Alert archive / Iowa / Sioux County
Weather alerts in Sioux County, Iowa, 2011
105 weather alerts in 2011, 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 2011. Tap one for its archive.
- Alerts
- 105
- Warnings
- 33
- Watches
- 13
- Advisories
- 37
- Busiest month
- June20 alerts
- Busiest day
- June 21, 20116 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, 3:28 AM CST | Wind Chill Advisory | FSD | 9 hr |
| Jan 8, 2:24 PM CST | Winter Weather Advisory | FSD | 64 hr |
| Jan 11, 3:14 PM CST | Wind Chill Advisory | FSD | 19 hr |
| Jan 16, 9:45 PM CST | Winter Weather Advisory | FSD | 6 hr |
| Jan 28, 9:09 AM CST | Dense Fog Advisory | FSD | 3 hr |
| Jan 29, 3:39 PM CST | Winter Weather Advisory | FSD | 3 days |
| Jan 31, 3:17 PM CST | Wind Chill Warning | FSD | 45 hr |
| Feb 2, 2:58 PM CST | Wind Chill Advisory | FSD | 15 hr |
| Feb 3, 5:48 AM CST | Wind Chill Advisory | FSD | 3 hr |
| Feb 5, 10:26 AM CST | Freezing Rain Advisory | FSD | 106 min |
| Feb 7, 3:48 AM CST | Wind Chill Advisory | FSD | 32 hr |
| Feb 8, 2:37 PM CST | Wind Chill Advisory | FSD | 21 hr |
| Feb 12, 2:41 PM CST | Wind Advisory | FSD | 36 hr |
| Feb 16, 5:55 PM CST | Dense Fog Advisory | FSD | 16 hr |
| Feb 18, 4:18 AM CST | Winter Storm Watch | FSD | 35 hr |
| Feb 18, 8:58 AM CST | River Flood Warning | FSD | 26 hr |
| Feb 18, 1:31 PM CST | River Flood Warning | FSD | 45 hr |
| Feb 19, 3:37 PM CST | Ice Storm Warning | FSD | 24 hr |
| Feb 19, 11:25 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Mar 10, 3:56 AM CST | Dense Fog Advisory | FSD | 7 hr |
| Mar 11, 4:00 AM CST | Wind Advisory | FSD | 32 hr |
| Mar 14, 9:18 AM CDT | Dense Fog Advisory | FSD | 3 hr |
| Mar 15, 1:17 PM CDT | River Flood Watch | FSD | 6 days |
| Mar 16, 11:32 AM CDT | River Flood Warning | FSD | 54 days |
| Mar 21, 10:05 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 3, 4:17 AM CDT | Wind Advisory | FSD | 36 hr |
| Apr 9, 5:48 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 9, 9:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 9, 9:15 PM CDT | Severe Thunderstorm Warning | FSD | 30 min |
| Apr 9, 10:24 PM CDT | Severe Thunderstorm Warning | FSD | 36 min |
| Apr 29, 3:12 AM CDT | Wind Advisory | FSD | 16 hr |
| Apr 29, 9:11 PM CDT | Wind Advisory | FSD | 28 hr |
| May 1, 3:55 AM CDT | Wind Advisory | FSD | 13 hr |
| May 11, 5:03 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 11, 5:42 PM CDT | Severe Thunderstorm Warning | FSD | 48 min |
| May 11, 5:48 PM CDT | Severe Thunderstorm Warning | FSD | 42 min |
| May 11, 6:37 PM CDT | Tornado Warning | FSD | 23 min |
| May 11, 6:49 PM CDT | Severe Thunderstorm Warning | FSD | 41 min |
| May 15, 3:18 PM CDT | Frost Advisory | FSD | 17 hr |
| May 20, 9:18 AM CDT | River Flood Warning | FSD | 19 days |
| May 21, 12:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| May 21, 2:25 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| May 21, 6:07 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 21, 8:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 24, 3:22 PM CDT | Flash Flood Watch | FSD | 22 hr |
| May 24, 3:30 PM CDT | Wind Advisory | FSD | 27 hr |
| May 29, 3:54 PM CDT | Wind Advisory | FSD | 27 hr |
| May 29, 9:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 29, 10:58 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 30, 8:43 PM CDT | Tornado Watch | SPC | 5 hr |
