Alert archive / Michigan / Cass County
Weather alerts in Cass County, Michigan, 2022
98 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cass County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 98
- Warnings
- 28
- Watches
- 12
- Advisories
- 28
- Busiest month
- July22 alerts
- Busiest day
- June 13, 20225 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Cass County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 14 | 11 | 21% | 8 | 100% | 19 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: tornado warnings | 2 | 0 | 100% | 2 | 0% | |
| NWS Northern Indiana: severe thunderstorm warnings | 105 | 63 | 40% | 385 | 75% | 25 min |
| NWS Northern Indiana: flash flood warnings | 9 | 3 | 67% | 14 | 71% | 109 min |
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 4, 2:13 PM EST | Winter Weather Advisory | IWX | 38 hr |
| Jan 6, 4:04 AM EST | Winter Storm Warning | IWX | 36 hr |
| Jan 8, 3:48 AM EST | Winter Weather Advisory | IWX | 24 hr |
| Jan 17, 10:34 AM EST | Winter Weather Advisory | IWX | 10 hr |
| Jan 22, 2:53 PM EST | Winter Weather Advisory | IWX | 27 hr |
| Jan 23, 8:27 PM EST | Winter Weather Advisory | IWX | 41 hr |
| Jan 31, 4:09 AM EST | Winter Storm Watch | IWX | 30 hr |
| Jan 31, 3:21 PM EST | Winter Storm Warning | IWX | 3 days |
| Feb 2, 8:11 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 11, 3:44 PM EST | Winter Weather Advisory | IWX | 54 hr |
| Feb 13, 3:44 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Feb 15, 3:30 AM EST | Flood Watch | IWX | 64 hr |
| Feb 15, 4:06 PM EST | Winter Storm Watch | IWX | 23 hr |
| Feb 16, 3:41 AM EST | Wind Advisory | IWX | 17 hr |
| Feb 16, 2:56 PM EST | Winter Storm Warning | IWX | 33 hr |
| Feb 16, 10:42 PM EST | Areal Flood Advisory | IWX | 20 hr |
| Feb 17, 2:12 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 18, 11:54 AM EST | Winter Weather Advisory | IWX | 22 hr |
| Feb 23, 2:44 PM EST | Winter Weather Advisory | IWX | 41 hr |
| Mar 5, 3:44 AM EST | Wind Advisory | IWX | 35 hr |
| Mar 6, 12:53 AM EST | Mesoscale Discussion | SPC | 67 min |
| Mar 6, 1:04 AM EST | Severe Thunderstorm Warning | IWX | 41 min |
| Mar 23, 4:48 PM EDT | Special Weather Statement | IWX | 42 min |
| Apr 13, 3:38 PM EDT | Wind Advisory | IWX | 28 hr |
| Apr 24, 2:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Apr 24, 3:54 PM EDT | Special Weather Statement | IWX | 36 min |
| Apr 26, 3:50 AM EDT | Freeze Warning | IWX | 29 hr |
| Apr 27, 3:32 AM EDT | Freeze Warning | IWX | 28 hr |
| May 21, 6:47 AM EDT | Special Weather Statement | IWX | 58 min |
| May 21, 7:24 AM EDT | Special Weather Statement | IWX | 51 min |
| May 25, 4:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| May 25, 7:13 PM EDT | Severe Thunderstorm Warning | IWX | 33 min |
| May 25, 8:10 PM EDT | Special Weather Statement | IWX | 50 min |
| Jun 13, 2:01 AM EDT | Excessive Heat Watch | IWX | 13 hr |
| Jun 13, 3:25 PM EDT | Excessive Heat Warning | IWX | 56 hr |
| Jun 13, 5:49 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 13, 6:21 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 13, 7:41 PM EDT | Severe Thunderstorm Warning | IWX | 49 min |
| Jun 13, 8:07 PM EDT | Severe Thunderstorm Warning | IWX | 23 min |
| Jun 13, 8:54 PM EDT | Severe Thunderstorm Warning | IWX | 51 min |
| Jun 13, 9:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 13, 11:44 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jun 14, 1:06 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 21, 3:17 AM EDT | Heat Advisory | IWX | 17 hr |
| Jul 4, 3:08 PM EDT | Heat Advisory | IWX | 31 hr |
