Alert archive / Iowa / Sioux County
Weather alerts in Sioux County, Iowa, 2020
104 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sioux County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 104
- Warnings
- 29
- Watches
- 16
- Advisories
- 41
- Busiest month
- October16 alerts
- Busiest day
- October 11, 20208 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 4, 2:10 PM CST | Wind Advisory | FSD | 25 hr |
| Jan 13, 4:25 PM CST | Winter Weather Advisory | FSD | 8 hr |
| Jan 14, 2:20 PM CST | Winter Weather Advisory | FSD | 19 hr |
| Jan 15, 2:44 PM CST | Winter Storm Watch | FSD | 37 hr |
| Jan 16, 3:46 AM CST | Winter Weather Advisory | FSD | 8 hr |
| Jan 16, 11:34 AM CST | Winter Storm Warning | FSD | 36 hr |
| Jan 17, 3:57 AM CST | Blizzard Warning | FSD | 38 hr |
| Jan 17, 6:32 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 18, 3:43 AM CST | Wind Chill Advisory | FSD | 32 hr |
| Jan 21, 8:18 PM CST | Winter Weather Advisory | FSD | 20 hr |
| Jan 22, 3:23 PM CST | Dense Fog Advisory | FSD | 21 hr |
| Jan 25, 11:58 PM CST | Dense Fog Advisory | FSD | 12 hr |
| Jan 26, 2:01 PM CST | Winter Weather Advisory | FSD | 19 hr |
| Jan 29, 5:56 PM CST | Dense Fog Advisory | FSD | 42 hr |
| Feb 11, 3:32 PM CST | Winter Weather Advisory | FSD | 26 hr |
| Feb 11, 8:35 PM CST | Wind Chill Advisory | FSD | 36 hr |
| Feb 14, 3:18 AM CST | Wind Advisory | FSD | 16 hr |
| Mar 4, 2:33 PM CST | Wind Advisory | FSD | 27 hr |
| Mar 9, 9:33 AM CDT | River Flood Warning | FSD | 54 hr |
| Mar 11, 2:59 AM CDT | Dense Fog Advisory | FSD | 9 hr |
| Mar 18, 9:45 AM CDT | River Flood Warning | FSD | 5 days |
| Mar 18, 3:00 PM CDT | Winter Weather Advisory | FSD | 37 hr |
| Mar 23, 6:32 AM CDT | Dense Fog Advisory | FSD | 4 hr |
| Mar 27, 3:44 AM CDT | Flood Watch | FSD | 42 hr |
| Mar 27, 11:15 AM CDT | River Flood Warning | FSD | 8 days |
| Mar 27, 3:41 PM CDT | Wind Advisory | FSD | 36 hr |
| Mar 29, 3:21 PM CDT | River Flood Warning | FSD | 23 hr |
| Mar 29, 3:21 PM CDT | River Flood Warning | FSD | 21 days |
| Apr 1, 4:42 AM CDT | Winter Weather Advisory | FSD | 53 hr |
| Apr 8, 3:29 PM CDT | Wind Advisory | FSD | 26 hr |
| Apr 10, 3:32 PM CDT | Winter Storm Watch | FSD | 23 hr |
| Apr 11, 3:08 AM CDT | Winter Storm Warning | FSD | 43 hr |
| Apr 19, 3:04 PM CDT | Fire Weather Watch | FSD | 13 hr |
| Apr 20, 4:05 AM CDT | Red Flag Warning | FSD | 15 hr |
| May 7, 3:49 AM CDT | Freeze Watch | FSD | 12 hr |
| May 7, 3:31 PM CDT | Frost Advisory | FSD | 17 hr |
| May 8, 3:32 AM CDT | Frost Advisory | FSD | 28 hr |
| May 9, 3:38 AM CDT | Freeze Warning | FSD | 29 hr |
| May 10, 4:20 AM CDT | Freeze Warning | FSD | 28 hr |
| May 11, 9:24 PM CDT | Frost Advisory | FSD | 11 hr |
| May 23, 11:58 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 2, 3:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 4, 5:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 8, 11:36 AM CDT | Wind Advisory | FSD | 7 hr |
| Jun 9, 3:50 AM CDT | Wind Advisory | FSD | 27 hr |
| Jun 21, 2:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 21, 2:53 PM CDT | Severe Thunderstorm Warning | FSD | 37 min |
| Jun 21, 3:19 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 3:20 PM CDT | Severe Thunderstorm Warning | FSD | 40 min |
| Jun 21, 3:55 PM CDT | Severe Thunderstorm Warning | FSD | 50 min |
| Jun 21, 6:59 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 1:16 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 1:57 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 7:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 16, 2:34 PM CDT | Heat Advisory | FSD | 29 hr |
