Alert archive / Michigan / Mecosta County
Weather alerts in Mecosta County, Michigan, 2018
70 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Mecosta County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 70
- Warnings
- 13
- Watches
- 8
- Advisories
- 24
- Busiest month
- August12 alerts
- Busiest day
- July 2, 20184 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 Mecosta County in 2018 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.
Mecosta County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 1 | 0% | |
| Severe thunderstorm warnings | 5 | 4 | 20% | 7 | 57% | 32 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Rapids, MI: tornado warnings | 3 | 1 | 67% | 6 | 17% | 12 min |
| NWS Grand Rapids, MI: severe thunderstorm warnings | 58 | 35 | 40% | 112 | 71% | 22 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 3, 3:20 PM EST | Wind Chill Advisory | GRR | 15 hr |
| Jan 4, 6:10 AM EST | Wind Chill Advisory | GRR | 29 hr |
| Jan 7, 12:20 PM EST | Winter Weather Advisory | GRR | 21 hr |
| Jan 10, 4:57 PM EST | Dense Fog Advisory | GRR | 11 hr |
| Jan 15, 7:59 PM EST | Areal Flood Advisory | GRR | 4 days |
| Feb 2, 3:03 PM EST | Winter Weather Advisory | GRR | 52 hr |
| Feb 10, 2:45 PM EST | Winter Weather Advisory | GRR | 24 hr |
| Feb 18, 3:02 PM EST | Flood Watch | GRR | 45 hr |
| Feb 18, 10:21 PM EST | River Flood Advisory | GRR | 5 days |
| Feb 20, 6:55 AM EST | Areal Flood Warning | GRR | 54 hr |
| Feb 25, 1:34 AM EST | Wind Advisory | GRR | 12 hr |
| Mar 6, 8:26 AM EST | Special Weather Statement | GRR | 3 hr |
| Mar 30, 2:53 PM EDT | Wind Advisory | GRR | 28 hr |
| Apr 2, 3:39 PM EDT | Winter Weather Advisory | GRR | 43 hr |
| Apr 5, 2:45 AM EDT | Winter Weather Advisory | GRR | 31 hr |
| Apr 12, 3:24 AM EDT | Winter Storm Watch | GRR | 36 hr |
| Apr 13, 11:44 AM EDT | Special Weather Statement | GRR | 91 min |
| Apr 13, 12:51 PM EDT | Special Weather Statement | GRR | 39 min |
| Apr 13, 3:31 PM EDT | Winter Storm Warning | GRR | 54 hr |
| Apr 15, 12:14 AM EDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 30, 12:28 PM EDT | Fire Weather Watch | GRR | 8 hr |
| Apr 30, 3:00 PM EDT | Red Flag Warning | GRR | 29 hr |
| May 3, 4:08 PM EDT | Wind Advisory | GRR | 24 hr |
| May 9, 8:31 PM EDT | Severe Thunderstorm Warning | GRR | 59 min |
| May 10, 3:39 AM EDT | Freeze Warning | GRR | 30 hr |
| May 26, 7:31 PM EDT | Severe Thunderstorm Warning | GRR | 59 min |
| May 27, 3:12 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 27, 3:21 PM EDT | Special Weather Statement | GRR | 84 min |
| May 30, 8:03 PM EDT | Special Weather Statement | GRR | 27 min |
| Jun 16, 2:31 PM EDT | Heat Advisory | GRR | 29 hr |
| Jun 29, 2:23 AM EDT | Excessive Heat Warning | GRR | 66 hr |
| Jul 1, 6:05 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 6:35 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 1, 8:31 PM EDT | Special Weather Statement | GRR | 44 min |
| Jul 1, 8:36 PM EDT | Severe Thunderstorm Warning | GRR | 39 min |
| Jul 1, 9:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 1, 9:05 PM EDT | Severe Thunderstorm Warning | GRR | 40 min |
| Jul 4, 3:17 AM EDT | Heat Advisory | GRR | 17 hr |
| Jul 16, 12:36 PM EDT | Special Weather Statement | GRR | 54 min |
| Aug 1, 4:23 PM EDT | Special Weather Statement | GRR | 67 min |
| Aug 1, 7:14 PM EDT | Special Weather Statement | GRR | 61 min |
| Aug 2, 1:42 PM EDT | Special Weather Statement | GRR | 63 min |
| Aug 11, 5:46 PM EDT | Special Weather Statement | GRR | 59 min |
| Aug 19, 7:09 AM EDT | Special Weather Statement | GRR | 111 min |
| Aug 26, 10:21 PM EDT | Special Weather Statement | GRR | 54 min |
| Aug 26, 10:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 28, 10:59 AM EDT | Flood Watch | GRR | 16 hr |
| Aug 28, 4:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Aug 28, 6:23 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 28, 7:14 PM EDT | Severe Thunderstorm Warning | GRR | 61 min |
| Aug 28, 8:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Sep 1, 12:43 PM EDT | Flood Watch | GRR | 18 hr |
| Sep 1, 7:53 PM EDT | Tornado Warning | GRR | 37 min |
| Sep 2, 8:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Sep 14, 3:40 AM EDT | Dense Fog Advisory | GRR | 6 hr |
| Sep 21, 3:33 AM EDT | Wind Advisory | GRR | 14 hr |
| Oct 3, 10:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Oct 4, 12:46 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Oct 12, 3:42 PM EDT | Freeze Warning | GRR | 17 hr |
| Oct 17, 3:52 AM EDT | Freeze Warning | GRR | 30 hr |
| Nov 8, 1:55 AM EST | Winter Weather Advisory | GRR | 56 hr |
| Nov 15, 3:11 PM EST | Special Weather Statement | GRR | 3 hr |
| Nov 15, 5:27 PM EST | Winter Weather Advisory | GRR | 17 hr |
| Nov 24, 3:45 AM EST | Winter Storm Watch | GRR | 11 hr |
| Nov 24, 2:41 PM EST | Winter Weather Advisory | GRR | 46 hr |
| Dec 13, 3:44 PM EST | Winter Weather Advisory | GRR | 16 hr |
| Dec 14, 6:15 PM EST | Dense Fog Advisory | GRR | 15 hr |
| Dec 16, 5:13 AM EST | Freezing Fog Advisory | GRR | 8 hr |
| Dec 30, 3:13 PM EST | Winter Weather Advisory | GRR | 36 hr |
| Dec 31, 12:50 PM EST | Mesoscale Discussion | SPC | 6 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 | 2 |
| Mesoscale Discussion | 11 |
| Special Weather Statement | 14 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flood Watch | 3 |
| Areal Flood Advisory | 1 |
| River Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 10 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 3 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.