Alert archive / Indiana / Cass County
Weather alerts in Cass County, Indiana, 2023
84 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 84
- Warnings
- 19
- Watches
- 14
- Advisories
- 24
- Busiest month
- July19 alerts
- Busiest day
- July 29, 20237 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 4 tornado reports fell inside a warning.
Cass County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 4 | 0% | |||
| Severe thunderstorm warnings | 10 | 7 | 30% | 6 | 100% | 13 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: tornado warnings | 22 | 6 | 73% | 32 | 59% | 11 min |
| NWS Northern Indiana: severe thunderstorm warnings | 125 | 68 | 46% | 348 | 58% | 24 min |
| NWS Northern Indiana: flash flood warnings | 4 | 2 | 50% | 9 | 33% | 47 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 1, 10:16 PM EST | Dense Fog Advisory | IWX | 14 hr |
| Jan 2, 4:41 PM EST | Dense Fog Advisory | IWX | 12 hr |
| Jan 11, 10:10 PM EST | Dense Fog Advisory | IWX | 10 hr |
| Jan 23, 3:48 AM EST | Winter Storm Watch | IWX | 24 hr |
| Jan 24, 3:44 AM EST | Winter Storm Warning | IWX | 40 hr |
| Jan 25, 10:14 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 7, 2:30 PM EST | High Wind Watch | IWX | 24 hr |
| Feb 8, 2:26 PM EST | High Wind Warning | IWX | 29 hr |
| Feb 14, 3:20 AM EST | Wind Advisory | IWX | 36 hr |
| Feb 22, 3:42 PM EST | Areal Flood Advisory | IWX | 5 hr |
| Feb 23, 3:05 AM EST | Dense Fog Advisory | IWX | 8 hr |
| Feb 23, 6:45 AM EST | River Flood Warning | IWX | 48 hr |
| Feb 27, 11:06 AM EST | Tornado Watch | SPC | 5 hr |
| Mar 2, 3:56 AM EST | Flood Watch | IWX | 41 hr |
| Mar 2, 9:48 PM EST | Winter Weather Advisory | IWX | 23 hr |
| Mar 3, 10:35 AM EST | River Flood Warning | IWX | 3 days |
| Mar 5, 7:59 AM EST | Dense Fog Advisory | IWX | 2 hr |
| Mar 23, 10:07 AM EDT | River Flood Warning | IWX | 26 hr |
| Mar 26, 2:41 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 31, 4:53 AM EDT | Wind Advisory | IWX | 36 hr |
| Mar 31, 7:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Mar 31, 7:59 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 31, 10:06 PM EDT | Severe Thunderstorm Warning | IWX | 39 min |
| Mar 31, 10:23 PM EDT | Severe Thunderstorm Warning | IWX | 52 min |
| Mar 31, 10:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Mar 31, 10:45 PM EDT | Severe Thunderstorm Warning | IWX | 45 min |
| Apr 4, 2:02 PM EDT | Wind Advisory | IWX | 28 hr |
| Apr 5, 7:09 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 8:41 AM EDT | Tornado Watch | SPC | 7 hr |
| Apr 5, 10:57 AM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 5, 11:29 AM EDT | Special Weather Statement | IWX | 46 min |
| Apr 11, 3:34 AM EDT | Fire Weather Watch | IWX | 24 hr |
| Apr 12, 3:52 AM EDT | Red Flag Warning | IWX | 16 hr |
| Apr 18, 1:35 PM EDT | Frost Advisory | IWX | 18 hr |
| Apr 20, 3:33 AM EDT | Wind Advisory | IWX | 15 hr |
| Apr 20, 11:23 PM EDT | Special Weather Statement | IWX | 67 min |
| Apr 23, 3:30 AM EDT | Freeze Warning | IWX | 29 hr |
| Apr 25, 1:32 PM EDT | Frost Advisory | IWX | 18 hr |
| Apr 26, 11:36 AM EDT | Frost Advisory | IWX | 20 hr |
| May 3, 3:34 PM EDT | Frost Advisory | IWX | 16 hr |
| May 7, 12:52 AM EDT | Special Weather Statement | IWX | 38 min |
| May 7, 12:52 AM EDT | Special Weather Statement | IWX | 38 min |
| May 7, 1:28 AM EDT | Special Weather Statement | IWX | 47 min |
| May 7, 4:17 AM EDT | Special Weather Statement | IWX | 43 min |
| May 7, 7:19 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| May 7, 8:11 PM EDT | Special Weather Statement | IWX | 64 min |
| May 7, 9:07 PM EDT | Special Weather Statement | IWX | 53 min |
| May 13, 6:06 AM EDT | Areal Flood Advisory | IWX | 7 hr |
| Jun 25, 12:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 1:34 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 25, 2:43 PM EDT | Severe Thunderstorm Warning | IWX | 29 min |
| Jun 29, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 29, 3:11 PM EDT | Special Weather Statement | IWX | 34 min |
| Jul 2, 2:05 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 2, 5:03 PM EDT | Special Weather Statement | IWX | 42 min |
| Jul 2, 5:07 PM EDT | Severe Thunderstorm Warning | IWX | 38 min |
| Jul 14, 10:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 15, 1:05 AM EDT | Special Weather Statement | IWX | 25 min |
| Jul 15, 1:27 AM EDT | Special Weather Statement | IWX | 48 min |
| Jul 20, 1:03 PM EDT | Severe Thunderstorm Warning | IWX | 47 min |
| Jul 20, 2:15 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 20, 2:45 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 20, 5:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 26, 3:03 AM EDT | Heat Advisory | IWX | 66 hr |
| Jul 28, 6:59 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 28, 8:35 PM EDT | Severe Thunderstorm Warning | IWX | 40 min |
| Jul 28, 8:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 29, 12:00 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 29, 1:15 AM EDT | Severe Thunderstorm Warning | IWX | 60 min |
| Jul 29, 1:35 AM EDT | Severe Thunderstorm Warning | IWX | 40 min |
| Jul 29, 1:51 AM EDT | Severe Thunderstorm Warning | IWX | 43 min |
| Jul 29, 1:57 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 5, 1:42 PM EDT | Flood Watch | IWX | 9 hr |
| Aug 9, 1:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 21, 2:48 PM EDT | Heat Advisory | IWX | 68 hr |
| Aug 22, 3:12 AM EDT | Excessive Heat Watch | IWX | 24 hr |
| Aug 23, 3:19 AM EDT | Excessive Heat Warning | IWX | 45 hr |
| Sep 29, 10:28 PM EDT | Dense Fog Advisory | IWX | 13 hr |
| Oct 10, 2:52 PM EDT | Frost Advisory | IWX | 17 hr |
| Oct 22, 2:55 PM EDT | Frost Advisory | IWX | 17 hr |
| Oct 30, 3:11 AM EDT | Freeze Warning | IWX | 31 hr |
| Nov 5, 2:04 AM EST | Dense Fog Advisory | IWX | 9 hr |
| Dec 18, 8:42 AM EST | Special Weather Statement | IWX | 63 min |
| Dec 23, 5:23 PM EST | Dense Fog Advisory | IWX | 20 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 | 10 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 14 |
| Special Weather Statement | 13 |
| Flooding | |
| River Flood Warning | 3 |
| Flood Watch | 2 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 2 |
| Frost Advisory | 6 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.