Alert archive / Michigan / Delta County
Weather alerts in Delta County, Michigan, 2023
67 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Delta County and its neighbors
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Alerts
- 67
- Warnings
- 17
- Watches
- 7
- Advisories
- 23
- Busiest month
- July16 alerts
- Busiest day
- July 10, 20235 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Delta County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 4 | 56% | 1 | 0% | |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Marquette, MI: severe thunderstorm warnings | 34 | 16 | 53% | 54 | 63% | 22 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 2, 2:22 PM EST | Winter Weather Advisory | MQT | 59 hr |
| Jan 17, 3:33 PM EST | Winter Storm Watch | MQT | 24 hr |
| Jan 18, 3:58 PM EST | Winter Storm Warning | MQT | 30 hr |
| Jan 19, 7:48 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 19, 3:09 PM EST | Winter Weather Advisory | MQT | 43 hr |
| Feb 21, 2:50 PM EST | Winter Storm Watch | MQT | 25 hr |
| Feb 22, 4:14 AM EST | Winter Storm Warning | MQT | 45 hr |
| Feb 23, 6:06 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 26, 3:24 PM EST | Winter Weather Advisory | MQT | 34 hr |
| Mar 5, 4:19 AM EST | Winter Weather Advisory | MQT | 45 hr |
| Mar 15, 3:50 AM EDT | Winter Storm Watch | MQT | 49 hr |
| Mar 17, 4:42 AM EDT | Winter Weather Advisory | MQT | 39 hr |
| Mar 25, 9:54 AM EDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 25, 11:10 AM EDT | Winter Weather Advisory | MQT | 9 hr |
| Mar 30, 4:54 AM EDT | Winter Storm Watch | MQT | 32 hr |
| Mar 30, 4:54 AM EDT | Winter Weather Advisory | MQT | 30 hr |
| Mar 30, 11:04 PM EDT | Mesoscale Discussion | SPC | 26 min |
| Mar 31, 1:12 PM EDT | Winter Storm Warning | MQT | 23 hr |
| Apr 3, 3:27 PM EDT | Winter Weather Advisory | MQT | 41 hr |
| Apr 3, 4:03 PM EDT | Lakeshore Flood Advisory | MQT | 3 days |
| Apr 5, 12:11 AM EDT | Special Weather Statement | MQT | 34 min |
| Apr 12, 10:30 AM EDT | River Flood Advisory | MQT | 4 days |
| Apr 13, 10:52 AM EDT | Areal Flood Advisory | MQT | 24 hr |
| Apr 14, 1:00 PM EDT | Areal Flood Advisory | MQT | 19 hr |
| Apr 15, 10:01 AM EDT | River Flood Warning | MQT | 4 days |
| Apr 19, 2:11 PM EDT | River Flood Advisory | MQT | 44 hr |
| Apr 21, 1:33 PM EDT | River Flood Advisory | MQT | 21 days |
| Apr 30, 3:20 PM EDT | Winter Weather Advisory | MQT | 41 hr |
| May 2, 2:56 PM EDT | Areal Flood Advisory | MQT | 6 hr |
| May 2, 9:14 PM EDT | River Flood Advisory | MQT | 8 hr |
| May 3, 5:42 AM EDT | River Flood Warning | MQT | 54 hr |
| May 5, 3:58 PM EDT | River Flood Advisory | MQT | 21 days |
| May 17, 4:01 PM EDT | Fire Weather Watch | MQT | 13 hr |
| May 18, 5:05 AM EDT | Red Flag Warning | MQT | 15 hr |
| Jun 6, 4:07 PM EDT | Red Flag Warning | MQT | 28 hr |
| Jun 7, 8:29 PM EDT | Red Flag Warning | MQT | 24 hr |
| Jul 8, 2:26 PM EDT | Special Weather Statement | MQT | 34 min |
| Jul 8, 2:46 PM EDT | Severe Thunderstorm Warning | MQT | 29 min |
| Jul 8, 3:16 PM EDT | Special Weather Statement | MQT | 29 min |
| Jul 8, 3:41 PM EDT | Special Weather Statement | MQT | 34 min |
| Jul 10, 4:42 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 10, 6:22 PM EDT | Severe Thunderstorm Warning | MQT | 53 min |
| Jul 10, 6:43 PM EDT | Severe Thunderstorm Warning | MQT | 62 min |
| Jul 10, 6:55 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 10, 7:28 PM EDT | Severe Thunderstorm Warning | MQT | 62 min |
| Jul 10, 8:14 PM EDT | Severe Thunderstorm Warning | MQT | 46 min |
| Jul 14, 5:52 PM EDT | Special Weather Statement | MQT | 23 min |
| Jul 15, 11:15 PM EDT | Special Weather Statement | MQT | 30 min |
| Jul 22, 4:10 PM EDT | Severe Thunderstorm Warning | MQT | 35 min |
| Jul 22, 5:17 PM EDT | Special Weather Statement | MQT | 28 min |
| Jul 27, 5:51 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 27, 10:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Aug 2, 3:30 PM EDT | Special Weather Statement | MQT | 45 min |
| Aug 2, 3:57 PM EDT | Severe Thunderstorm Warning | MQT | 33 min |
| Aug 2, 4:29 PM EDT | Special Weather Statement | MQT | 31 min |
| Aug 16, 11:02 AM EDT | Lakeshore Flood Advisory | MQT | 25 hr |
| Aug 17, 1:50 AM EDT | Special Weather Statement | MQT | 25 min |
| Aug 25, 2:32 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Aug 25, 4:16 PM EDT | Severe Thunderstorm Warning | MQT | 44 min |
| Aug 25, 4:26 PM EDT | Special Weather Statement | MQT | 49 min |
| Aug 25, 4:54 PM EDT | Severe Thunderstorm Warning | MQT | 31 min |
| Aug 25, 5:17 PM EDT | Special Weather Statement | MQT | 43 min |
| Sep 6, 9:04 AM EDT | Special Weather Statement | MQT | 26 min |
| Nov 16, 4:04 AM EST | Lakeshore Flood Advisory | MQT | 24 hr |
| Dec 22, 3:12 PM EST | Dense Fog Advisory | MQT | 20 hr |
| Dec 23, 3:49 PM EST | Dense Fog Advisory | MQT | 20 hr |
| Dec 26, 5:47 PM EST | Dense Fog Advisory | MQT | 8 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 | 9 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 7 |
| Special Weather Statement | 13 |
| Flooding | |
| River Flood Warning | 2 |
| Areal Flood Advisory | 3 |
| River Flood Advisory | 5 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 9 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Coast and beach | |
| Lakeshore Flood Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.