Alert archive / Iowa / Cass County
Weather alerts in Cass County, Iowa, 2021
99 weather alerts in 2021, 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 2021. Tap one for its archive.
- Alerts
- 99
- Warnings
- 25
- Watches
- 15
- Advisories
- 35
- Busiest month
- June19 alerts
- Busiest day
- July 10, 20216 alerts
Over time
By month
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 |
|---|---|---|---|
| Jan 2, 2:12 PM CST | Dense Fog Advisory | DMX | 22 hr |
| Jan 3, 2:40 PM CST | Dense Fog Advisory | DMX | 21 hr |
| Jan 13, 3:24 PM CST | Wind Advisory | DMX | 33 hr |
| Jan 13, 3:49 PM CST | Winter Weather Advisory | DMX | 50 hr |
| Jan 14, 4:04 AM CST | Blizzard Warning | DMX | 35 hr |
| Jan 23, 3:27 PM CST | Winter Storm Watch | DMX | 12 hr |
| Jan 24, 3:17 AM CST | Winter Storm Warning | DMX | 57 hr |
| Jan 25, 10:41 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 25, 3:26 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 2, 1:36 AM CST | Dense Fog Advisory | DMX | 9 hr |
| Feb 3, 3:35 AM CST | Winter Weather Advisory | DMX | 48 hr |
| Feb 5, 2:42 PM CST | Winter Weather Advisory | DMX | 27 hr |
| Feb 7, 3:02 AM CST | Winter Weather Advisory | DMX | 12 hr |
| Feb 8, 2:22 PM CST | Wind Chill Advisory | DMX | 19 hr |
| Feb 11, 2:56 PM CST | Wind Chill Advisory | DMX | 45 hr |
| Feb 12, 4:04 AM CST | Wind Chill Advisory | DMX | 32 hr |
| Feb 12, 2:59 PM CST | Wind Chill Watch | DMX | 13 hr |
| Feb 13, 3:52 AM CST | Wind Chill Warning | DMX | 3 days |
| Feb 20, 3:32 AM CST | Winter Weather Advisory | DMX | 40 hr |
| Feb 21, 8:52 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 21, 9:16 AM CST | Winter Storm Warning | DMX | 9 hr |
| Feb 22, 12:47 AM CST | Dense Fog Advisory | DMX | 5 hr |
| Mar 7, 2:27 AM CST | Red Flag Warning | DMX | 16 hr |
| Mar 10, 3:55 AM CST | Wind Advisory | DMX | 20 hr |
| Mar 10, 4:02 AM CST | Red Flag Warning | DMX | 14 hr |
| Mar 10, 2:15 PM CST | High Wind Warning | DMX | 4 hr |
| Mar 13, 3:09 PM CST | Wind Advisory | DMX | 27 hr |
| Mar 16, 1:06 AM CDT | Dense Fog Advisory | DMX | 8 hr |
| Mar 17, 4:49 AM CDT | Dense Fog Advisory | DMX | 4 hr |
| Mar 21, 2:28 AM CDT | Wind Advisory | DMX | 14 hr |
| Mar 28, 4:22 AM CDT | Fire Weather Watch | DMX | 11 hr |
| Mar 28, 2:52 PM CDT | Red Flag Warning | DMX | 29 hr |
| Mar 28, 3:02 PM CDT | Wind Advisory | DMX | 29 hr |
| Apr 2, 10:50 AM CDT | Red Flag Warning | DMX | 9 hr |
| Apr 13, 2:51 PM CDT | Frost Advisory | DMX | 17 hr |
| Apr 14, 3:14 PM CDT | Freeze Warning | DMX | 17 hr |
| Apr 19, 3:28 AM CDT | Freeze Watch | DMX | 11 hr |
| Apr 19, 2:56 PM CDT | Freeze Warning | DMX | 18 hr |
| Apr 19, 2:56 PM CDT | Freeze Warning | DMX | 42 hr |
| Apr 21, 3:34 AM CDT | Freeze Warning | DMX | 29 hr |
| May 1, 3:57 AM CDT | Red Flag Warning | DMX | 15 hr |
| May 15, 1:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| May 25, 7:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jun 1, 1:27 AM CDT | Dense Fog Advisory | DMX | 8 hr |
| Jun 16, 3:34 PM CDT | Heat Advisory | DMX | 28 hr |
| Jun 16, 9:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 16, 10:05 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 16, 10:53 PM CDT | Special Weather Statement | DMX | 52 min |
