit, MI: severe thunderstorm warnings | 40 | 29 | 28% | 96 | 70% | 22 min |
| NWS Detroit, 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, 3:41 PM EST | Lake Effect Snow Advisory | DTX | 16 hr |
| Jan 4, 8:04 AM EST | Lake Effect Snow Warning | DTX | 8 hr |
| Jan 9, 4:06 AM EST | Winter Weather Advisory | DTX | 33 hr |
| Jan 11, 3:34 PM EST | Winter Weather Advisory | DTX | 24 hr |
| Feb 8, 3:37 AM EST | Winter Weather Advisory | DTX | 41 hr |
| Feb 9, 10:50 AM EST | Winter Storm Warning | DTX | 10 hr |
| Feb 12, 3:22 AM EST | Wind Chill Advisory | DTX | 32 hr |
| Feb 19, 3:37 AM EST | Wind Advisory | DTX | 24 hr |
| Feb 22, 3:16 PM EST | Winter Storm Watch | DTX | 24 hr |
| Feb 23, 3:33 PM EST | Winter Storm Warning | DTX | 43 hr |
| Feb 29, 2:21 PM EST | Winter Weather Advisory | DTX | 14 hr |
| Feb 29, 3:14 PM EST | Wind Advisory | DTX | 3 hr |
| Mar 1, 4:09 AM EST | Winter Storm Warning | DTX | 19 hr |
| Mar 1, 1:06 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 1, 11:02 PM EST | Winter Weather Advisory | DTX | 5 hr |
| Mar 6, 3:20 AM EST | Freezing Fog Advisory | DTX | 6 hr |
| Mar 15, 8:45 PM EDT | Wind Advisory | DTX | 23 hr |
| Mar 16, 2:06 AM EDT | Special Weather Statement | DTX | 114 min |
| Mar 16, 6:17 AM EDT | Special Weather Statement | DTX | 118 min |
| Mar 16, 1:01 PM EDT | Special Weather Statement | DTX | 29 min |
| Mar 16, 2:00 PM EDT | Special Weather Statement | DTX | 60 min |
| Mar 17, 4:06 AM EDT | Special Weather Statement | DTX | 54 min |
| Mar 21, 3:54 PM EDT | Winter Storm Watch | DTX | 35 hr |
| Mar 23, 2:26 AM EDT | Winter Storm Warning | DTX | 25 hr |
| Mar 24, 2:59 AM EDT | Winter Weather Advisory | DTX | 7 hr |
| Mar 28, 7:03 AM EDT | Areal Flood Advisory | DTX | 3 hr |
| Mar 31, 6:22 PM EDT | Areal Flood Advisory | DTX | 3 hr |
| Mar 31, 7:32 PM EDT | Special Weather Statement | DTX | 43 min |
| Apr 2, 4:51 AM EDT | Winter Weather Advisory | DTX | 16 hr |
| Apr 2, 3:23 PM EDT | Winter Storm Watch | DTX | 13 hr |
| Apr 3, 4:40 AM EDT | Winter Storm Warning | DTX | 20 hr |
| Apr 5, 4:21 AM EDT | Winter Weather Advisory | DTX | 32 hr |
| Apr 9, 4:27 PM EDT | Winter Weather Advisory | DTX | 25 hr |
| May 14, 3:33 PM EDT | Frost Advisory | DTX | 16 hr |
| May 15, 3:14 PM EDT | Frost Advisory | DTX | 17 hr |
| May 17, 2:12 PM EDT | Frost Advisory | DTX | 18 hr |
| May 28, 1:21 PM EDT | Special Weather Statement | DTX | 54 min |
| May 28, 3:25 PM EDT | Special Weather Statement | DTX | 80 min |
| May 29, 2:58 PM EDT | Special Weather Statement | DTX | 77 min |
| May 29, 4:22 PM EDT | Special Weather Statement | DTX | 53 min |
| May 29, 4:50 PM EDT | Severe Thunderstorm Warning | DTX | 40 min |
| Jun 5, 10:00 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 5, 10:58 AM EDT | Special Weather Statement | DTX | 47 min |
| Jun 5, 1:25 PM EDT | Special Weather Statement | DTX | 80 min |
| Jun 6, 1:41 PM EDT | Special Weather Statement | DTX | 64 min |
| Jun 7, 3:53 PM EDT | Beach Hazards Statement | DTX | 24 hr |
| Jun 12, 4:04 AM EDT | Beach Hazards Statement | DTX | 14 hr |
| Jun 15, 3:52 PM EDT | Beach Hazards Statement | DTX | 30 hr |
| Jun 16, 4:45 AM EDT | Special Weather Statement | DTX | 2 hr |
| Jun 16, 5:49 AM EDT | Special Weather Statement | DTX | 116 min |
| Jun 20, 10:42 AM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 27, 3:53 PM EDT | Beach Hazards Statement | DTX | 28 hr |
