Alert archive / Michigan / Oakland County
Weather alerts in Oakland County, Michigan, 2018
103 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Oakland County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 103
- Warnings
- 22
- Watches
- 7
- Advisories
- 35
- Busiest month
- July15 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.
Oakland County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 10 | 9 | 10% | 6 | 100% | 16 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 Detroit, MI: tornado warnings | 6 | 2 | 67% | 3 | 100% | 12 min |
| NWS Detroit, MI: severe thunderstorm warnings | 54 | 34 | 37% | 80 | 76% | 18 min |
| NWS Detroit, MI: flash flood warnings | 2 | 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 2, 3:45 PM EST | Wind Chill Advisory | DTX | 17 hr |
| Jan 3, 3:08 PM EST | Wind Chill Advisory | DTX | 69 hr |
| Jan 4, 3:42 PM EST | Wind Chill Warning | DTX | 20 hr |
| Jan 7, 4:05 PM EST | Winter Weather Advisory | DTX | 17 hr |
| Jan 11, 4:12 PM EST | Winter Weather Advisory | DTX | 26 hr |
| Jan 12, 3:04 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 21, 5:11 PM EST | Dense Fog Advisory | DTX | 11 hr |
| Jan 23, 12:37 AM EST | Special Weather Statement | DTX | 53 min |
| Jan 29, 3:29 AM EST | Winter Weather Advisory | DTX | 12 hr |
| Jan 29, 9:20 AM EST | Winter Storm Warning | DTX | 6 hr |
| Feb 3, 3:44 PM EST | Winter Weather Advisory | DTX | 27 hr |
| Feb 6, 3:28 PM EST | Winter Weather Advisory | DTX | 21 hr |
| Feb 7, 3:36 PM EST | Winter Storm Watch | DTX | 23 hr |
| Feb 8, 3:04 PM EST | Winter Weather Advisory | DTX | 31 hr |
| Feb 10, 3:06 PM EST | Winter Weather Advisory | DTX | 24 hr |
| Feb 14, 8:36 PM EST | Dense Fog Advisory | DTX | 14 hr |
| Feb 19, 4:00 AM EST | Flood Watch | DTX | 60 hr |
| Feb 20, 4:15 PM EST | River Flood Warning | DTX | 33 hr |
| Feb 25, 2:27 AM EST | Wind Advisory | DTX | 13 hr |
| Mar 1, 3:40 AM EST | Winter Storm Warning | DTX | 20 hr |
| Mar 1, 12:32 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 6, 4:00 PM EST | Winter Weather Advisory | DTX | 50 hr |
| Mar 7, 1:02 AM EST | Winter Storm Warning | DTX | 8 hr |
| Mar 30, 3:29 PM EDT | Wind Advisory | DTX | 29 hr |
| Apr 3, 5:05 PM EDT | Special Weather Statement | DTX | 25 min |
| Apr 13, 3:03 PM EDT | Winter Storm Warning | DTX | 54 hr |
| Apr 13, 10:25 PM EDT | Winter Weather Advisory | DTX | 36 hr |
| Apr 17, 6:20 AM EDT | Winter Weather Advisory | DTX | 4 hr |
| Apr 30, 3:30 PM EDT | Red Flag Warning | DTX | 29 hr |
| May 2, 9:27 PM EDT | Special Weather Statement | DTX | 48 min |
| May 3, 3:26 PM EDT | Wind Advisory | DTX | 19 hr |
| May 4, 10:20 AM EDT | High Wind Warning | DTX | 6 hr |
| May 4, 1:05 PM EDT | Severe Thunderstorm Warning | DTX | 41 min |
| May 9, 11:17 PM EDT | Special Weather Statement | DTX | 58 min |
| May 12, 3:04 AM EDT | Special Weather Statement | DTX | 86 min |
| May 12, 8:53 AM EDT | Areal Flood Advisory | DTX | 7 hr |
| May 12, 9:06 AM EDT | River Flood Warning | DTX | 37 hr |
| May 14, 4:05 AM EDT | Flood Watch | DTX | 27 hr |
| May 19, 4:44 PM EDT | Special Weather Statement | DTX | 91 min |
| May 23, 2:36 AM EDT | Dense Fog Advisory | DTX | 5 hr |
| May 26, 10:44 PM EDT | Special Weather Statement | DTX | 61 min |
| May 30, 7:47 PM EDT | Special Weather Statement | DTX | 58 min |
| Jun 16, 3:00 PM EDT | Heat Advisory | DTX | 51 hr |
| Jun 23, 5:47 PM EDT | Special Weather Statement | DTX | 73 min |
| Jun 27, 1:56 PM EDT | Special Weather Statement | DTX | 49 min |
| Jun 27, 4:23 PM EDT | Special Weather Statement | DTX | 67 min |
| Jun 29, 3:53 AM EDT | Excessive Heat Watch | DTX | 11 hr |
