Alert archive / Michigan / Cass County
Weather alerts in Cass County, Michigan, 2008
171 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cass County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 171
- Warnings
- 40
- Watches
- 35
- Advisories
- 54
- Busiest month
- June32 alerts
- Busiest day
- June 6, 20086 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 2 tornado warnings covering Cass County in 2008 had a tornado report inside them.
Cass County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 10 | 7 | 30% | 5 | 60% | 19 min |
| Flash flood warnings | 3 | 1 | 67% | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: tornado warnings | 27 | 5 | 81% | 8 | 63% | 16 min |
| NWS Northern Indiana: severe thunderstorm warnings | 162 | 81 | 50% | 265 | 67% | 27 min |
| NWS Northern Indiana: flash flood warnings | 26 | 4 | 85% | 16 | 44% | 78 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 |
|---|---|---|---|
| Dec 31, 7:25 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 31, 10:28 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 2, 4:29 AM EST | Lake Effect Snow Warning | IWX | 15 hr |
| Jan 2, 4:29 AM EST | Lake Effect Snow Advisory | IWX | 15 hr |
| Jan 6, 12:48 AM EST | Dense Fog Advisory | IWX | 17 hr |
| Jan 6, 4:02 PM EST | Flood Watch | IWX | 56 hr |
| Jan 7, 6:09 PM EST | Mesoscale Discussion | SPC | 96 min |
| Jan 7, 7:01 PM EST | Tornado Watch | SPC | 5 hr |
| Jan 7, 10:06 PM EST | Flash Flood Warning | IWX | 6 hr |
| Jan 8, 5:53 AM EST | River Flood Warning | IWX | 9 days |
| Jan 8, 11:17 AM EST | River Flood Warning | IWX | 24 hr |
| Jan 9, 11:32 PM EST | River Flood Warning | IWX | 6 days |
| Jan 17, 4:00 PM EST | Winter Storm Watch | IWX | 12 hr |
| Jan 18, 3:57 AM EST | Winter Weather Advisory | IWX | 40 hr |
| Jan 18, 3:00 PM EST | Wind Chill Advisory | IWX | 43 hr |
| Jan 22, 3:27 PM EST | Lake Effect Snow Watch | IWX | 14 hr |
| Jan 23, 5:24 AM EST | Winter Storm Warning | IWX | 35 hr |
| Jan 23, 5:24 AM EST | Winter Weather Advisory | IWX | 35 hr |
| Jan 28, 4:20 PM EST | Wind Advisory | IWX | 42 hr |
| Jan 28, 11:19 PM EST | Winter Storm Warning | IWX | 35 hr |
| Jan 29, 7:15 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 30, 4:58 AM EST | Winter Storm Watch | IWX | 26 hr |
| Jan 31, 4:53 AM EST | Winter Storm Warning | IWX | 36 hr |
| Feb 1, 2:43 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 3, 5:42 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 3, 7:56 PM EST | Winter Weather Advisory | IWX | 8 hr |
| Feb 3, 8:03 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Feb 4, 5:54 AM EST | Flood Watch | IWX | 44 hr |
| Feb 4, 6:53 AM EST | Dense Fog Advisory | IWX | 28 hr |
| Feb 4, 8:18 PM EST | Mesoscale Discussion | SPC | 117 min |
| Feb 4, 8:27 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Feb 4, 8:28 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Feb 5, 5:07 AM EST | Winter Weather Advisory | IWX | 41 hr |
| Feb 5, 11:29 AM EST | River Flood Warning | IWX | 6 days |
| Feb 8, 3:33 PM EST | Lake Effect Snow and Blowing Snow Advisory | IWX | 13 hr |
| Feb 9, 4:29 AM EST | Winter Weather Advisory | IWX | 43 hr |
| Feb 9, 12:00 PM EST | Wind Chill Advisory | IWX | 46 hr |
| Feb 9, 3:03 PM EST | Wind Advisory | IWX | 26 hr |
| Feb 11, 3:12 PM EST | Snow Advisory | IWX | 31 hr |
| Feb 13, 7:09 PM EST | River Flood Warning | IWX | 15 hr |
| Feb 15, 4:53 PM EST | Flood Watch | IWX | 53 hr |
| Feb 16, 3:41 PM EST | Freezing Rain Advisory | IWX | 15 hr |
| Feb 17, 11:50 AM EST | River Flood Warning | IWX | 71 hr |
| Feb 17, 1:33 PM EST | Wind Advisory | IWX | 14 hr |
| Feb 17, 1:52 PM EST | Mesoscale Discussion | SPC | 83 min |
| Feb 18, 4:40 AM EST | Lake Effect Snow and Blowing Snow Advisory | IWX | 32 hr |
| Feb 19, 3:22 PM EST | Lake Effect Snow and Blowing Snow Advisory | IWX | 25 hr |