| Jun 16, 11:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 18, 9:27 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 10:08 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 18, 10:54 PM CDT | Severe Thunderstorm Warning | DMX | 51 min |
| Jun 18, 11:32 PM CDT | Severe Thunderstorm Warning | DMX | 28 min |
| Jun 19, 11:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 19, 11:59 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 20, 3:37 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 20, 2:02 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 22, 3:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 4:49 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 22, 6:51 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jun 24, 1:36 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 24, 2:20 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 9, 9:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 9:58 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 9, 11:41 PM CDT | Severe Thunderstorm Warning | DMX | 49 min |
| Jul 9, 11:56 PM CDT | Severe Thunderstorm Warning | DMX | 49 min |
| Jul 10, 12:41 AM CDT | Severe Thunderstorm Warning | DMX | 64 min |
| Jul 10, 2:18 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 26, 3:33 AM CDT | Excessive Heat Watch | DMX | 36 hr |
| Jul 27, 3:04 PM CDT | Heat Advisory | DMX | 52 hr |
| Jul 30, 3:19 PM CDT | Flash Flood Watch | DMX | 15 hr |
| Jul 30, 8:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Aug 6, 1:21 AM CDT | Special Weather Statement | DMX | 54 min |
| Aug 7, 9:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Aug 7, 11:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Aug 8, 3:39 PM CDT | Heat Advisory | DMX | 51 hr |
| Aug 10, 12:56 PM CDT | Heat Advisory | DMX | 30 hr |
| Aug 23, 3:13 PM CDT | Heat Advisory | DMX | 28 hr |
| Aug 26, 3:30 AM CDT | Heat Advisory | DMX | 17 hr |
| Aug 26, 7:37 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Aug 31, 12:07 AM CDT | Severe Thunderstorm Warning | DMX | 38 min |
| Aug 31, 3:02 AM CDT | Mesoscale Discussion | SPC | 118 min |
| Oct 15, 1:08 PM CDT | Frost Advisory | DMX | 20 hr |
| Oct 21, 2:49 AM CDT | Freeze Warning | DMX | 30 hr |
| Oct 22, 2:39 PM CDT | Frost Advisory | DMX | 18 hr |
| Nov 11, 2:52 AM CST | Wind Advisory | DMX | 39 hr |
| Dec 5, 2:43 AM CST | Wind Advisory | DMX | 30 hr |
| Dec 13, 3:40 AM CST | High Wind Watch | DMX | 24 hr |
| Dec 14, 4:09 AM CST | High Wind Warning | DMX | 47 hr |
| Dec 15, 12:28 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 15, 1:23 PM CST | Tornado Watch | SPC | 7 hr |
| Dec 15, 3:55 PM CST | Mesoscale Discussion | SPC | 95 min |
| Dec 15, 4:13 PM CST | Severe Thunderstorm Warning | DMX | 77 min |
| Dec 15, 4:37 PM CST | Tornado Warning | DMX | 23 min |
| Dec 15, 4:53 PM CST | Tornado Warning | DMX | 33 min |
| Dec 15, 11:52 PM CST | Wind Advisory | DMX | 6 hr |
| Dec 24, 4:05 AM CST | Dense Fog Advisory | DMX | 8 hr |
| Dec 30, 9:07 PM CST | Dense Fog Advisory | DMX | 21 hr |
| Dec 31, 11:11 AM CST | Winter Weather Advisory | DMX | 10 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 archive20202022
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. Rebuilt daily.