| Jun 29, 2:31 PM EDT | Excessive Heat Warning | DTX | 33 hr |
| Jun 30, 11:34 PM EDT | Heat Advisory | DTX | 20 hr |
| Jul 1, 3:50 PM EDT | Special Weather Statement | DTX | 40 min |
| Jul 1, 4:05 PM EDT | Special Weather Statement | DTX | 40 min |
| Jul 1, 4:32 PM EDT | Severe Thunderstorm Warning | DTX | 19 min |
| Jul 1, 4:41 PM EDT | Special Weather Statement | DTX | 49 min |
| Jul 1, 4:58 PM EDT | Severe Thunderstorm Warning | DTX | 62 min |
| Jul 4, 3:15 AM EDT | Heat Advisory | DTX | 41 hr |
| Jul 15, 8:14 PM EDT | Areal Flood Advisory | DTX | 2 hr |
| Jul 16, 1:32 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 3:35 PM EDT | Special Weather Statement | DTX | 55 min |
| Jul 16, 4:01 PM EDT | Severe Thunderstorm Warning | DTX | 61 min |
| Jul 16, 8:39 PM EDT | Special Weather Statement | DTX | 66 min |
| Jul 16, 9:05 PM EDT | Special Weather Statement | DTX | 55 min |
| Jul 16, 9:13 PM EDT | Severe Thunderstorm Warning | DTX | 36 min |
| Jul 31, 5:27 PM EDT | Flash Flood Watch | DTX | 10 hr |
| Aug 1, 1:33 AM EDT | Areal Flood Advisory | DTX | 3 hr |
| Aug 6, 1:26 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 6, 1:47 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 7, 9:29 PM EDT | Special Weather Statement | DTX | 31 min |
| Aug 12, 4:10 PM EDT | Special Weather Statement | DTX | 50 min |
| Aug 15, 8:36 PM EDT | Special Weather Statement | DTX | 39 min |
| Aug 18, 7:00 PM EDT | Areal Flood Advisory | DTX | 74 min |
| Aug 18, 7:42 PM EDT | Areal Flood Advisory | DTX | 101 min |
| Aug 27, 4:02 AM EDT | Heat Advisory | DTX | 40 hr |
| Aug 28, 8:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Sep 1, 3:45 PM EDT | Special Weather Statement | DTX | 45 min |
| Sep 1, 6:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Sep 3, 3:04 PM EDT | Flood Watch | DTX | 9 hr |
| Sep 3, 5:22 PM EDT | Special Weather Statement | DTX | 38 min |
| Sep 3, 6:02 PM EDT | Special Weather Statement | DTX | 43 min |
| Sep 3, 10:48 PM EDT | Special Weather Statement | DTX | 57 min |
| Sep 4, 3:04 AM EDT | Heat Advisory | DTX | 43 hr |
| Sep 5, 5:48 PM EDT | Special Weather Statement | DTX | 27 min |
| Sep 5, 7:57 PM EDT | Severe Thunderstorm Warning | DTX | 63 min |
| Sep 5, 8:51 PM EDT | Severe Thunderstorm Warning | DTX | 10 min |
| Sep 5, 9:37 PM EDT | Special Weather Statement | DTX | 38 min |
| Sep 14, 3:10 AM EDT | Dense Fog Advisory | DTX | 8 hr |
| Sep 21, 1:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Sep 21, 1:20 PM EDT | Special Weather Statement | DTX | 85 min |
| Sep 25, 6:21 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Oct 6, 3:08 AM EDT | Special Weather Statement | DTX | 67 min |
| Oct 6, 9:24 AM EDT | Special Weather Statement | DTX | 66 min |
| Oct 12, 3:40 PM EDT | Frost Advisory | DTX | 12 hr |
| Oct 13, 3:02 PM EDT | Frost Advisory | DTX | 17 hr |
| Oct 15, 3:47 PM EDT | Freeze Warning | DTX | 16 hr |
| Oct 17, 3:21 AM EDT | Freeze Warning | DTX | 29 hr |
| Oct 20, 11:46 AM EDT | Wind Advisory | DTX | 9 hr |
| Oct 20, 12:08 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 20, 1:39 PM EDT | Severe Thunderstorm Warning | DTX | 55 min |
| Oct 20, 1:55 PM EDT | Severe Thunderstorm Warning | DTX | 39 min |
| Oct 20, 2:20 PM EDT | Severe Thunderstorm Warning | DTX | 38 min |
| Nov 10, 1:17 AM EST | Special Weather Statement | DTX | 58 min |
| Nov 25, 3:24 AM EST | Winter Weather Advisory | DTX | 34 hr |
| Nov 30, 9:44 PM EST | Freezing Fog Advisory | DTX | 8 hr |
| Dec 14, 6:35 PM EST | Dense Fog Advisory | DTX | 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 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.