Alert archive / Michigan / Kent County
Weather alerts in Kent County, Michigan, 2019
119 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Kent County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 119
- Warnings
- 19
- Watches
- 14
- Advisories
- 51
- Busiest month
- January16 alerts
- Busiest day
- July 20, 20196 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 Kent County in 2019 had a tornado report inside them.
Kent County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 7 | 6 | 14% | 33 | 88% | 26 min |
| 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 Grand Rapids, MI: tornado warnings | 5 | 0 | 100% | 1 | 0% | |
| NWS Grand Rapids, MI: severe thunderstorm warnings | 72 | 37 | 49% | 146 | 68% | 23 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 2, 3:24 AM EST | Winter Weather Advisory | GRR | 18 hr |
| Jan 5, 3:38 AM EST | Dense Fog Advisory | GRR | 6 hr |
| Jan 6, 3:25 AM EST | Winter Weather Advisory | GRR | 37 hr |
| Jan 8, 3:33 AM EST | Winter Weather Advisory | GRR | 36 hr |
| Jan 14, 3:15 PM EST | Winter Weather Advisory | GRR | 12 hr |
| Jan 15, 5:52 AM EST | Winter Weather Advisory | GRR | 28 hr |
| Jan 18, 3:21 AM EST | Winter Weather Advisory | GRR | 36 hr |
| Jan 19, 3:27 PM EST | Wind Chill Advisory | GRR | 19 hr |
| Jan 20, 10:45 AM EST | Wind Chill Advisory | GRR | 25 hr |
| Jan 21, 3:25 PM EST | Winter Weather Advisory | GRR | 47 hr |
| Jan 23, 3:24 PM EST | Winter Weather Advisory | GRR | 59 hr |
| Jan 26, 4:10 AM EST | Winter Weather Advisory | GRR | 21 hr |
| Jan 26, 3:18 PM EST | Winter Storm Watch | GRR | 12 hr |
| Jan 27, 3:21 AM EST | Winter Storm Warning | GRR | 5 days |
| Jan 28, 3:42 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 28, 8:18 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 2, 2:44 PM EST | Dense Fog Advisory | GRR | 15 hr |
| Feb 3, 5:49 PM EST | Dense Fog Advisory | GRR | 16 hr |
| Feb 4, 3:43 PM EST | Winter Weather Advisory | GRR | 4 days |
| Feb 5, 9:54 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 8, 10:38 AM EST | River Flood Warning | GRR | 5 days |
| Feb 10, 3:30 PM EST | Winter Weather Advisory | GRR | 70 hr |
| Feb 12, 2:40 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 17, 9:31 AM EST | Winter Weather Advisory | GRR | 17 hr |
| Feb 19, 2:36 PM EST | Winter Weather Advisory | GRR | 31 hr |
| Feb 21, 3:25 PM EST | Winter Storm Watch | GRR | 48 hr |
| Feb 23, 3:38 PM EST | High Wind Warning | GRR | 36 hr |
| Feb 24, 2:05 AM EST | Special Weather Statement | GRR | 115 min |
| Feb 26, 3:14 AM EST | Winter Weather Advisory | GRR | 34 hr |
| Mar 4, 3:04 AM EST | Winter Weather Advisory | GRR | 3 days |
| Mar 9, 8:10 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 10, 3:14 AM EDT | Wind Advisory | GRR | 17 hr |
| Mar 13, 12:21 PM EDT | River Flood Watch | GRR | 7 days |
| Mar 13, 12:21 PM EDT | River Flood Watch | GRR | 4 days |
| Mar 14, 9:48 AM EDT | Wind Advisory | GRR | 13 hr |
| Mar 14, 2:51 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Mar 14, 4:44 PM EDT | Special Weather Statement | GRR | 46 min |
| Mar 14, 5:17 PM EDT | Severe Thunderstorm Warning | GRR | 28 min |
| Mar 14, 11:01 PM EDT | River Flood Warning | GRR | 3 days |
| Mar 14, 11:01 PM EDT | River Flood Warning | GRR | 7 days |
| Apr 10, 3:45 AM EDT | Winter Weather Advisory | GRR | 28 hr |
| Apr 13, 3:22 PM EDT | Winter Weather Advisory | GRR | 36 hr |
| Apr 22, 9:58 AM EDT | Red Flag Warning | GRR | 10 hr |
| Apr 23, 3:49 PM EDT | Frost Advisory | GRR | 16 hr |
| Apr 26, 3:39 AM EDT | Wind Advisory | GRR | 17 hr |
| Apr 26, 3:20 PM EDT | Winter Weather Advisory | GRR | 38 hr |
| May 10, 3:33 AM EDT | Frost Advisory | GRR | 28 hr |
| May 19, 4:26 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 19, 4:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 19, 7:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 25, 2:50 AM EDT | Areal Flood Advisory | GRR | 9 hr |
| Jun 1, 6:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 1, 6:46 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 1, 7:39 PM EDT | Severe Thunderstorm Warning | GRR | 66 min |
| Jun 20, 9:54 PM EDT | River Flood Advisory | GRR | 36 hr |
| Jun 20, 9:54 PM EDT | River Flood Advisory | GRR | 36 hr |
| Jun 20, 9:54 PM EDT | River Flood Advisory | GRR | 36 hr |
