Alert archive / Iowa / Sioux County
Weather alerts in Sioux County, Iowa, 2018
132 weather alerts in 2018, 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 2018. Tap one for its archive.
- Alerts
- 132
- Warnings
- 57
- Watches
- 17
- Advisories
- 44
- Busiest month
- June24 alerts
- Busiest day
- September 20, 201811 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 1, 12:01 PM CST | Wind Chill Advisory | FSD | 22 hr |
| Jan 9, 3:46 AM CST | Winter Storm Watch | FSD | 35 hr |
| Jan 10, 3:07 AM CST | Winter Weather Advisory | FSD | 38 hr |
| Jan 11, 12:12 PM CST | Wind Chill Advisory | FSD | 22 hr |
| Jan 14, 3:20 AM CST | Wind Chill Advisory | FSD | 56 hr |
| Jan 19, 4:20 AM CST | Winter Storm Watch | FSD | 47 hr |
| Jan 20, 2:54 PM CST | Winter Storm Warning | FSD | 54 hr |
| Jan 21, 3:41 AM CST | Blizzard Warning | FSD | 43 hr |
| Jan 22, 2:02 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 22, 9:20 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 24, 1:03 AM CST | Dense Fog Advisory | FSD | 13 hr |
| Jan 24, 2:32 PM CST | Dense Fog Advisory | FSD | 23 hr |
| Feb 4, 3:12 PM CST | Winter Weather Advisory | FSD | 21 hr |
| Feb 7, 3:41 PM CST | Winter Weather Advisory | FSD | 35 hr |
| Feb 18, 2:53 AM CST | Wind Advisory | FSD | 11 hr |
| Feb 18, 3:48 AM CST | Winter Weather Advisory | FSD | 54 hr |
| Feb 21, 2:59 PM CST | Winter Weather Advisory | FSD | 33 hr |
| Feb 22, 3:56 PM CST | Winter Storm Watch | FSD | 23 hr |
| Feb 23, 3:00 PM CST | Winter Weather Advisory | FSD | 27 hr |
| Feb 23, 10:16 PM CST | Dense Fog Advisory | FSD | 11 hr |
| Mar 4, 4:09 AM CST | Blizzard Warning | FSD | 59 hr |
| Mar 4, 2:25 PM CST | Winter Weather Advisory | FSD | 49 hr |
| Mar 6, 4:07 PM CST | River Flood Warning | FSD | 61 hr |
| Mar 10, 8:54 AM CST | Winter Weather Advisory | FSD | 3 hr |
| Mar 15, 3:48 AM CDT | Winter Weather Advisory | FSD | 45 hr |
| Mar 23, 9:37 AM CDT | River Flood Warning | FSD | 13 days |
| Mar 25, 3:28 PM CDT | Winter Weather Advisory | FSD | 24 hr |
| Mar 30, 3:05 PM CDT | Wind Advisory | FSD | 22 hr |
| Apr 2, 3:45 AM CDT | Winter Storm Watch | FSD | 11 hr |
| Apr 2, 2:20 PM CDT | Winter Weather Advisory | FSD | 31 hr |
| Apr 7, 2:53 PM CDT | Winter Weather Advisory | FSD | 34 hr |
| Apr 11, 3:37 PM CDT | Winter Storm Watch | FSD | 24 hr |
| Apr 12, 3:45 PM CDT | Blizzard Warning | FSD | 60 hr |
| Apr 13, 9:41 AM CDT | River Flood Warning | FSD | 59 hr |
| Apr 14, 10:06 AM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 15, 3:27 AM CDT | Winter Weather Advisory | FSD | 13 hr |
| Apr 16, 3:21 AM CDT | Winter Storm Watch | FSD | 24 hr |
| Apr 17, 3:33 AM CDT | Winter Weather Advisory | FSD | 38 hr |
| Apr 17, 9:50 AM CDT | River Flood Warning | FSD | 18 days |
| Apr 18, 2:59 AM CDT | Winter Weather Advisory | FSD | 15 hr |
| Apr 23, 10:41 AM CDT | River Flood Warning | FSD | 9 days |
| Apr 29, 3:41 AM CDT | Wind Advisory | FSD | 16 hr |
| Apr 29, 1:58 PM CDT | Red Flag Warning | FSD | 5 hr |
| Apr 30, 3:31 AM CDT | Wind Advisory | FSD | 15 hr |
| May 1, 7:15 PM CDT | Severe Thunderstorm Warning | FSD | 45 min |
| May 10, 10:08 AM CDT | River Flood Warning | FSD | 5 days |
| May 15, 1:41 AM CDT | Dense Fog Advisory | FSD | 7 hr |
| May 22, 1:12 AM CDT | Dense Fog Advisory | FSD | 8 hr |
| May 25, 5:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| May 25, 6:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 3:28 AM CDT | Heat Advisory | FSD | 16 hr |
| Jun 1, 11:37 PM CDT | Severe Thunderstorm Warning | FSD | 23 min |
| Jun 11, 3:42 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 13, 11:56 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 14, 10:41 AM CDT | Areal Flood Warning | FSD | 24 hr |
| Jun 14, 2:50 PM CDT | Heat Advisory | FSD | 3 days |
| Jun 16, 7:59 PM CDT | River Flood Warning | FSD | 30 hr |
| Jun 17, 3:52 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 20, 3:16 AM CDT | Flash Flood Watch | FSD | 28 hr |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | 8 days |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | 20 days |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | 8 days |
| Jun 20, 9:37 PM CDT | Areal Flood Warning | FSD | 24 hr |
| Jun 20, 10:18 PM CDT | Areal Flood Warning | FSD | 24 hr |
| Jun 21, 4:01 AM CDT | River Flood Warning | FSD | 4 days |
| Jun 21, 1:07 PM CDT | Areal Flood Warning | FSD | 24 hr |
| Jun 24, 4:46 PM CDT | Flash Flood Warning | FSD | 4 hr |
