Alert archive / Nebraska / Sioux County
Weather alerts in Sioux County, Nebraska, 2021
143 weather alerts in 2021, 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 2021. Tap one for its archive.
- Alerts
- 143
- Warnings
- 49
- Watches
- 20
- Advisories
- 19
- Busiest month
- June30 alerts
- Busiest day
- May 26, 20218 alerts
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 11, 12:27 AM MST | High Wind Warning | CYS | 5 days |
| Jan 11, 2:31 AM MST | High Wind Watch | CYS | 55 hr |
| Feb 4, 3:05 PM MST | Winter Weather Advisory | CYS | 3 days |
| Feb 8, 1:52 PM MST | Wind Chill Advisory | CYS | 19 hr |
| Feb 9, 1:47 PM MST | Wind Chill Advisory | CYS | 3 days |
| Feb 10, 3:30 PM MST | Winter Storm Warning | CYS | 4 days |
| Feb 10, 3:30 PM MST | Winter Weather Advisory | CYS | 4 days |
| Feb 13, 12:49 PM MST | Wind Chill Warning | CYS | 46 hr |
| Feb 27, 1:00 PM MST | Winter Weather Advisory | CYS | 16 hr |
| Mar 9, 1:25 AM MST | Winter Storm Warning | CYS | 40 hr |
| Mar 9, 1:25 AM MST | Winter Weather Advisory | CYS | 40 hr |
| Mar 10, 12:12 AM MST | Mesoscale Discussion | SPC | 6 hr |
| Mar 10, 2:15 PM MST | Winter Storm Watch | CYS | 48 hr |
| Mar 11, 2:31 PM MST | Winter Storm Warning | CYS | 3 days |
| Mar 12, 2:11 PM MST | Blizzard Warning | CYS | 59 hr |
| Mar 13, 7:15 PM MST | Mesoscale Discussion | SPC | 6 hr |
| Mar 13, 7:39 PM MST | Mesoscale Discussion | SPC | 6 hr |
| Mar 14, 1:55 AM MST | Mesoscale Discussion | SPC | 6 hr |
| Mar 14, 11:40 AM MDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 15, 4:40 PM MDT | Winter Weather Advisory | CYS | 10 hr |
| Mar 27, 1:54 PM MDT | High Wind Watch | CYS | 37 hr |
| Mar 27, 1:54 PM MDT | High Wind Warning | CYS | 55 hr |
| Apr 6, 2:55 AM MDT | Winter Weather Advisory | CYS | 23 hr |
| Apr 6, 7:17 PM MDT | Winter Storm Warning | CYS | 14 hr |
| Apr 13, 3:12 AM MDT | Winter Storm Warning | CYS | 3 days |
| Apr 13, 3:12 AM MDT | Winter Weather Advisory | CYS | 3 days |
| Apr 16, 11:04 AM MDT | Winter Weather Advisory | CYS | 3 hr |
| Apr 18, 2:57 AM MDT | Winter Weather Advisory | CYS | 46 hr |
| May 1, 7:42 PM MDT | Special Weather Statement | CYS | 33 min |
| May 13, 1:38 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| May 13, 5:04 PM MDT | Special Weather Statement | CYS | 41 min |
| May 20, 12:58 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| May 20, 7:07 PM MDT | Severe Thunderstorm Warning | CYS | 38 min |
| May 21, 5:26 PM MDT | Severe Thunderstorm Warning | CYS | 49 min |
| May 23, 10:53 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 12:06 PM MDT | Tornado Watch | SPC | 8 hr |
| May 23, 1:57 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 2:38 PM MDT | Severe Thunderstorm Warning | CYS | 24 min |
| May 26, 11:45 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 1:27 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 26, 2:50 PM MDT | Special Weather Statement | CYS | 40 min |
| May 26, 3:08 PM MDT | Severe Thunderstorm Warning | CYS | 37 min |
| May 26, 4:15 PM MDT | Special Weather Statement | CYS | 45 min |
| May 26, 4:47 PM MDT | Tornado Warning | CYS | 28 min |
| May 26, 5:41 PM MDT | Severe Thunderstorm Warning | CYS | 34 min |
| May 26, 5:48 PM MDT | Mesoscale Discussion | SPC | 87 min |
| May 28, 9:05 PM MDT | Severe Thunderstorm Warning | CYS | 40 min |
