Alert archive / Michigan / Gratiot County
Weather alerts in Gratiot County, Michigan, 2026
97 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Gratiot County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 97
- Warnings
- 26
- Watches
- 18
- Advisories
- 24
- Busiest month
- April26 alerts
- Busiest day
- April 15, 20267 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 3 tornado warnings covering Gratiot County in 2026 had a tornado report inside them.
Gratiot County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 13 | 7 | 46% | 11 | 100% | 22 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Rapids, MI: tornado warnings | 23 | 3 | 87% | 8 | 75% | 7 min |
| NWS Grand Rapids, MI: severe thunderstorm warnings | 131 | 61 | 53% | 233 | 86% | 31 min |
| NWS Grand Rapids, MI: flash flood warnings | 3 | 1 | 67% | 8 | 25% | 28 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
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 5, 12:31 PM EST | Winter Weather Advisory | GRR | 24 hr |
| Jan 9, 12:13 AM EST | Special Weather Statement | GRR | 3 hr |
| Jan 9, 2:08 AM EST | Wind Advisory | GRR | 14 hr |
| Jan 18, 3:51 AM EST | Winter Weather Advisory | GRR | 51 hr |
| Jan 20, 2:26 PM EST | Winter Weather Advisory | GRR | 21 hr |
| Jan 21, 3:30 PM EST | Extreme Cold Watch | GRR | 11 hr |
| Jan 22, 2:43 AM EST | Cold Weather Advisory | GRR | 56 hr |
| Jan 22, 3:36 PM EST | Extreme Cold Warning | GRR | 43 hr |
| Jan 29, 2:42 PM EST | Cold Weather Advisory | GRR | 19 hr |
| Feb 2, 9:58 AM EST | Winter Weather Advisory | GRR | 9 hr |
| Feb 5, 10:34 AM EST | Winter Weather Advisory | GRR | 24 hr |
| Feb 18, 6:55 PM EST | Dense Fog Advisory | GRR | 12 hr |
| Mar 6, 8:29 AM EST | Dense Fog Advisory | GRR | 5 hr |
| Mar 6, 1:50 PM EST | Special Weather Statement | GRR | 55 min |
| Mar 10, 1:59 PM EDT | Flood Watch | GRR | 21 hr |
| Mar 10, 6:40 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 10, 8:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Mar 10, 9:41 PM EDT | Severe Thunderstorm Warning | GRR | 64 min |
| Mar 10, 9:58 PM EDT | Flash Flood Warning | GRR | 3 hr |
| Mar 10, 10:38 PM EDT | Severe Thunderstorm Warning | GRR | 56 min |
| Mar 10, 10:45 PM EDT | Severe Thunderstorm Warning | GRR | 17 min |
| Mar 12, 2:45 AM EDT | High Wind Watch | GRR | 10 hr |
| Mar 12, 12:07 PM EDT | Winter Weather Advisory | GRR | 35 hr |
| Mar 12, 12:54 PM EDT | High Wind Warning | GRR | 34 hr |
| Mar 14, 1:22 PM EDT | Wind Advisory | GRR | 57 hr |
| Mar 30, 11:49 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 31, 12:43 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 4, 10:28 PM EDT | River Flood Warning | GRR | 52 hr |
| Apr 12, 1:40 PM EDT | Flood Watch | GRR | 4 days |
| Apr 13, 8:25 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 13, 9:09 PM EDT | Severe Thunderstorm Warning | GRR | 36 min |
| Apr 13, 11:12 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 14, 2:50 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 14, 4:47 AM EDT | Special Weather Statement | GRR | 43 min |
| Apr 14, 5:39 AM EDT | Special Weather Statement | GRR | 36 min |
| Apr 14, 8:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Apr 14, 8:54 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 14, 9:55 PM EDT | Severe Thunderstorm Warning | GRR | 65 min |
| Apr 14, 11:01 PM EDT | Tornado Warning | GRR | 44 min |
| Apr 14, 11:17 PM EDT | Tornado Warning | GRR | 28 min |
| Apr 14, 11:18 PM EDT | Areal Flood Warning | GRR | 12 hr |