| Jul 4, 10:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 5, 12:25 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 5, 12:52 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 5, 1:12 AM EDT | Special Weather Statement | GRR | 33 min |
| Jul 5, 2:02 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 5, 10:58 PM EDT | Areal Flood Warning | IWX | 71 min |
| Jul 6, 12:09 AM EDT | Flash Flood Warning | IWX | 6 hr |
| Jul 6, 12:43 AM EDT | Flood Watch | IWX | 14 hr |
| Jul 6, 6:07 AM EDT | Areal Flood Warning | IWX | 6 hr |
| Jul 11, 12:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 11, 8:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 17, 6:04 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Jul 21, 6:32 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 8:16 PM EDT | Severe Thunderstorm Warning | IWX | 44 min |
| Jul 21, 8:55 PM EDT | Severe Thunderstorm Warning | IWX | 36 min |
| Jul 21, 9:18 PM EDT | Severe Thunderstorm Warning | IWX | 42 min |
| Jul 21, 9:45 PM EDT | Severe Thunderstorm Warning | IWX | 30 min |
| Jul 23, 2:06 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 6:35 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 23, 6:43 AM EDT | Areal Flood Advisory | IWX | 4 hr |
| Jul 23, 6:57 AM EDT | Severe Thunderstorm Warning | IWX | 63 min |
| Aug 2, 2:57 PM EDT | Heat Advisory | IWX | 28 hr |
| Aug 3, 2:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Aug 3, 2:25 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 3, 4:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Aug 3, 4:19 PM EDT | Severe Thunderstorm Warning | IWX | 56 min |
| Aug 20, 10:33 PM EDT | Areal Flood Warning | IWX | 3 hr |
| Aug 29, 1:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 2:34 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 29, 2:39 PM EDT | Severe Thunderstorm Warning | IWX | 66 min |
| Aug 29, 3:37 PM EDT | Severe Thunderstorm Warning | IWX | 42 min |
| Aug 29, 3:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 13, 10:34 PM EDT | Dense Fog Advisory | IWX | 10 hr |
| Sep 15, 3:37 AM EDT | Dense Fog Advisory | IWX | 6 hr |
| Sep 20, 12:10 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Sep 20, 1:18 PM EDT | Severe Thunderstorm Warning | IWX | 42 min |
| Sep 20, 2:07 PM EDT | Special Weather Statement | IWX | 38 min |
| Oct 13, 3:25 PM EDT | Freeze Warning | IWX | 18 hr |
| Oct 17, 5:21 PM EDT | Winter Weather Advisory | IWX | 8 hr |
| Oct 31, 4:30 AM EDT | Dense Fog Advisory | IWX | 7 hr |
| Nov 4, 3:41 AM EDT | Wind Advisory | IWX | 40 hr |
| Nov 12, 10:29 AM EST | Winter Weather Advisory | IWX | 27 hr |
| Nov 15, 4:01 AM EST | Winter Storm Watch | IWX | 10 hr |
| Nov 15, 2:21 PM EST | Winter Storm Warning | IWX | 44 hr |
| Nov 17, 9:10 AM EST | Winter Weather Advisory | IWX | 39 hr |
| Nov 19, 3:14 AM EST | Winter Weather Advisory | IWX | 28 hr |
| Nov 19, 1:56 PM EST | Winter Storm Warning | IWX | 17 hr |
| Nov 29, 11:33 AM EST | Wind Advisory | IWX | 16 hr |
| Dec 2, 1:19 PM EST | Wind Advisory | IWX | 21 hr |
| Dec 20, 4:10 AM EST | Winter Storm Watch | IWX | 32 hr |
| Dec 21, 12:30 PM EST | Blizzard Warning | IWX | 3 days |
| Dec 22, 4:39 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 24, 6:53 PM EST | Winter Weather Advisory | IWX | 15 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 | 14 |
| Severe Thunderstorm Watch | 5 |
| Mesoscale Discussion | 23 |
| Special Weather Statement | 7 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 1 |
| Flood Watch | 2 |
| Areal Flood Advisory | 3 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 13 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 3 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20212023
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.