Alert archive / Michigan / Delta County
Weather alerts in Delta County, Michigan, 2019
93 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 93
- Warnings
- 14
- Watches
- 9
- Advisories
- 47
- Busiest month
- February20 alerts
- Busiest day
- August 2, 20194 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, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 0 | 100% | 7 | 0% | |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2019
| 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 | 27 | 11 | 59% | 50 | 64% | 19 min |
| NWS Marquette, MI: flash flood warnings | 1 | 0 | 100% | 4 | 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 6, 4:17 AM EST | Winter Storm Warning | MQT | 39 hr |
| Jan 6, 4:17 AM EST | Winter Weather Advisory | MQT | 34 hr |
| Jan 7, 10:41 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 21, 3:39 PM EST | Winter Weather Advisory | MQT | 30 hr |
| Jan 23, 3:37 AM EST | Winter Weather Advisory | MQT | 15 hr |
| Jan 24, 4:37 AM EST | Wind Chill Advisory | MQT | 54 hr |
| Jan 24, 4:37 AM EST | Winter Weather Advisory | MQT | 32 hr |
| Jan 25, 2:54 PM EST | Wind Chill Advisory | MQT | 20 hr |
| Jan 26, 2:54 PM EST | Wind Chill Advisory | MQT | 21 hr |
| Jan 27, 2:56 PM EST | Winter Weather Advisory | MQT | 24 hr |
| Jan 28, 2:54 PM EST | Wind Chill Warning | MQT | 69 hr |
| Jan 28, 2:54 PM EST | Winter Weather Advisory | MQT | 52 hr |
| Feb 1, 4:29 AM EST | Wind Chill Advisory | MQT | 5 hr |
| Feb 2, 4:05 AM EST | Winter Weather Advisory | MQT | 33 hr |
| Feb 3, 5:08 AM EST | Winter Storm Watch | MQT | 10 hr |
| Feb 3, 3:25 PM EST | Ice Storm Warning | MQT | 26 hr |
| Feb 4, 8:06 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 5, 4:45 AM EST | Winter Weather Advisory | MQT | 25 hr |
| Feb 5, 1:33 PM EST | Winter Storm Warning | MQT | 16 hr |
| Feb 5, 7:24 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 6, 5:44 AM EST | Winter Storm Watch | MQT | 11 hr |
| Feb 6, 4:32 PM EST | Winter Storm Warning | MQT | 45 hr |
| Feb 8, 1:41 PM EST | Wind Chill Advisory | MQT | 20 hr |
| Feb 11, 4:27 AM EST | Winter Storm Warning | MQT | 57 hr |
| Feb 14, 4:04 AM EST | Winter Weather Advisory | MQT | 49 hr |
| Feb 19, 3:25 PM EST | Winter Storm Warning | MQT | 31 hr |
| Feb 19, 3:25 PM EST | Winter Weather Advisory | MQT | 13 hr |
| Feb 22, 4:10 AM EST | Winter Storm Watch | MQT | 25 hr |
| Feb 22, 3:29 PM EST | Winter Weather Advisory | MQT | 24 hr |
| Feb 23, 5:20 AM EST | Winter Storm Warning | MQT | 38 hr |
| Feb 24, 7:40 PM EST | Winter Weather Advisory | MQT | 16 hr |
| Feb 26, 8:01 PM EST | Winter Weather Advisory | MQT | 17 hr |
| Mar 4, 3:46 AM EST | Wind Chill Advisory | MQT | 6 hr |
| Mar 9, 3:35 AM EST | Winter Weather Advisory | MQT | 43 hr |
| Mar 12, 4:16 PM EDT | Flood Watch | MQT | 60 hr |
| Mar 14, 9:31 AM EDT | Dense Fog Advisory | MQT | 10 hr |
| Apr 6, 8:46 PM EDT | Dense Fog Advisory | MQT | 12 hr |
| Apr 9, 4:14 AM EDT | Winter Storm Watch | MQT | 36 hr |
| Apr 10, 4:32 PM EDT | Winter Weather Advisory | MQT | 42 hr |
| Apr 17, 10:26 PM EDT | River Flood Advisory | MQT | 9 days |
| Apr 17, 11:14 PM EDT | Areal Flood Advisory | MQT | 3 hr |
| Apr 26, 4:21 AM EDT | Wind Advisory | MQT | 22 hr |
| May 22, 9:22 PM EDT | Special Weather Statement | MQT | 38 min |
| May 22, 10:05 PM EDT | Special Weather Statement | MQT | 40 min |
| May 25, 2:51 AM EDT | Special Weather Statement | MQT | 24 min |
| May 30, 3:24 PM EDT | Frost Advisory | MQT | 17 hr |
| Jun 2, 3:15 AM EDT | Frost Advisory | MQT | 29 hr |
