Alert archive / Iowa / Cass County / 2026
Weather alerts in Cass County, Iowa, September 2026
18 weather alerts in September 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 18
- Warnings
- 5
- Watches
- 5
- Advisories
- 1
- Busiest day
- September 15, 20267 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 6, 2:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 6, 4:42 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Sep 8, 2:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Sep 9, 1:49 AM CDT | Flash Flood Warning | DMX | 5 hr |
| Sep 13, 8:19 PM CDT | Flood Watch | DMX | 3 days |
| Sep 14, 10:33 AM CDT | Special Weather Statement | DMX | 42 min |
| Sep 14, 3:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 14, 4:51 PM CDT | Tornado Watch | SPC | 7 hr |
| Sep 14, 6:18 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Sep 14, 7:20 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Sep 14, 7:40 PM CDT | Severe Thunderstorm Warning | DMX | 50 min |
| Sep 14, 8:24 PM CDT | Severe Thunderstorm Warning | DMX | 51 min |
| Sep 15, 1:28 AM CDT | Special Weather Statement | DMX | 32 min |
| Sep 15, 1:43 AM CDT | Severe Thunderstorm Warning | DMX | 32 min |
| Sep 15, 3:01 AM CDT | Flash Flood Warning | DMX | 4 hr |
| Sep 15, 8:08 AM CDT | River Flood Watch | DMX | 8 hr |
| Sep 16, 8:20 PM CDT | Dense Fog Advisory | DMX | 14 hr |
| Sep 28, 1:42 PM CDT | Flood Watch | DMX | 3 days |
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 | 3 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 5 |
| Special Weather Statement | 2 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flood Watch | 2 |
| River Flood Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
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.