| Jul 17, 4:05 AM CDT | Excessive Heat Watch | FSD | 11 hr |
| Jul 17, 9:55 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 17, 2:36 PM CDT | Excessive Heat Warning | FSD | 29 hr |
| Jul 23, 3:03 AM CDT | Heat Advisory | FSD | 66 hr |
| Jul 23, 4:25 PM CDT | Heat Advisory | FSD | 53 hr |
| Jul 28, 6:12 PM CDT | Flash Flood Warning | FSD | 3 hr |
| Aug 8, 10:10 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 9, 1:46 AM CDT | Mesoscale Discussion | SPC | 59 min |
| Aug 9, 2:18 AM CDT | Severe Thunderstorm Warning | FSD | 42 min |
| Aug 9, 10:59 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 10, 3:19 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 10, 6:06 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 14, 1:57 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 2:17 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 14, 5:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Aug 24, 3:54 AM CDT | Heat Advisory | FSD | 17 hr |
| Sep 13, 4:33 AM CDT | Dense Fog Advisory | FSD | 4 hr |
| Sep 29, 10:47 AM CDT | Red Flag Warning | FSD | 8 hr |
| Sep 29, 2:36 PM CDT | Wind Advisory | FSD | 29 hr |
| Sep 30, 3:33 AM CDT | Red Flag Warning | FSD | 15 hr |
| Oct 1, 3:12 AM CDT | Frost Advisory | FSD | 29 hr |
| Oct 6, 3:22 AM CDT | Red Flag Warning | FSD | 16 hr |
| Oct 8, 1:31 PM CDT | Red Flag Warning | FSD | 4 hr |
| Oct 11, 12:11 PM CDT | Wind Advisory | FSD | 7 hr |
| Oct 11, 3:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Oct 11, 4:54 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Oct 11, 5:13 PM CDT | Severe Thunderstorm Warning | FSD | 47 min |
| Oct 11, 5:53 PM CDT | Severe Thunderstorm Warning | FSD | 52 min |
| Oct 11, 6:13 PM CDT | Severe Thunderstorm Warning | FSD | 32 min |
| Oct 11, 6:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Oct 11, 6:52 PM CDT | Severe Thunderstorm Warning | FSD | 38 min |
| Oct 11, 7:20 PM CDT | Severe Thunderstorm Warning | FSD | 28 min |
| Oct 13, 2:40 PM CDT | Wind Advisory | FSD | 31 hr |
| Oct 13, 2:47 PM CDT | Fire Weather Watch | FSD | 14 hr |
| Oct 13, 2:47 PM CDT | Red Flag Warning | FSD | 28 hr |
| Oct 23, 3:10 PM CDT | Winter Weather Advisory | FSD | 58 hr |
| Nov 6, 2:59 AM CST | Red Flag Warning | FSD | 15 hr |
| Nov 7, 2:33 PM CST | Wind Advisory | FSD | 27 hr |
| Nov 9, 3:29 PM CST | Winter Storm Watch | FSD | 12 hr |
| Nov 9, 3:29 PM CST | Winter Weather Advisory | FSD | 30 hr |
| Nov 10, 9:42 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Nov 11, 12:47 AM CST | Dense Fog Advisory | FSD | 6 hr |
| Dec 17, 6:14 AM CST | Dense Fog Advisory | FSD | 7 hr |
| Dec 21, 3:16 AM CST | Wind Advisory | FSD | 13 hr |
| Dec 22, 3:54 AM CST | Winter Storm Watch | FSD | 17 hr |
| Dec 22, 2:38 PM CST | Blizzard Warning | FSD | 36 hr |
| Dec 23, 9:38 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Dec 27, 7:00 PM CST | Winter Storm Watch | FSD | 8 hr |
| Dec 28, 3:01 AM CST | Winter Weather Advisory | FSD | 42 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 | 9 |
| Severe Thunderstorm Watch | 6 |
| Mesoscale Discussion | 18 |
| Flooding | |
| Flash Flood Warning | 1 |
| River Flood Warning | 5 |
| Flood Watch | 1 |
| Winter | |
| Blizzard Warning | 2 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 5 |
| Winter Weather Advisory | 11 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 12 |
| Fire | |
| Red Flag Warning | 7 |
| Fire Weather Watch | 2 |
| 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 archive20192021
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.