Alert archive / Michigan / Ionia County
Weather alerts in Ionia County, Michigan, 2022
64 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Ionia County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 64
- Warnings
- 9
- Watches
- 7
- Advisories
- 30
- Busiest month
- August11 alerts
- Busiest day
- August 3, 20226 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Ionia County in 2022 had a tornado report inside them.
Ionia County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 5 | 3 | 40% | 9 | 78% | 23 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Rapids, MI: tornado warnings | 2 | 0 | 100% | 0 | ||
| NWS Grand Rapids, MI: severe thunderstorm warnings | 67 | 35 | 48% | 107 | 79% | 26 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, 4:00 AM EST | Winter Weather Advisory | GRR | 66 hr |
| Jan 8, 4:01 AM EST | Winter Weather Advisory | GRR | 24 hr |
| Jan 17, 11:46 AM EST | Winter Weather Advisory | GRR | 9 hr |
| Feb 1, 3:11 AM EST | Winter Weather Advisory | GRR | 41 hr |
| Feb 16, 3:48 AM EST | Wind Advisory | GRR | 11 hr |
| Feb 18, 4:07 AM EST | Wind Advisory | GRR | 30 hr |
| Feb 20, 3:38 AM EST | Wind Advisory | GRR | 14 hr |
| Feb 21, 3:57 AM EST | Winter Weather Advisory | GRR | 42 hr |
| Feb 22, 8:38 AM EST | Special Weather Statement | GRR | 4 hr |
| Feb 24, 1:56 PM EST | Winter Weather Advisory | GRR | 18 hr |
| Mar 4, 1:47 PM EST | High Wind Watch | GRR | 22 hr |
| Mar 5, 11:33 AM EST | High Wind Warning | GRR | 25 hr |
| Mar 6, 3:54 PM EST | Winter Weather Advisory | GRR | 23 hr |
| Mar 11, 12:50 AM EST | Winter Weather Advisory | GRR | 10 hr |
| Mar 23, 7:22 PM EDT | Special Weather Statement | GRR | 53 min |
| Mar 29, 4:02 AM EDT | Winter Weather Advisory | GRR | 32 hr |
| Mar 30, 3:46 PM EDT | Wind Advisory | GRR | 19 hr |
| Apr 3, 3:53 PM EDT | Winter Weather Advisory | GRR | 23 hr |
| Apr 13, 11:01 AM EDT | Wind Advisory | GRR | 33 hr |
| Apr 24, 2:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| May 10, 3:25 AM EDT | Special Weather Statement | GRR | 65 min |
| May 11, 10:54 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 14, 6:50 PM EDT | Severe Thunderstorm Warning | GRR | 19 min |
| Jun 13, 2:07 PM EDT | Heat Advisory | GRR | 55 hr |
| Jun 13, 6:21 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 13, 11:14 PM EDT | Areal Flood Advisory | GRR | 2 hr |
| Jun 13, 11:44 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jun 16, 3:16 AM EDT | Special Weather Statement | GRR | 59 min |
| Jun 21, 3:18 AM EDT | Heat Advisory | GRR | 19 hr |
| Jul 11, 12:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 11, 8:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 11, 10:14 PM EDT | Tornado Warning | GRR | 31 min |
| Jul 23, 8:39 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 23, 10:16 PM EDT | Severe Thunderstorm Warning | GRR | 59 min |
| Aug 3, 10:52 AM EDT | Special Weather Statement | GRR | 83 min |
| Aug 3, 11:42 AM EDT | Mesoscale Discussion | SPC | 93 min |
| 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, 2:48 PM EDT | Severe Thunderstorm Warning | GRR | 57 min |
| Aug 3, 4:26 PM EDT | Areal Flood Advisory | GRR | 5 hr |
| Aug 20, 3:45 PM EDT | Special Weather Statement | GRR | 60 min |
| Aug 28, 7:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Aug 29, 2:34 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 29, 3:47 PM EDT | Severe Thunderstorm Warning | GRR | 88 min |
| Aug 29, 3:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 3, 7:32 PM EDT | Special Weather Statement | GRR | 88 min |
| Sep 21, 8:54 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Sep 21, 9:10 AM EDT | Severe Thunderstorm Warning | GRR | 50 min |
| Sep 28, 3:33 AM EDT | Frost Advisory | GRR | 29 hr |
| Sep 29, 2:57 PM EDT | Frost Advisory | GRR | 17 hr |
| Oct 2, 2:09 PM EDT | Frost Advisory | GRR | 19 hr |
| Oct 7, 3:42 AM EDT | Frost Advisory | GRR | 29 hr |
| Oct 12, 1:35 PM EDT | Special Weather Statement | GRR | 4 hr |
| Nov 1, 4:28 AM EDT | Dense Fog Advisory | GRR | 7 hr |
| Nov 4, 3:39 AM EDT | Wind Advisory | GRR | 40 hr |
| Nov 16, 3:56 AM EST | Winter Storm Watch | GRR | 12 hr |
| Nov 16, 3:31 PM EST | Winter Storm Warning | GRR | 4 days |
| Nov 29, 2:10 PM EST | Wind Advisory | GRR | 30 hr |
| Dec 2, 11:47 AM EST | Wind Advisory | GRR | 22 hr |
| Dec 14, 3:28 PM EST | Wind Advisory | GRR | 14 hr |
| Dec 15, 2:00 PM EST | Winter Weather Advisory | GRR | 69 hr |
| Dec 20, 3:31 PM EST | Winter Storm Watch | GRR | 22 hr |
| Dec 21, 1:42 PM EST | Winter Storm Warning | GRR | 3 days |
| Dec 24, 3:37 AM EST | Winter Weather Advisory | GRR | 39 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 | 5 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 4 |
| Mesoscale Discussion | 10 |
| Special Weather Statement | 8 |
| Flooding | |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 12 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Frost Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 9 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
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.