| Jun 24, 7:53 PM CDT | Flash Flood Warning | FSD | 3 hr |
| Jun 24, 9:52 PM CDT | Flash Flood Watch | FSD | 25 hr |
| Jun 24, 11:13 PM CDT | Flash Flood Warning | FSD | 4 hr |
| Jun 25, 2:40 AM CDT | Areal Flood Warning | FSD | 12 hr |
| Jun 26, 5:21 AM CDT | River Flood Warning | FSD | 4 days |
| Jun 28, 3:17 AM CDT | Heat Advisory | FSD | 41 hr |
| Jun 30, 9:12 AM CDT | River Flood Warning | FSD | 3 days |
| Jun 30, 12:40 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 3, 11:11 AM CDT | River Flood Warning | FSD | 4 days |
| Jul 4, 4:16 AM CDT | Heat Advisory | FSD | 16 hr |
| Jul 4, 9:37 AM CDT | River Flood Warning | FSD | 24 hr |
| Jul 4, 5:35 PM CDT | Severe Thunderstorm Warning | FSD | 40 min |
| Jul 10, 2:39 PM CDT | Heat Advisory | FSD | 53 hr |
| Jul 12, 4:47 AM CDT | Flash Flood Watch | FSD | 26 hr |
| Jul 12, 5:04 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 13, 9:50 AM CDT | River Flood Warning | FSD | 5 days |
| Jul 15, 6:18 AM CDT | Dense Fog Advisory | FSD | 3 hr |
| Aug 5, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 5, 1:54 AM CDT | Severe Thunderstorm Warning | FSD | 51 min |
| Aug 5, 2:25 AM CDT | Severe Thunderstorm Warning | FSD | 50 min |
| Aug 5, 2:41 AM CDT | Severe Thunderstorm Warning | FSD | 49 min |
| Aug 26, 9:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 11:49 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 27, 2:51 PM CDT | Severe Thunderstorm Warning | FSD | 39 min |
| Aug 27, 3:30 PM CDT | Severe Thunderstorm Warning | FSD | 30 min |
| Aug 28, 3:12 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 28, 3:48 AM CDT | Severe Thunderstorm Warning | FSD | 42 min |
| Aug 28, 4:35 AM CDT | Severe Thunderstorm Warning | FSD | 40 min |
| Aug 28, 5:11 AM CDT | Severe Thunderstorm Warning | FSD | 49 min |
| Sep 19, 2:40 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 19, 10:31 AM CDT | Flash Flood Watch | FSD | 26 hr |
| Sep 20, 4:35 AM CDT | Flash Flood Warning | FSD | 5 hr |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | 10 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | 4 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | 28 hr |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | 4 days |
| Sep 20, 9:15 AM CDT | River Flood Warning | FSD | 61 hr |
| Sep 20, 9:30 AM CDT | Flash Flood Warning | FSD | 3 hr |
| Sep 20, 12:39 PM CDT | Areal Flood Warning | FSD | 12 hr |
| Sep 20, 2:15 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 20, 2:44 PM CDT | River Flood Warning | FSD | 5 days |
| Sep 20, 3:11 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 21, 12:31 AM CDT | Areal Flood Warning | FSD | 24 hr |
| Sep 22, 12:35 AM CDT | Areal Flood Warning | FSD | 24 hr |
| Oct 3, 10:18 AM CDT | Wind Advisory | FSD | 11 hr |
| Oct 7, 3:37 PM CDT | Flood Watch | FSD | 54 hr |
| Oct 10, 9:46 AM CDT | River Flood Warning | FSD | 9 days |
| Oct 11, 2:15 AM CDT | River Flood Warning | FSD | 48 hr |
| Oct 11, 3:35 AM CDT | Freeze Warning | FSD | 29 hr |
| Oct 11, 4:38 AM CDT | River Flood Warning | FSD | 67 hr |
| Nov 2, 8:15 PM CDT | River Flood Warning | FSD | 5 days |
| Nov 16, 3:26 AM CST | Winter Weather Advisory | FSD | 25 hr |
| Nov 22, 4:24 AM CST | Dense Fog Advisory | FSD | 7 hr |
| Nov 28, 4:05 AM CST | Winter Weather Advisory | FSD | 17 hr |
| Nov 28, 2:25 PM CST | Winter Storm Watch | FSD | 48 hr |
| Nov 29, 2:45 PM CST | Winter Storm Warning | FSD | 69 hr |
| Nov 29, 9:09 PM CST | Dense Fog Advisory | FSD | 15 hr |
| Nov 30, 2:46 PM CST | Winter Weather Advisory | FSD | 43 hr |
| Dec 1, 11:33 AM CST | Mesoscale Discussion | SPC | 3 hr |
| Dec 8, 2:00 AM CST | Dense Fog Advisory | FSD | 10 hr |
| Dec 12, 3:12 PM CST | Dense Fog Advisory | FSD | 17 hr |
| Dec 14, 1:06 AM CST | Dense Fog Advisory | FSD | 7 hr |
| Dec 26, 3:25 AM CST | Winter Weather Advisory | FSD | 57 hr |
| Dec 26, 12:05 PM CST | Flood Watch | FSD | 31 hr |
| Dec 30, 3:33 PM CST | Winter Weather Advisory | FSD | 29 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 | 11 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 14 |
| Flooding | |
| Areal Flood Warning | 8 |
| Flash Flood Warning | 5 |
| River Flood Warning | 26 |
| Flash Flood Watch | 4 |
| Flood Watch | 2 |
| Winter | |
| Blizzard Warning | 3 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 7 |
| Winter Weather Advisory | 20 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.