Alert archive / Michigan / Ingham County
Weather alerts in Ingham County, Michigan, 2015
138 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Ingham County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 138
- Warnings
- 15
- Watches
- 14
- Advisories
- 61
- Busiest month
- June21 alerts
- Busiest day
- June 23, 20159 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Ingham County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 1 | 75% | 2 | 50% | 6 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Rapids, MI: tornado warnings | 2 | 0 | 100% | 2 | 0% | |
| NWS Grand Rapids, MI: severe thunderstorm warnings | 62 | 33 | 47% | 90 | 66% | 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 2, 3:18 PM EST | Winter Weather Advisory | GRR | 4 days |
| Jan 4, 3:47 PM EST | Wind Chill Advisory | GRR | 20 hr |
| Jan 7, 3:34 AM EST | Wind Chill Advisory | GRR | 31 hr |
| Jan 7, 3:53 PM EST | Winter Weather Advisory | GRR | 48 hr |
| Jan 9, 10:04 PM EST | Wind Chill Advisory | GRR | 13 hr |
| Jan 21, 4:29 AM EST | Winter Weather Advisory | GRR | 6 hr |
| Jan 28, 3:45 AM EST | Winter Weather Advisory | GRR | 35 hr |
| Jan 31, 3:10 AM EST | Winter Weather Advisory | GRR | 48 hr |
| Jan 31, 3:22 PM EST | Winter Storm Warning | GRR | 36 hr |
| Feb 1, 2:35 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 3, 2:37 PM EST | Winter Weather Advisory | GRR | 19 hr |
| Feb 11, 3:53 PM EST | Wind Chill Advisory | GRR | 21 hr |
| Feb 13, 11:47 AM EST | Winter Weather Advisory | GRR | 32 hr |
| Feb 14, 7:45 PM EST | Wind Chill Warning | GRR | 16 hr |
| Feb 15, 11:36 AM EST | Wind Chill Advisory | GRR | 22 hr |
| Feb 18, 12:28 PM EST | Wind Chill Warning | GRR | 23 hr |
| Feb 18, 12:28 PM EST | Wind Chill Advisory | GRR | 46 hr |
| Feb 22, 3:11 AM EST | Wind Chill Advisory | GRR | 32 hr |
| Feb 23, 3:22 PM EST | Winter Weather Advisory | GRR | 32 hr |
| Feb 24, 9:53 PM EST | Special Weather Statement | GRR | 52 min |
| Mar 2, 3:57 PM EST | Winter Weather Advisory | GRR | 27 hr |
| Mar 10, 11:19 AM EDT | River Flood Advisory | GRR | 8 days |
| Mar 11, 8:44 AM EDT | Dense Fog Advisory | GRR | 2 hr |
| Mar 13, 11:56 AM EDT | River Flood Advisory | GRR | 4 days |
| Mar 13, 11:56 AM EDT | River Flood Advisory | GRR | 4 days |
| Mar 14, 1:00 AM EDT | Dense Fog Advisory | GRR | 6 hr |
| Apr 3, 2:51 AM EDT | Dense Fog Advisory | GRR | 4 hr |
| Apr 9, 4:01 AM EDT | Special Weather Statement | GRR | 89 min |
| Apr 9, 10:40 AM EDT | River Flood Advisory | GRR | 3 days |
| Apr 9, 2:37 PM EDT | Areal Flood Advisory | GRR | 45 hr |
| Apr 9, 3:55 PM EDT | Wind Advisory | GRR | 23 hr |
| Apr 9, 6:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 9, 9:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 9, 9:55 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 10, 12:56 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Apr 10, 2:54 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Apr 10, 5:17 PM EDT | Special Weather Statement | GRR | 118 min |
| May 8, 5:13 PM EDT | Severe Thunderstorm Warning | GRR | 31 min |
| May 11, 6:30 AM EDT | Dense Fog Advisory | GRR | 4 hr |
| May 11, 11:21 AM EDT | River Flood Advisory | GRR | 36 hr |
| May 11, 12:48 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 11, 1:14 PM EDT | Tornado Watch | SPC | 7 hr |
| May 13, 3:21 PM EDT | Frost Advisory | GRR | 17 hr |
| May 19, 3:39 PM EDT | Frost Advisory | GRR | 16 hr |
| May 22, 3:41 PM EDT | Frost Advisory | GRR | 16 hr |
| May 25, 3:59 PM EDT | Special Weather Statement | GRR | 61 min |
| May 25, 5:25 PM EDT | Special Weather Statement | GRR | 35 min |
| May 26, 3:01 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 26, 4:41 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 4:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 12:05 PM EDT | Special Weather Statement | GRR | 115 min |
| May 27, 12:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| May 30, 7:04 PM EDT | Areal Flood Advisory | GRR | 24 hr |
| Jun 8, 5:48 PM EDT | Special Weather Statement | GRR | 42 min |
| Jun 14, 9:59 AM EDT | River Flood Advisory | GRR | 4 days |
| Jun 15, 6:24 AM EDT | Dense Fog Advisory | GRR | 3 hr |
| Jun 15, 10:43 AM EDT | Flash Flood Watch | GRR | 12 hr |
| Jun 22, 12:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 1:23 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 22, 3:04 PM EDT | Severe Thunderstorm Warning | GRR | 41 min |
| Jun 22, 8:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 22, 9:17 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 22, 11:00 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jun 22, 11:31 PM EDT | Severe Thunderstorm Warning | GRR | 44 min |