| Jul 10, 6:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 11:09 PM EDT | Special Weather Statement | MQT | 66 min |
| Jul 29, 1:18 AM EDT | Special Weather Statement | MQT | 42 min |
| Aug 2, 4:41 PM EDT | Special Weather Statement | MQT | 34 min |
| Aug 2, 6:02 PM EDT | Special Weather Statement | MQT | 43 min |
| Aug 2, 6:53 PM EDT | Severe Thunderstorm Warning | MQT | 37 min |
| Aug 2, 7:07 PM EDT | Areal Flood Advisory | MQT | 3 hr |
| Aug 5, 2:45 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 5, 4:31 PM EDT | Special Weather Statement | MQT | 44 min |
| Aug 7, 2:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 4:06 PM EDT | Special Weather Statement | MQT | 39 min |
| Aug 27, 4:20 PM EDT | Special Weather Statement | MQT | 40 min |
| Aug 27, 4:50 PM EDT | Special Weather Statement | MQT | 40 min |
| Sep 16, 9:55 PM EDT | Dense Fog Advisory | MQT | 12 hr |
| Sep 19, 12:41 AM EDT | Special Weather Statement | MQT | 49 min |
| Sep 19, 2:28 AM EDT | Special Weather Statement | MQT | 47 min |
| Sep 19, 3:22 AM EDT | Special Weather Statement | MQT | 53 min |
| Sep 19, 4:46 AM EDT | Areal Flood Advisory | MQT | 5 hr |
| Sep 20, 1:48 AM EDT | Dense Fog Advisory | MQT | 8 hr |
| Sep 25, 12:20 AM EDT | Special Weather Statement | MQT | 40 min |
| Sep 30, 2:07 PM EDT | Special Weather Statement | MQT | 38 min |
| Oct 4, 5:04 AM EDT | Frost Advisory | MQT | 27 hr |
| Oct 20, 4:42 PM EDT | Lakeshore Flood Advisory | MQT | 51 hr |
| Oct 28, 3:43 PM EDT | Winter Weather Advisory | MQT | 16 hr |
| Nov 5, 3:15 AM EST | Winter Weather Advisory | MQT | 70 hr |
| Nov 10, 7:18 AM EST | Winter Weather Advisory | MQT | 49 hr |
| Nov 12, 10:21 PM EST | Winter Weather Advisory | MQT | 22 hr |
| Nov 25, 3:40 AM EST | Winter Storm Watch | MQT | 35 hr |
| Nov 26, 4:20 AM EST | Winter Storm Warning | MQT | 45 hr |
| Nov 26, 4:20 AM EST | Winter Weather Advisory | MQT | 39 hr |
| Nov 26, 6:25 AM EST | Lakeshore Flood Advisory | MQT | 42 hr |
| Nov 27, 6:30 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Nov 29, 4:02 AM EST | Winter Storm Watch | MQT | 24 hr |
| Nov 29, 3:35 PM EST | Lakeshore Flood Advisory | MQT | 49 hr |
| Nov 29, 4:15 PM EST | Winter Storm Warning | MQT | 51 hr |
| Nov 30, 3:36 PM EST | Lakeshore Flood Warning | MQT | 21 hr |
| Dec 1, 2:36 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 6, 4:24 PM EST | Lakeshore Flood Advisory | MQT | 49 hr |
| Dec 8, 3:59 AM EST | Winter Weather Advisory | MQT | 42 hr |
| Dec 10, 3:51 AM EST | Wind Chill Advisory | MQT | 32 hr |
| Dec 11, 2:57 PM EST | Winter Storm Warning | MQT | 28 hr |
| Dec 24, 3:13 PM EST | Dense Fog Advisory | MQT | 48 hr |
| Dec 28, 4:20 AM EST | Winter Weather Advisory | MQT | 30 hr |
| Dec 28, 4:27 AM EST | Lakeshore Flood Advisory | MQT | 42 hr |
| Dec 29, 4:14 AM EST | Winter Storm Watch | MQT | 6 hr |
| Dec 29, 10:39 AM EST | Winter Storm Warning | MQT | 44 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 | 1 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 7 |
| Special Weather Statement | 16 |
| Flooding | |
| Flood Watch | 1 |
| Areal Flood Advisory | 3 |
| River Flood Advisory | 1 |
| Winter | |
| Ice Storm Warning | 1 |
| Winter Storm Warning | 10 |
| Winter Storm Watch | 7 |
| Winter Weather Advisory | 22 |
| Cold | |
| Wind Chill Warning | 1 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 7 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
| Coast and beach | |
| Lakeshore Flood Warning | 1 |
| Lakeshore Flood Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.