| Jul 7, 11:14 PM EDT | Severe Thunderstorm Warning | DTX | 55 min |
| Jul 8, 12:32 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 8, 3:46 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 8, 4:53 PM EDT | Severe Thunderstorm Warning | DTX | 67 min |
| Jul 8, 5:23 PM EDT | Severe Thunderstorm Warning | DTX | 52 min |
| Jul 8, 9:51 PM EDT | Beach Hazards Statement | DTX | 24 hr |
| Jul 13, 6:47 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jul 13, 7:43 PM EDT | Special Weather Statement | DTX | 62 min |
| Jul 20, 3:10 PM EDT | Heat Advisory | DTX | 53 hr |
| Jul 21, 9:45 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 21, 4:16 PM EDT | Special Weather Statement | DTX | 59 min |
| Jul 27, 1:46 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 5:36 PM EDT | Special Weather Statement | DTX | 54 min |
| Jul 27, 8:11 PM EDT | Beach Hazards Statement | DTX | 25 hr |
| Jul 28, 9:30 PM EDT | Beach Hazards Statement | DTX | 24 hr |
| Jul 30, 4:48 AM EDT | Beach Hazards Statement | DTX | 17 hr |
| Jul 31, 2:10 AM EDT | Special Weather Statement | DTX | 65 min |
| Aug 6, 3:24 AM EDT | Beach Hazards Statement | DTX | 13 hr |
| Aug 11, 4:00 PM EDT | Special Weather Statement | DTX | 45 min |
| Aug 15, 2:40 PM EDT | Flood Watch | DTX | 20 hr |
| Aug 15, 9:57 PM EDT | Beach Hazards Statement | DTX | 24 hr |
| Aug 16, 3:24 AM EDT | Areal Flood Advisory | DTX | 7 hr |
| Aug 17, 12:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Aug 17, 1:32 PM EDT | Special Weather Statement | DTX | 118 min |
| Aug 24, 6:02 PM EDT | Special Weather Statement | DTX | 58 min |
| Aug 25, 9:28 AM EDT | Special Weather Statement | DTX | 92 min |
| Aug 29, 3:10 AM EDT | Dense Fog Advisory | DTX | 6 hr |
| Aug 31, 10:16 PM EDT | Beach Hazards Statement | DTX | 24 hr |
| Sep 7, 1:37 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 10, 5:26 PM EDT | Severe Thunderstorm Warning | DTX | 50 min |
| Oct 6, 12:46 AM EDT | Dense Fog Advisory | DTX | 10 hr |
| Oct 9, 2:05 PM EDT | Frost Advisory | DTX | 19 hr |
| Oct 12, 7:43 PM EDT | Special Weather Statement | DTX | 47 min |
| Oct 13, 3:35 AM EDT | Frost Advisory | DTX | 29 hr |
| Oct 21, 10:55 PM EDT | Frost Advisory | DTX | 8 hr |
| Nov 6, 10:40 PM EST | Dense Fog Advisory | DTX | 11 hr |
| Nov 16, 9:29 PM EST | Dense Fog Advisory | DTX | 13 hr |
| Nov 18, 8:10 PM EST | Severe Thunderstorm Warning | DTX | 65 min |
| Dec 10, 3:26 PM EST | Winter Weather Advisory | DTX | 36 hr |
| Dec 11, 3:59 AM EST | Winter Storm Warning | DTX | 23 hr |
| Dec 16, 4:05 AM EST | Winter Weather Advisory | DTX | 29 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 | 6 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 8 |
| Special Weather Statement | 24 |
| Flooding | |
| Flood Watch | 1 |
| Areal Flood Advisory | 3 |
| Winter | |
| Lake Effect Snow Warning | 1 |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 3 |
| Lake Effect Snow Advisory | 1 |
| Winter Weather Advisory | 11 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Frost Advisory | 6 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
| Freezing Fog Advisory | 1 |
| Coast and beach | |
| Beach Hazards Statement | 11 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20152017
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.