| Feb 24, 4:31 PM EST | Winter Storm Watch | IWX | 24 hr |
| Feb 25, 4:50 PM EST | Snow and Blowing Snow Advisory | IWX | 23 hr |
| Feb 27, 10:05 AM EST | Lake Effect Snow Advisory | IWX | 8 hr |
| Feb 28, 10:25 PM EST | Snow Advisory | IWX | 14 hr |
| Mar 1, 4:25 AM EST | Flood Watch | IWX | 60 hr |
| Mar 2, 3:30 PM EST | Winter Storm Watch | IWX | 25 hr |
| Mar 3, 4:54 PM EST | Snow Advisory | IWX | 32 hr |
| Mar 19, 3:59 PM EDT | Winter Storm Watch | IWX | 36 hr |
| Mar 21, 4:03 AM EDT | Winter Storm Warning | IWX | 24 hr |
| Mar 21, 4:05 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 27, 3:55 PM EDT | Winter Weather Advisory | IWX | 12 hr |
| Mar 31, 3:16 PM EDT | Wind Advisory | IWX | 23 hr |
| Apr 9, 2:59 PM EDT | Flood Watch | IWX | 40 hr |
| Apr 11, 4:35 AM EDT | Wind Advisory | IWX | 15 hr |
| Apr 11, 11:47 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Apr 11, 12:58 PM EDT | Tornado Watch | SPC | 8 hr |
| Apr 11, 2:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Apr 25, 11:46 PM EDT | Severe Thunderstorm Warning | IWX | 30 min |
| Apr 29, 3:55 AM EDT | Freeze Warning | IWX | 28 hr |
| May 2, 8:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 2, 9:13 PM EDT | Tornado Watch | SPC | 3 hr |
| May 11, 4:21 AM EDT | Wind Advisory | IWX | 17 hr |
| May 13, 8:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 18, 3:31 PM EDT | Frost Advisory | IWX | 16 hr |
| May 27, 4:06 AM EDT | Frost Advisory | IWX | 27 hr |
| Jun 4, 8:02 PM EDT | Tornado Watch | SPC | 8 hr |
| Jun 4, 9:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jun 5, 2:38 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 5, 10:30 AM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 6, 1:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 6, 2:18 PM EDT | Tornado Watch | SPC | 10 hr |
| Jun 6, 4:27 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 4:30 PM EDT | Severe Thunderstorm Warning | IWX | 45 min |
| Jun 6, 5:09 PM EDT | Severe Thunderstorm Warning | IWX | 51 min |
| Jun 6, 7:21 PM EDT | Severe Thunderstorm Warning | IWX | 33 min |
| Jun 8, 12:57 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 8, 1:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 8, 2:24 PM EDT | Severe Thunderstorm Warning | IWX | 66 min |
| Jun 8, 2:46 PM EDT | Tornado Warning | IWX | 44 min |
| Jun 8, 3:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 8, 3:12 PM EDT | Severe Thunderstorm Warning | IWX | 63 min |
| Jun 8, 11:01 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 13, 12:27 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 13, 12:37 PM EDT | Flash Flood Watch | IWX | 4 hr |
| Jun 15, 7:57 AM EDT | Mesoscale Discussion | SPC | 33 min |
| Jun 15, 8:18 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 15, 9:51 AM EDT | Severe Thunderstorm Warning | IWX | 54 min |
| Jun 15, 1:38 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 21, 10:32 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 21, 11:52 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 2:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 22, 11:47 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 22, 8:28 PM EDT | Severe Thunderstorm Warning | IWX | 47 min |
| Jun 26, 4:26 AM EDT | Dense Fog Advisory | IWX | 4 hr |
| Jun 27, 4:36 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 28, 3:21 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 28, 4:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 2, 11:09 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 2, 2:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 2, 4:08 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 2, 8:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 2, 10:25 PM EDT | Flash Flood Warning | IWX | 4 hr |