| May 28, 9:45 PM MDT | Special Weather Statement | CYS | 45 min |
| May 28, 10:12 PM MDT | Special Weather Statement | CYS | 33 min |
| May 28, 10:25 PM MDT | Special Weather Statement | CYS | 35 min |
| May 29, 6:46 PM MDT | Severe Thunderstorm Warning | CYS | 29 min |
| May 29, 7:18 PM MDT | Special Weather Statement | CYS | 42 min |
| Jun 5, 7:53 PM MDT | Severe Thunderstorm Warning | CYS | 22 min |
| Jun 6, 7:39 PM MDT | Severe Thunderstorm Warning | CYS | 36 min |
| Jun 7, 2:49 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Jun 9, 2:11 PM MDT | High Wind Watch | CYS | 12 hr |
| Jun 9, 2:11 PM MDT | High Wind Warning | CYS | 39 hr |
| Jun 10, 2:51 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jun 10, 7:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jun 10, 8:08 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 10, 9:24 PM MDT | Special Weather Statement | CYS | 51 min |
| Jun 10, 9:26 PM MDT | Special Weather Statement | CYS | 49 min |
| Jun 10, 9:38 PM MDT | Severe Thunderstorm Warning | CYS | 32 min |
| Jun 10, 10:03 PM MDT | Special Weather Statement | CYS | 42 min |
| Jun 10, 10:07 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Jun 10, 10:23 PM MDT | Severe Thunderstorm Warning | CYS | 67 min |
| Jun 13, 1:16 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jun 13, 3:04 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 13, 5:13 PM MDT | Severe Thunderstorm Warning | CYS | 47 min |
| Jun 13, 5:50 PM MDT | Severe Thunderstorm Warning | CYS | 55 min |
| Jun 13, 5:58 PM MDT | Severe Thunderstorm Warning | CYS | 47 min |
| Jun 13, 6:15 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 6:42 PM MDT | Severe Thunderstorm Warning | CYS | 48 min |
| Jun 13, 7:27 PM MDT | Severe Thunderstorm Warning | CYS | 48 min |
| Jun 14, 1:24 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 18, 12:10 PM MDT | Special Weather Statement | CYS | 35 min |
| Jun 18, 12:27 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 18, 12:49 PM MDT | Special Weather Statement | CYS | 41 min |
| Jun 18, 1:49 PM MDT | Special Weather Statement | CYS | 41 min |
| Jun 24, 7:25 PM MDT | Special Weather Statement | CYS | 20 min |
| Jun 24, 7:45 PM MDT | Special Weather Statement | CYS | 15 min |
| Jun 24, 8:00 PM MDT | Special Weather Statement | CYS | 15 min |
| Jul 1, 1:14 PM MDT | Areal Flood Advisory | CYS | 3 hr |
| Jul 3, 3:01 PM MDT | Severe Thunderstorm Warning | CYS | 30 min |
| Jul 3, 3:33 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 3, 4:46 PM MDT | Severe Thunderstorm Warning | CYS | 28 min |
| Jul 4, 3:22 PM MDT | Severe Thunderstorm Warning | CYS | 38 min |
| Jul 7, 2:11 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 3:58 PM MDT | Severe Thunderstorm Warning | CYS | 47 min |
| Jul 7, 4:39 PM MDT | Severe Thunderstorm Warning | CYS | 51 min |
| Jul 9, 1:38 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jul 9, 2:16 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 9, 3:32 PM MDT | Special Weather Statement | CYS | 28 min |
| Jul 9, 3:54 PM MDT | Severe Thunderstorm Warning | CYS | 36 min |
| Jul 9, 4:30 PM MDT | Severe Thunderstorm Warning | CYS | 45 min |
| Jul 9, 5:16 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 9, 8:04 PM MDT | Severe Thunderstorm Warning | CYS | 41 min |
| Jul 9, 8:31 PM MDT | Tornado Warning | CYS | 44 min |
| Jul 9, 9:01 PM MDT | Severe Thunderstorm Warning | CYS | 44 min |
