Alert archive / Michigan / Kalamazoo County
Weather alerts in Kalamazoo County, Michigan, 2012
117 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Kalamazoo County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 117
- Warnings
- 19
- Watches
- 9
- Advisories
- 39
- Busiest month
- March21 alerts
- Busiest day
- September 22, 20126 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 Kalamazoo County in 2012 had a tornado report inside them.
Kalamazoo County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 3 | 0 | 100% | 2 | 0% | |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Rapids, MI: tornado warnings | 6 | 0 | 100% | 0 | ||
| NWS Grand Rapids, MI: severe thunderstorm warnings | 68 | 39 | 43% | 140 | 59% | 21 min |
| NWS Grand Rapids, MI: flash flood warnings | 7 | 4 | 43% | 16 | 75% | 241 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 10, 3:47 PM EST | Winter Storm Watch | GRR | 35 hr |
| Jan 12, 2:55 AM EST | Winter Storm Warning | GRR | 49 hr |
| Jan 16, 4:32 PM EST | Winter Weather Advisory | GRR | 35 hr |
| Jan 16, 9:31 PM EST | Dense Fog Advisory | GRR | 12 hr |
| Jan 17, 10:25 AM EST | River Flood Advisory | GRR | 72 hr |
| Jan 18, 3:09 AM EST | Lake Effect Snow Advisory | GRR | 32 hr |
| Jan 19, 3:11 PM EST | Winter Weather Advisory | GRR | 32 hr |
| Jan 22, 1:25 PM EST | Freezing Rain Advisory | GRR | 14 hr |
| Jan 23, 12:41 AM EST | Special Weather Statement | GRR | 2 hr |
| Jan 23, 1:41 AM EST | Special Weather Statement | GRR | 2 hr |
| Jan 23, 2:33 AM EST | Special Weather Statement | GRR | 87 min |
| Jan 23, 10:34 AM EST | River Flood Advisory | GRR | 17 days |
| Jan 28, 3:23 PM EST | Winter Weather Advisory | GRR | 24 hr |
| Feb 10, 3:43 AM EST | Winter Weather Advisory | GRR | 38 hr |
| Feb 22, 4:58 PM EST | Winter Storm Watch | GRR | 18 hr |
| Feb 23, 7:01 AM EST | Dense Fog Advisory | GRR | 3 hr |
| Feb 23, 10:10 AM EST | Dense Fog Advisory | GRR | 50 min |
| Feb 23, 11:19 AM EST | Winter Storm Warning | GRR | 26 hr |
| Feb 23, 9:34 PM EST | Winter Weather Advisory | GRR | 38 hr |
| Feb 27, 4:41 AM EST | Winter Storm Watch | GRR | 34 hr |
| Feb 29, 10:56 AM EST | River Flood Advisory | GRR | 3 days |
| Feb 29, 6:09 PM EST | Wind Advisory | GRR | 2 hr |
| Mar 2, 3:12 AM EST | High Wind Watch | GRR | 13 hr |
| Mar 2, 3:53 PM EST | High Wind Warning | GRR | 15 hr |
| Mar 2, 4:26 PM EST | Special Weather Statement | GRR | 64 min |
| Mar 2, 5:18 PM EST | Special Weather Statement | GRR | 57 min |
| Mar 7, 4:20 AM EST | Wind Advisory | GRR | 14 hr |
| Mar 12, 4:22 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 12, 5:44 PM EDT | Tornado Warning | GRR | 43 min |
| Mar 15, 5:42 AM EDT | Special Weather Statement | GRR | 63 min |
| Mar 15, 7:01 AM EDT | Special Weather Statement | GRR | 59 min |
| Mar 15, 8:30 PM EDT | Dense Fog Advisory | GRR | 16 hr |
| Mar 22, 3:51 PM EDT | Special Weather Statement | GRR | 69 min |
| Mar 22, 5:04 PM EDT | Special Weather Statement | GRR | 56 min |
| Mar 23, 7:16 PM EDT | Areal Flood Advisory | GRR | 10 hr |
| Mar 24, 10:48 AM EDT | River Flood Warning | GRR | 47 hr |
| Mar 25, 3:59 PM EDT | Frost Advisory | GRR | 12 hr |
| Mar 25, 3:59 PM EDT | Freeze Warning | GRR | 19 hr |
| Mar 26, 11:18 AM EDT | Freeze Warning | GRR | 22 hr |
| Mar 28, 3:17 PM EDT | Frost Advisory | GRR | 17 hr |
| Mar 30, 9:15 AM EDT | Special Weather Statement | GRR | 90 min |
| Mar 30, 10:43 AM EDT | Special Weather Statement | GRR | 77 min |
| Mar 30, 2:12 PM EDT | Special Weather Statement | GRR | 78 min |
| Apr 3, 4:34 AM EDT | Special Weather Statement | GRR | 116 min |
| Apr 3, 6:04 AM EDT | Special Weather Statement | GRR | 86 min |
| Apr 3, 7:47 AM EDT | Special Weather Statement | GRR | 88 min |
| Apr 4, 11:38 AM EDT | Frost Advisory | GRR | 21 hr |
| Apr 5, 10:28 AM EDT | Freeze Warning | GRR | 23 hr |
| Apr 6, 2:26 PM EDT | Freeze Warning | GRR | 19 hr |
| Apr 10, 3:28 PM EDT | Freeze Warning | GRR | 41 hr |
| Apr 12, 11:04 AM EDT | Frost Advisory | GRR | 22 hr |
| Apr 15, 2:51 AM EDT | Special Weather Statement | GRR | 114 min |
| Apr 15, 3:55 AM EDT | Special Weather Statement | GRR | 65 min |
| Apr 15, 6:25 AM EDT | Special Weather Statement | GRR | 50 min |
| Apr 16, 1:10 AM EDT | Wind Advisory | GRR | 19 hr |
| Apr 16, 4:22 PM EDT | Frost Advisory | GRR | 17 hr |
| Apr 17, 12:52 PM EDT | Frost Advisory | GRR | 19 hr |
| Apr 22, 3:59 PM EDT | Freeze Warning | GRR | 16 hr |
| Apr 25, 3:23 PM EDT | Freeze Watch | GRR | 12 hr |
| Apr 26, 3:32 AM EDT | Freeze Warning | GRR | 29 hr |
| Apr 28, 3:13 AM EDT | Freeze Warning | GRR | 30 hr |
| May 3, 10:22 AM EDT | Flash Flood Watch | GRR | 22 hr |
| May 3, 2:35 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 3, 4:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| May 3, 5:49 PM EDT | Severe Thunderstorm Warning | GRR | 56 min |
| May 3, 6:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 3, 8:36 PM EDT | Mesoscale Discussion | SPC | 24 min |
| May 3, 9:50 PM EDT | River Flood Warning | GRR | 13 hr |
| May 3, 9:50 PM EDT | Special Weather Statement | GRR | 55 min |
| May 4, 1:03 AM EDT | Special Weather Statement | GRR | 87 min |
| May 4, 3:17 AM EDT | Special Weather Statement | GRR | 88 min |
| May 8, 4:29 AM EDT | Dense Fog Advisory | GRR | 5 hr |
| May 28, 8:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 2, 6:01 PM EDT | Special Weather Statement | GRR | 59 min |
| Jun 27, 3:20 PM EDT | Heat Advisory | GRR | 30 hr |
| Jun 28, 6:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 3, 10:46 AM EDT | Excessive Heat Warning | GRR | 4 days |
| Jul 14, 6:50 PM EDT | Special Weather Statement | GRR | 55 min |
| Jul 16, 3:07 PM EDT | Heat Advisory | GRR | 29 hr |
| Jul 18, 11:30 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jul 19, 1:08 AM EDT | Special Weather Statement | GRR | 67 min |
| Jul 26, 2:40 AM EDT | Mesoscale Discussion | SPC | 65 min |
| Jul 31, 3:10 AM EDT | Special Weather Statement | GRR | 50 min |
| Aug 4, 4:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Aug 4, 5:35 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 4, 6:57 PM EDT | Severe Thunderstorm Warning | GRR | 38 min |
| Aug 4, 7:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 4, 7:39 PM EDT | Special Weather Statement | GRR | 111 min |
| Aug 14, 4:12 AM EDT | Dense Fog Advisory | GRR | 6 hr |
| Aug 16, 9:38 AM EDT | Special Weather Statement | GRR | 112 min |
| Aug 16, 6:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 26, 11:16 PM EDT | Areal Flood Advisory | GRR | 5 hr |
| Sep 1, 3:57 PM EDT | Special Weather Statement | GRR | 63 min |
| Sep 17, 4:56 PM EDT | Special Weather Statement | GRR | 109 min |
| Sep 22, 2:40 AM EDT | Special Weather Statement | GRR | 65 min |
| Sep 22, 9:06 AM EDT | Special Weather Statement | GRR | 54 min |
| Sep 22, 9:48 AM EDT | Special Weather Statement | GRR | 57 min |
| Sep 22, 10:20 AM EDT | Special Weather Statement | GRR | 55 min |
| Sep 22, 10:31 AM EDT | Severe Thunderstorm Warning | GRR | 44 min |
| Sep 22, 11:47 AM EDT | Special Weather Statement | GRR | 58 min |
| Sep 23, 2:48 PM EDT | Frost Advisory | GRR | 18 hr |
| Oct 6, 2:38 PM EDT | Freeze Warning | GRR | 43 hr |
| Oct 11, 10:45 AM EDT | Wind Advisory | GRR | 7 hr |
| Oct 11, 3:56 PM EDT | Frost Advisory | GRR | 17 hr |
| Oct 14, 5:18 PM EDT | Special Weather Statement | GRR | 57 min |
| Oct 14, 6:16 PM EDT | Special Weather Statement | GRR | 59 min |
| Oct 17, 4:46 PM EDT | Special Weather Statement | GRR | 119 min |
| Oct 22, 10:51 PM EDT | Special Weather Statement | GRR | 54 min |
| Oct 28, 3:45 PM EDT | Wind Advisory | GRR | 48 hr |
| Nov 11, 3:04 AM EST | Wind Advisory | GRR | 22 hr |
| Nov 20, 5:51 PM EST | Dense Fog Advisory | GRR | 17 hr |
| Dec 2, 8:54 PM EST | Dense Fog Advisory | GRR | 15 hr |
| Dec 19, 2:57 PM EST | Winter Weather Advisory | GRR | 52 hr |
| Dec 20, 4:31 PM EST | Special Weather Statement | GRR | 119 min |
| Dec 25, 11:26 AM EST | Winter Weather Advisory | GRR | 40 hr |
| Dec 26, 3:29 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 27, 9:40 PM EST | Winter Weather Advisory | GRR | 13 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 archive20112013
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.