| May 30, 10:09 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 5:46 PM CDT | Severe Thunderstorm Warning | FSD | 29 min |
| Jun 1, 5:46 PM CDT | Severe Thunderstorm Warning | FSD | 29 min |
| Jun 1, 6:08 PM CDT | Severe Thunderstorm Warning | FSD | 37 min |
| Jun 9, 5:09 PM CDT | Severe Thunderstorm Warning | FSD | 36 min |
| Jun 14, 7:58 PM CDT | River Flood Warning | FSD | 17 days |
| Jun 17, 6:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 17, 7:09 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 19, 3:40 AM CDT | Flash Flood Watch | FSD | 55 hr |
| Jun 20, 6:53 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 20, 9:02 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 20, 9:18 PM CDT | Flash Flood Warning | FSD | 2 hr |
| Jun 20, 9:34 PM CDT | Severe Thunderstorm Warning | FSD | 41 min |
| Jun 20, 9:39 PM CDT | Flash Flood Warning | FSD | 3 hr |
| Jun 20, 10:14 PM CDT | Severe Thunderstorm Warning | FSD | 46 min |
| Jun 21, 6:34 AM CDT | River Flood Warning | FSD | 30 hr |
| Jun 26, 6:16 AM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 26, 7:56 PM CDT | Flash Flood Warning | FSD | 3 hr |
| Jun 26, 8:58 PM CDT | High Wind Warning | FSD | 4 hr |
| Jun 26, 10:54 PM CDT | Areal Flood Warning | FSD | 36 hr |
| Jun 29, 3:18 PM CDT | Heat Advisory | FSD | 28 hr |
| Jul 1, 12:59 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Jul 5, 3:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 10, 1:03 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Jul 10, 9:55 AM CDT | River Flood Warning | FSD | 14 days |
| Jul 10, 10:27 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jul 10, 11:56 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 11, 1:53 AM CDT | Severe Thunderstorm Warning | FSD | 37 min |
| Jul 12, 2:09 AM CDT | Mesoscale Discussion | SPC | 66 min |
| Jul 15, 3:42 AM CDT | Excessive Heat Warning | FSD | 6 days |
| Jul 22, 3:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 22, 3:01 PM CDT | Heat Advisory | FSD | 29 hr |
| Jul 23, 1:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 27, 9:39 AM CDT | River Flood Warning | FSD | 3 days |
| Jul 30, 3:33 PM CDT | Heat Advisory | FSD | 52 hr |
| Aug 11, 6:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Aug 11, 7:19 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 11, 9:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Aug 23, 12:05 AM CDT | Severe Thunderstorm Warning | FSD | 40 min |
| Aug 23, 3:43 AM CDT | Heat Advisory | FSD | 11 hr |
| Aug 28, 8:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 28, 10:41 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Aug 31, 6:02 AM CDT | Dense Fog Advisory | FSD | 4 hr |
| Sep 2, 2:33 AM CDT | Severe Thunderstorm Warning | FSD | 27 min |
| Sep 2, 2:56 AM CDT | Severe Thunderstorm Warning | FSD | 34 min |
| Sep 13, 3:12 PM CDT | Freeze Warning | FSD | 41 hr |
| Sep 19, 3:28 PM CDT | Wind Advisory | FSD | 34 hr |
| Oct 4, 3:13 PM CDT | Wind Advisory | FSD | 3 days |
| Nov 4, 3:37 AM CDT | Wind Advisory | FSD | 47 hr |
| Nov 15, 3:26 AM CST | Wind Advisory | FSD | 14 hr |
| Nov 19, 3:43 AM CST | Winter Weather Advisory | FSD | 14 hr |
| Nov 22, 10:28 PM CST | Dense Fog Advisory | FSD | 12 hr |
| Nov 25, 4:30 AM CST | Wind Advisory | FSD | 41 hr |
| Dec 2, 3:28 AM CST | Winter Weather Advisory | FSD | 45 hr |
| Dec 30, 3:15 PM CST | Wind Advisory | FSD | 57 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 archive20102012
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.