| Apr 15, 12:19 PM EDT | River Flood Warning | GRR | 5 days |
| Apr 16, 7:57 PM EDT | Special Weather Statement | GRR | 93 min |
| Apr 17, 2:12 AM EDT | Dense Fog Advisory | GRR | 9 hr |
| Apr 18, 2:10 PM EDT | Frost Advisory | GRR | 17 hr |
| Apr 18, 2:10 PM EDT | Freeze Watch | GRR | 12 hr |
| Apr 19, 1:45 AM EDT | Freeze Warning | GRR | 32 hr |
| Apr 24, 2:22 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 24, 3:07 PM EDT | Special Weather Statement | GRR | 23 min |
| Apr 27, 1:44 PM EDT | Wind Advisory | GRR | 6 hr |
| Apr 29, 1:34 PM EDT | Frost Advisory | GRR | 18 hr |
| Apr 30, 12:45 PM EDT | Frost Advisory | GRR | 19 hr |
| Apr 30, 12:45 PM EDT | Freeze Watch | GRR | 23 hr |
| May 1, 12:01 PM EDT | Freeze Warning | GRR | 21 hr |
| May 2, 1:07 PM EDT | Frost Advisory | GRR | 18 hr |
| May 4, 2:46 PM EDT | Red Flag Warning | GRR | 4 hr |
| May 6, 1:57 PM EDT | Frost Advisory | GRR | 18 hr |
| May 10, 1:10 PM EDT | Frost Advisory | GRR | 19 hr |
| May 11, 1:34 PM EDT | Frost Advisory | GRR | 18 hr |
| May 16, 5:00 AM EDT | Special Weather Statement | GRR | 60 min |
| May 16, 5:23 AM EDT | Severe Thunderstorm Warning | GRR | 30 min |
| May 17, 3:32 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 18, 12:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 18, 12:59 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 18, 3:07 PM EDT | Severe Thunderstorm Warning | GRR | 53 min |
| May 18, 3:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| May 24, 9:53 PM EDT | Dense Fog Advisory | GRR | 12 hr |
| Jun 6, 1:21 AM EDT | Special Weather Statement | GRR | 114 min |
| Jun 10, 4:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 5:41 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 10, 6:55 PM EDT | Severe Thunderstorm Warning | GRR | 37 min |
| Jun 10, 7:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 10, 7:39 PM EDT | Severe Thunderstorm Warning | GRR | 66 min |
| Jun 11, 8:08 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 14, 1:05 AM EDT | Special Weather Statement | GRR | 85 min |
| Jun 16, 1:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 16, 4:07 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 16, 4:30 PM EDT | Severe Thunderstorm Warning | GRR | 31 min |
| Jun 17, 3:05 AM EDT | Flood Watch | GRR | 19 hr |
| Jun 28, 2:31 AM EDT | Extreme Heat Watch | GRR | 11 hr |
| Jun 28, 1:26 PM EDT | Extreme Heat Warning | GRR | 4 days |
| Jul 2, 11:36 AM EDT | Heat Advisory | GRR | 31 hr |
| Jul 13, 1:53 AM EDT | Extreme Heat Watch | GRR | 9 hr |
| Jul 13, 10:35 AM EDT | Heat Advisory | GRR | 57 hr |
| Jul 15, 6:58 PM EDT | Severe Thunderstorm Warning | GRR | 47 min |
| Jul 15, 7:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 5:39 PM EDT | Special Weather Statement | GRR | 2 hr |
| Jul 27, 12:42 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 27, 9:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Sep 2, 5:18 AM EDT | Special Weather Statement | GRR | 87 min |
| Sep 2, 6:37 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Sep 3, 8:52 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Sep 3, 1:31 PM EDT | Severe Thunderstorm Warning | GRR | 44 min |
| Sep 3, 1:44 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 3, 1:47 PM EDT | Tornado Warning | GRR | 12 min |
| Sep 3, 1:59 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Sep 3, 2:14 PM EDT | Severe Thunderstorm Warning | GRR | 46 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
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.