Alert archive / Nebraska / Sioux County
Weather alerts in Sioux County, Nebraska, 2009
120 weather alerts in 2009, 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 2009. Tap one for its archive.
- Alerts
- 120
- Warnings
- 48
- Watches
- 21
- Advisories
- 11
- Busiest month
- July46 alerts
- Busiest day
- July 3, 20099 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 |
|---|---|---|---|
| Mar 21, 5:23 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Mar 21, 6:26 PM MDT | Severe Thunderstorm Warning | CYS | 34 min |
| Apr 4, 4:57 AM MDT | Mesoscale Discussion | SPC | 4 hr |
| May 20, 3:55 PM MDT | Severe Thunderstorm Warning | CYS | 65 min |
| May 20, 4:21 PM MDT | Severe Thunderstorm Warning | CYS | 37 min |
| May 22, 6:29 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 24, 6:31 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jun 1, 5:14 PM MDT | Flash Flood Warning | CYS | 4 hr |
| Jun 5, 2:48 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 5, 5:37 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Jun 5, 10:01 PM MDT | Severe Thunderstorm Warning | CYS | 59 min |
| Jun 5, 11:00 PM MDT | Severe Thunderstorm Warning | CYS | 60 min |
| Jun 9, 4:12 PM MDT | Severe Thunderstorm Warning | CYS | 48 min |
| Jun 9, 4:29 PM MDT | Severe Thunderstorm Warning | CYS | 24 min |
| Jun 10, 12:52 PM MDT | Tornado Warning | CYS | 38 min |
| Jun 13, 1:56 PM MDT | Tornado Watch | SPC | 9 hr |
| Jun 13, 6:30 PM MDT | Severe Thunderstorm Warning | CYS | 45 min |
| Jun 13, 6:42 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Jun 14, 1:06 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jun 14, 1:50 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 17, 8:27 PM MDT | Severe Thunderstorm Warning | CYS | 48 min |
| Jun 18, 5:35 PM MDT | Severe Thunderstorm Warning | CYS | 40 min |
| Jun 22, 9:56 PM MDT | Severe Thunderstorm Warning | CYS | 49 min |
| Jun 22, 10:24 PM MDT | Severe Thunderstorm Warning | CYS | 37 min |
| Jun 23, 12:07 AM MDT | Mesoscale Discussion | SPC | 53 min |
| Jun 23, 1:28 AM MDT | Areal Flood Advisory | CYS | 3 hr |
| Jun 23, 2:18 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jun 23, 2:51 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 23, 5:26 PM MDT | Severe Thunderstorm Warning | CYS | 64 min |
| Jun 25, 1:30 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 4:22 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jun 25, 5:50 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Jun 26, 2:23 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jun 26, 2:38 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 30, 5:40 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Jun 30, 7:18 PM MDT | Severe Thunderstorm Warning | CYS | 42 min |
| Jul 1, 12:33 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Jul 1, 4:29 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jul 1, 6:22 PM MDT | Severe Thunderstorm Warning | CYS | 53 min |
| Jul 1, 6:38 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 1, 7:07 PM MDT | Severe Thunderstorm Warning | CYS | 53 min |
| Jul 1, 8:01 PM MDT | Severe Thunderstorm Warning | CYS | 59 min |
| Jul 2, 2:17 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jul 2, 5:02 PM MDT | Severe Thunderstorm Warning | CYS | 58 min |
| Jul 2, 6:01 PM MDT | Severe Thunderstorm Warning | CYS | 59 min |
| Jul 2, 6:29 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jul 2, 6:49 PM MDT | Severe Thunderstorm Warning | CYS | 56 min |
| Jul 2, 7:29 PM MDT | Severe Thunderstorm Warning | CYS | 46 min |
| Jul 2, 8:14 PM MDT | Severe Thunderstorm Warning | CYS | 38 min |
| Jul 2, 8:17 PM MDT | Flash Flood Warning | CYS | 3 hr |
| Jul 2, 8:27 PM MDT | Flash Flood Warning | CYS | 3 hr |
| Jul 2, 9:08 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jul 3, 2:19 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jul 6, 2:07 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 6, 5:35 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Jul 7, 7:17 PM MDT | Severe Thunderstorm Warning | CYS | 23 min |
| Jul 7, 9:05 PM MDT | Areal Flood Advisory | CYS | 4 hr |
| Jul 10, 5:20 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jul 10, 6:00 PM MDT | Severe Thunderstorm Warning | CYS | 43 min |
| Jul 10, 6:38 PM MDT | Severe Thunderstorm Warning | CYS | 41 min |
| Jul 10, 9:11 PM MDT | Severe Thunderstorm Warning | CYS | 49 min |
| Jul 11, 12:08 AM MDT | Severe Thunderstorm Warning | CYS | 49 min |
| Jul 11, 12:28 AM MDT | Mesoscale Discussion | SPC | 62 min |
| Jul 11, 3:35 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Jul 11, 3:56 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 11, 7:34 PM MDT | Severe Thunderstorm Warning | CYS | 56 min |
| Jul 11, 8:09 PM MDT | Flash Flood Warning | CYS | 3 hr |
| Jul 11, 8:10 PM MDT | Severe Thunderstorm Warning | CYS | 65 min |
| Jul 11, 8:26 PM MDT | Severe Thunderstorm Warning | CYS | 64 min |
| Jul 12, 2:05 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jul 13, 1:45 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 13, 4:06 PM MDT | Severe Thunderstorm Warning | CYS | 54 min |
| Jul 13, 6:45 PM MDT | Severe Thunderstorm Warning | CYS | 41 min |
| