Alert archive / Indiana / Cass County
Weather alerts in Cass County, Indiana, 2024
81 weather alerts in 2024, 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 2024. Tap one for its archive.
- Alerts
- 81
- Warnings
- 17
- Watches
- 12
- Advisories
- 21
- Busiest month
- January14 alerts
- Busiest day
- March 14, 20248 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 Cass County in 2024 had a tornado report inside them.
Cass County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 6 | 4 | 33% | 30 | 57% | 16 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: tornado warnings | 36 | 14 | 61% | 47 | 81% | 16 min |
| NWS Northern Indiana: severe thunderstorm warnings | 121 | 68 | 44% | 440 | 50% | 17 min |
| NWS Northern Indiana: flash flood warnings | 2 | 0 | 100% | 3 | 0% |
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 8, 3:56 AM EST | Winter Weather Advisory | IWX | 30 hr |
| Jan 11, 2:28 PM EST | Winter Weather Advisory | IWX | 53 hr |
| Jan 13, 4:23 AM EST | Wind Chill Advisory | IWX | 56 hr |
| Jan 13, 7:10 PM EST | Winter Weather Advisory | IWX | 4 days |
| Jan 14, 8:59 AM EST | Wind Chill Warning | IWX | 4 hr |
| Jan 14, 8:59 AM EST | Wind Chill Advisory | IWX | 27 hr |
| Jan 14, 9:00 PM EST | Wind Chill Warning | IWX | 15 hr |
| Jan 15, 11:56 AM EST | Wind Chill Advisory | IWX | 47 hr |
| Jan 18, 5:03 AM EST | Winter Weather Advisory | IWX | 31 hr |
| Jan 21, 3:03 PM EST | Winter Weather Advisory | IWX | 44 hr |
| Jan 22, 10:17 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 23, 2:13 PM EST | Dense Fog Advisory | IWX | 56 hr |
| Jan 26, 8:47 AM EST | River Flood Warning | IWX | 38 hr |
| Jan 26, 2:00 PM EST | Dense Fog Advisory | IWX | 23 hr |
| Feb 22, 6:43 AM EST | Special Weather Statement | IWX | 32 min |
| Feb 22, 7:21 AM EST | Special Weather Statement | IWX | 24 min |
| Mar 14, 10:49 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 14, 10:56 AM EDT | Special Weather Statement | IWX | 49 min |
| Mar 14, 1:36 PM EDT | River Flood Warning | IWX | 14 hr |
| Mar 14, 4:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Mar 14, 5:13 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 14, 5:16 PM EDT | Severe Thunderstorm Warning | IWX | 29 min |
| Mar 14, 5:46 PM EDT | Severe Thunderstorm Warning | IWX | 29 min |
| Mar 14, 6:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Apr 1, 10:37 AM EDT | River Flood Warning | IWX | 66 hr |
| Apr 1, 12:14 PM EDT | Flood Watch | IWX | 22 hr |
| Apr 2, 10:40 AM EDT | River Flood Warning | IWX | 21 hr |
| Apr 9, 3:03 PM EDT | Flood Watch | IWX | 63 hr |
| Apr 11, 11:24 AM EDT | River Flood Warning | IWX | 28 hr |
| Apr 17, 10:40 AM EDT | Mesoscale Discussion | SPC | 65 min |
| Apr 21, 2:50 PM EDT | Frost Advisory | IWX | 17 hr |
| Apr 24, 2:28 PM EDT | Frost Advisory | IWX | 19 hr |
| May 2, 4:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| May 7, 1:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 7, 2:28 PM EDT | Tornado Watch | SPC | 12 hr |
| May 7, 3:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 7, 6:25 PM EDT | Special Weather Statement | IWX | 35 min |
| May 22, 1:03 AM EDT | Special Weather Statement | IWX | 57 min |
| May 24, 4:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| May 24, 6:03 PM EDT | Severe Thunderstorm Warning | IWX | 27 min |
| May 27, 2:28 AM EDT | Special Weather Statement | IWX | 62 min |
| Jun 5, 11:01 AM EDT | Special Weather Statement | IWX | 29 min |
| Jun 5, 11:38 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 5, 11:58 AM EDT | Special Weather Statement | IWX | 32 min |
| Jun 13, 2:50 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 13, 8:17 PM EDT | Special Weather Statement | IWX | 28 min |
| Jun 14, 12:28 AM EDT | Special Weather Statement | IWX | 32 min |
| Jun 17, 4:24 AM EDT | Heat Advisory | IWX | 6 days |
| Jun 25, 10:02 AM EDT | Special Weather Statement | IWX | 58 min |
| Jun 25, 11:19 AM EDT | Severe Thunderstorm Warning | IWX | 13 min |
| Jun 29, 6:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 14, 10:08 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 3:50 PM EDT | Flood Watch | IWX | 34 hr |
| Jul 14, 10:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 14, 11:50 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 15, 1:54 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 15, 3:17 AM EDT | Special Weather Statement | IWX | 43 min |
| Jul 15, 7:53 PM EDT | Tornado Watch | SPC | 6 hr |
| Jul 15, 10:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 15, 11:14 PM EDT | Severe Thunderstorm Warning | IWX | 61 min |
| Jul 15, 11:45 PM EDT | Tornado Warning | IWX | 48 min |
| Jul 16, 12:10 AM EDT | Severe Thunderstorm Warning | IWX | 50 min |
| Jul 29, 4:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 2, 4:50 PM EDT | Special Weather Statement | IWX | 25 min |
| Aug 17, 12:28 AM EDT | Special Weather Statement | IWX | 32 min |
| Aug 25, 3:05 PM EDT | Excessive Heat Watch | IWX | 23 hr |
| Aug 26, 2:29 PM EDT | Excessive Heat Warning | IWX | 32 hr |
| Aug 27, 3:09 PM EDT | Heat Advisory | IWX | 25 hr |
| Aug 27, 8:15 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 30, 4:41 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 20, 11:27 PM EDT | Dense Fog Advisory | IWX | 11 hr |
| Sep 24, 2:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 26, 2:21 PM EDT | Wind Advisory | IWX | 33 hr |
| Oct 1, 5:00 AM EDT | Dense Fog Advisory | IWX | 3 hr |
| Oct 16, 12:23 PM EDT | Freeze Warning | IWX | 21 hr |
| Oct 28, 3:25 PM EDT | Fire Weather Watch | IWX | 12 hr |
| Oct 29, 3:25 AM EDT | Red Flag Warning | IWX | 17 hr |
| Nov 4, 2:05 PM EST | Wind Advisory | IWX | 23 hr |
| Dec 4, 1:38 PM EST | Wind Advisory | IWX | 14 hr |
| Dec 15, 9:09 PM EST | Dense Fog Advisory | IWX | 7 hr |
| Dec 29, 2:35 AM EST | Wind 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 | 6 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 14 |
| Flooding | |
| River Flood Warning | 5 |
| Flood Watch | 3 |
| Winter | |
| Winter Weather Advisory | 5 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Warning | 2 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.