| Jun 22, 11:58 PM EDT | Areal Flood Warning | GRR | 12 hr |
| Jun 23, 12:03 AM EDT | Areal Flood Advisory | GRR | 12 hr |
| Jun 23, 1:35 AM EDT | River Flood Advisory | GRR | 39 hr |
| Jun 23, 3:49 AM EDT | River Flood Advisory | GRR | 53 hr |
| Jun 23, 3:49 AM EDT | River Flood Advisory | GRR | 3 days |
| Jun 24, 12:43 AM EDT | River Flood Warning | GRR | 11 hr |
| Jun 24, 11:39 AM EDT | River Flood Warning | GRR | 5 hr |
| Jun 24, 4:23 PM EDT | River Flood Advisory | GRR | 6 days |
| Jun 24, 6:38 PM EDT | River Flood Advisory | GRR | 41 hr |
| Jun 27, 4:09 PM EDT | Areal Flood Advisory | GRR | 12 hr |
| Jun 30, 11:05 PM EDT | River Flood Advisory | GRR | 70 hr |
| Jul 7, 11:54 PM EDT | River Flood Advisory | GRR | 44 hr |
| Jul 14, 1:55 AM EDT | Areal Flood Advisory | GRR | 12 hr |
| Jul 17, 3:20 PM EDT | Heat Advisory | GRR | 22 hr |
| Jul 18, 10:40 AM EDT | Special Weather Statement | GRR | 95 min |
| Jul 18, 4:59 PM EDT | Tornado Watch | SPC | 5 hr |
| Jul 18, 7:31 PM EDT | Special Weather Statement | GRR | 119 min |
| Jul 25, 3:21 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Aug 2, 2:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Aug 2, 3:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 3:59 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 2, 6:08 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 2, 6:27 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 2, 7:15 PM EDT | Special Weather Statement | GRR | 2 hr |
| Aug 2, 9:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Aug 10, 12:11 PM EDT | Areal Flood Advisory | GRR | 12 hr |
| Aug 11, 5:35 AM EDT | River Flood Advisory | GRR | 26 hr |
| Aug 17, 3:00 PM EDT | Special Weather Statement | GRR | 2 hr |
| Aug 19, 2:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 23, 1:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Aug 23, 1:59 PM EDT | Special Weather Statement | GRR | 2 hr |
| Aug 23, 4:08 PM EDT | Special Weather Statement | GRR | 67 min |
| Aug 31, 1:16 AM EDT | Dense Fog Advisory | GRR | 9 hr |
| Sep 3, 11:34 AM EDT | Special Weather Statement | GRR | 56 min |
| Sep 3, 3:54 PM EDT | Severe Thunderstorm Warning | GRR | 51 min |
| Sep 3, 4:58 PM EDT | Areal Flood Advisory | GRR | 2 hr |
| Sep 3, 5:04 PM EDT | Special Weather Statement | GRR | 41 min |
| Sep 4, 12:48 AM EDT | Dense Fog Advisory | GRR | 9 hr |
| Sep 5, 2:57 AM EDT | Dense Fog Advisory | GRR | 9 hr |
| Sep 7, 5:40 PM EDT | Special Weather Statement | GRR | 65 min |
| Sep 7, 6:15 PM EDT | Areal Flood Advisory | GRR | 6 hr |
| Sep 7, 8:40 PM EDT | River Flood Advisory | GRR | 65 hr |
| Sep 8, 1:07 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 8, 3:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Oct 15, 3:42 PM EDT | Freeze Watch | GRR | 23 hr |
| Oct 16, 10:44 AM EDT | Freeze Watch | GRR | 28 hr |
| Oct 16, 2:59 PM EDT | Freeze Warning | GRR | 19 hr |
| Oct 17, 2:30 PM EDT | Freeze Warning | GRR | 19 hr |
| Oct 24, 2:36 PM EDT | Special Weather Statement | GRR | 84 min |
| Oct 24, 3:09 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 28, 9:33 PM EDT | Special Weather Statement | GRR | 117 min |
| Nov 6, 5:02 AM EST | Special Weather Statement | GRR | 118 min |
| Nov 11, 4:49 AM EST | High Wind Watch | GRR | 11 hr |
| Nov 11, 3:26 PM EST | High Wind Warning | GRR | 24 hr |
| Nov 11, 3:26 PM EST | Wind Advisory | GRR | 36 hr |
| Nov 11, 11:28 PM EST | Special Weather Statement | GRR | 107 min |
| Nov 18, 4:05 PM EST | Special Weather Statement | GRR | 3 hr |
| Nov 20, 3:52 AM EST | Winter Storm Watch | GRR | 12 hr |
| Nov 20, 3:34 PM EST | Winter Weather Advisory | GRR | 36 hr |
| Nov 21, 9:11 AM EST | Winter Storm Warning | GRR | 19 hr |
| Nov 21, 9:36 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Nov 26, 1:28 PM EST | River Flood Advisory | GRR | 5 days |
| Dec 5, 12:09 AM EST | Freezing Fog Advisory | GRR | 12 hr |
| Dec 6, 9:53 PM EST | Dense Fog Advisory | GRR | 12 hr |
| Dec 7, 6:34 PM EST | Dense Fog Advisory | GRR | 9 hr |
| Dec 14, 12:24 PM EST | Special Weather Statement | GRR | 51 min |
| Dec 14, 1:02 PM EST | Special Weather Statement | GRR | 58 min |
| Dec 23, 3:53 AM EST | Wind Advisory | GRR | 30 hr |
| Dec 23, 4:24 PM EST | Special Weather Statement | GRR | 2 hr |
| Dec 26, 12:10 PM EST | River Flood Advisory | GRR | 36 hr |
| Dec 27, 3:42 AM EST | Winter Storm Watch | GRR | 12 hr |
| Dec 27, 3:53 PM EST | Winter Storm Warning | GRR | 35 hr |
| Dec 28, 12:04 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 30, 2:11 PM EST | River Flood Advisory | GRR | 29 hr |
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 archive20142016
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.