| Jul 9, 9:33 PM MDT | Severe Thunderstorm Warning | CYS | 57 min |
| Jul 13, 2:21 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jul 13, 4:25 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 13, 10:30 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Jul 16, 2:16 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 17, 2:40 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 17, 4:20 PM MDT | Special Weather Statement | CYS | 40 min |
| Jul 17, 4:59 PM MDT | Special Weather Statement | CYS | 31 min |
| Jul 17, 6:36 PM MDT | Areal Flood Advisory | CYS | 3 hr |
| Jul 17, 7:08 PM MDT | Special Weather Statement | CYS | 37 min |
| Jul 17, 8:34 PM MDT | Special Weather Statement | CYS | 26 min |
| Jul 24, 5:49 PM MDT | Areal Flood Advisory | CYS | 101 min |
| Jul 26, 7:34 PM MDT | Heat Advisory | CYS | 49 hr |
| Aug 6, 1:43 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 14, 3:28 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 14, 4:06 PM MDT | Severe Thunderstorm Warning | CYS | 39 min |
| Aug 14, 4:50 PM MDT | Severe Thunderstorm Warning | CYS | 40 min |
| Aug 14, 5:22 PM MDT | Severe Thunderstorm Warning | CYS | 38 min |
| Aug 14, 5:52 PM MDT | Severe Thunderstorm Warning | CYS | 38 min |
| Aug 18, 7:16 PM MDT | Special Weather Statement | CYS | 29 min |
| Aug 18, 9:17 PM MDT | Special Weather Statement | CYS | 43 min |
| Sep 1, 5:26 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 1, 8:20 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Sep 3, 1:20 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Sep 11, 4:23 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 11, 4:32 PM MDT | Special Weather Statement | CYS | 43 min |
| Oct 11, 3:24 AM MDT | Winter Storm Warning | CYS | 57 hr |
| Oct 11, 3:24 AM MDT | Winter Weather Advisory | CYS | 57 hr |
| Oct 12, 4:26 AM MDT | High Wind Warning | CYS | 38 hr |
| Oct 13, 1:27 AM MDT | Blizzard Warning | CYS | 11 hr |
| Oct 18, 1:43 PM MDT | Winter Weather Advisory | CYS | 40 hr |
| Oct 26, 2:10 AM MDT | High Wind Watch | CYS | 10 hr |
| Oct 26, 8:07 AM MDT | Dense Fog Advisory | CYS | 113 min |
| Oct 30, 2:41 PM MDT | Winter Weather Advisory | CYS | 45 hr |
| Nov 4, 1:30 PM MDT | High Wind Watch | CYS | 13 hr |
| Nov 9, 3:36 AM MST | High Wind Warning | CYS | 8 days |
| Nov 10, 12:58 PM MST | High Wind Watch | CYS | 14 hr |
| Dec 2, 12:46 PM MST | High Wind Watch | CYS | 62 hr |
| Dec 7, 1:38 PM MST | Winter Storm Watch | CYS | 25 hr |
| Dec 8, 10:37 AM MST | Winter Storm Warning | CYS | 52 hr |
| Dec 9, 8:49 PM MST | Mesoscale Discussion | SPC | 5 hr |
| Dec 14, 4:08 AM MST | High Wind Warning | CYS | 49 hr |
| Dec 25, 1:04 PM MST | High Wind Watch | CYS | 15 hr |
| Dec 25, 1:04 PM MST | High Wind Warning | CYS | 39 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 | 30 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 30 |
| Special Weather Statement | 25 |
| Flooding | |
| Areal Flood Advisory | 3 |
| Winter | |
| Blizzard Warning | 2 |
| Winter Storm Warning | 7 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 12 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Wind Chill Warning | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 7 |
| High Wind Watch | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
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.