| Jun 25, 2:52 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 2, 3:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 2, 5:56 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 2, 6:27 PM EDT | Severe Thunderstorm Warning | GRR | 63 min |
| Jul 16, 3:01 PM EDT | Areal Flood Advisory | GRR | 3 hr |
| Jul 18, 3:27 AM EDT | Excessive Heat Warning | GRR | 65 hr |
| Jul 20, 1:08 AM EDT | Special Weather Statement | GRR | 82 min |
| Jul 20, 1:24 AM EDT | Severe Thunderstorm Warning | GRR | 51 min |
| Jul 20, 1:50 AM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 20, 11:08 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 2:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 20, 4:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 12:36 PM EDT | Special Weather Statement | GRR | 114 min |
| Jul 29, 1:30 PM EDT | Special Weather Statement | GRR | 75 min |
| Aug 5, 9:30 PM EDT | Special Weather Statement | GRR | 90 min |
| Aug 5, 11:52 PM EDT | Special Weather Statement | GRR | 83 min |
| Aug 7, 11:49 PM EDT | Special Weather Statement | GRR | 56 min |
| Aug 16, 3:23 AM EDT | Dense Fog Advisory | GRR | 7 hr |
| Aug 18, 7:06 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 18, 8:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 18, 5:12 PM EDT | Special Weather Statement | GRR | 108 min |
| Aug 20, 5:18 AM EDT | Special Weather Statement | GRR | 2 hr |
| Aug 20, 1:43 PM EDT | Special Weather Statement | GRR | 3 hr |
| Aug 29, 6:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 29, 7:16 PM EDT | Severe Thunderstorm Warning | GRR | 44 min |
| Aug 29, 8:06 PM EDT | Special Weather Statement | GRR | 54 min |
| Sep 10, 5:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 10, 6:28 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 11, 1:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Sep 11, 2:31 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 11, 4:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Sep 11, 6:59 PM EDT | Severe Thunderstorm Warning | GRR | 61 min |
| Sep 11, 7:30 PM EDT | Severe Thunderstorm Warning | GRR | 45 min |
| Sep 11, 7:58 PM EDT | Tornado Warning | GRR | 32 min |
| Sep 13, 6:28 AM EDT | Areal Flood Advisory | GRR | 4 hr |
| Sep 22, 11:00 PM EDT | Areal Flood Advisory | GRR | 4 hr |
| Sep 27, 9:19 PM EDT | Areal Flood Advisory | GRR | 6 hr |
| Sep 29, 9:49 AM EDT | Areal Flood Advisory | GRR | 9 hr |
| Oct 1, 3:56 AM EDT | Flood Watch | GRR | 31 hr |
| Oct 1, 11:18 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 1, 10:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Oct 1, 11:52 PM EDT | Areal Flood Advisory | GRR | 15 hr |
| Oct 3, 11:40 AM EDT | River Flood Warning | GRR | 47 hr |
| Oct 6, 10:38 AM EDT | River Flood Warning | GRR | 63 hr |
| Oct 7, 3:19 PM EDT | Frost Advisory | GRR | 17 hr |
| Oct 11, 11:25 AM EDT | Areal Flood Advisory | GRR | 6 hr |
| Oct 14, 3:20 AM EDT | Frost Advisory | GRR | 29 hr |
| Oct 17, 3:25 AM EDT | Frost Advisory | GRR | 29 hr |
| Oct 17, 4:00 PM EDT | Freeze Warning | GRR | 16 hr |
| Oct 27, 3:16 AM EDT | Special Weather Statement | GRR | 119 min |
| Oct 30, 3:52 PM EDT | Winter Weather Advisory | GRR | 35 hr |
| Oct 31, 12:56 PM EDT | River Flood Watch | GRR | 5 days |
| Nov 2, 11:48 AM EDT | Special Weather Statement | GRR | 4 hr |
| Nov 10, 12:08 PM EST | Winter Weather Advisory | GRR | 53 hr |
| Nov 25, 3:23 PM EST | High Wind Watch | GRR | 24 hr |
| Nov 26, 3:04 PM EST | Wind Advisory | GRR | 30 hr |
| Nov 29, 3:52 PM EST | Winter Weather Advisory | GRR | 49 hr |
| Dec 14, 6:01 PM EST | Winter Weather Advisory | GRR | 6 hr |
| Dec 17, 3:55 AM EST | Winter Weather Advisory | GRR | 35 hr |
| Dec 29, 3:53 PM EST | Areal Flood Advisory | GRR | 42 hr |
| Dec 29, 4:06 PM EST | Winter Weather Advisory | GRR | 44 hr |
| Dec 30, 12:25 PM EST | River Flood Warning | GRR | 7 days |
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 | 7 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 7 |
| Mesoscale Discussion | 21 |
| Special Weather Statement | 14 |
| Flooding | |
| River Flood Warning | 6 |
| Flood Watch | 1 |
| River Flood Watch | 3 |
| Areal Flood Advisory | 9 |
| River Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 24 |
| Heat | |
| Excessive Heat Warning | 1 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 5 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
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.