| Jul 10, 1:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 20, 12:24 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Aug 1, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 1, 6:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Aug 1, 8:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Aug 4, 8:17 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 4, 9:37 PM EDT | Severe Thunderstorm Warning | IWX | 68 min |
| Aug 4, 9:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 4, 10:06 PM EDT | Tornado Warning | IWX | 54 min |
| Aug 4, 10:14 PM EDT | Severe Thunderstorm Warning | IWX | 61 min |
| Sep 12, 3:33 PM EDT | Flood Watch | IWX | 48 hr |
| Sep 13, 6:51 AM EDT | Flash Flood Warning | IWX | 4 hr |
| Sep 13, 8:52 AM EDT | Areal Flood Advisory | IWX | 4 hr |
| Sep 13, 10:45 AM EDT | Areal Flood Advisory | IWX | 4 hr |
| Sep 13, 3:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 13, 5:46 PM EDT | Areal Flood Advisory | IWX | 6 hr |
| Sep 13, 11:56 PM EDT | Areal Flood Warning | IWX | 6 hr |
| Sep 14, 11:40 AM EDT | Areal Flood Warning | IWX | 24 hr |
| Sep 14, 12:21 PM EDT | River Flood Warning | IWX | 5 days |
| Sep 14, 12:21 PM EDT | River Flood Warning | IWX | 46 hr |
| Sep 15, 11:34 AM EDT | Areal Flood Warning | IWX | 6 hr |
| Sep 15, 6:01 PM EDT | Areal Flood Warning | IWX | 24 hr |
| Oct 3, 11:55 AM EDT | Frost Advisory | IWX | 20 hr |
| Oct 4, 3:31 PM EDT | Frost Advisory | IWX | 17 hr |
| Oct 9, 2:20 PM EDT | Frost Advisory | IWX | 18 hr |
| Oct 25, 4:07 AM EDT | Wind Advisory | IWX | 41 hr |
| Nov 17, 4:49 AM EST | Lake Effect Snow Advisory | IWX | 30 hr |
| Nov 17, 10:27 AM EST | Lake Effect Snow Warning | IWX | 26 hr |
| Nov 19, 4:01 AM EST | Lake Effect Snow Watch | IWX | 24 hr |
| Nov 19, 4:24 PM EST | Lake Effect Snow Warning | IWX | 45 hr |
| Nov 20, 3:40 AM EST | Lake Effect Snow Advisory | IWX | 33 hr |
| Nov 29, 3:07 PM EST | Winter Storm Watch | IWX | 14 hr |
| Nov 29, 10:57 PM EST | Winter Weather Advisory | IWX | 17 hr |
| Dec 4, 11:27 PM EST | Lake Effect Snow Advisory | IWX | 11 hr |
| Dec 5, 3:58 PM EST | Winter Weather Advisory | IWX | 13 hr |
| Dec 6, 4:40 AM EST | Winter Storm Warning | IWX | 24 hr |
| Dec 7, 4:30 AM EST | Lake Effect Snow Advisory | IWX | 8 hr |
| Dec 8, 1:02 PM EST | Freezing Rain Advisory | IWX | 6 hr |
| Dec 9, 9:55 PM EST | Winter Weather Advisory | IWX | 6 hr |
| Dec 12, 11:53 AM EST | Lake Effect Snow Advisory | IWX | 4 hr |
| Dec 14, 4:35 AM EST | Wind Advisory | IWX | 29 hr |
| Dec 15, 1:43 AM EST | Winter Weather Advisory | IWX | 8 hr |
| Dec 16, 4:07 AM EST | Winter Weather Advisory | IWX | 27 hr |
| Dec 17, 1:22 AM EST | Winter Storm Watch | IWX | 36 hr |
| Dec 18, 4:51 AM EST | Winter Storm Warning | IWX | 30 hr |
| Dec 19, 12:38 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 19, 1:45 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 19, 7:22 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 20, 11:36 AM EST | Winter Storm Watch | IWX | 4 hr |
| Dec 20, 3:47 PM EST | Winter Storm Warning | IWX | 37 hr |
| Dec 21, 3:39 PM EST | Blizzard Warning | IWX | 14 hr |
| Dec 22, 5:13 AM EST | Lake Effect Snow Advisory | IWX | 5 hr |
| Dec 22, 5:13 AM EST | Winter Storm Watch | IWX | 24 hr |
| Dec 23, 5:09 AM EST | Winter Weather Advisory | IWX | 23 hr |
| Dec 23, 7:22 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 26, 3:13 AM EST | Freezing Rain Advisory | IWX | 8 hr |
| Dec 26, 4:48 AM EST | Flood Watch | IWX | 47 hr |
| Dec 26, 2:28 PM EST | Dense Fog Advisory | IWX | 20 hr |
| Dec 27, 4:19 AM EST | Wind Advisory | IWX | 31 hr |
| Dec 27, 2:54 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 27, 8:32 PM EST | Areal Flood Warning | IWX | 12 hr |
| Dec 29, 10:25 AM EST | Wind Advisory | IWX | 8 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 archive20072009
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.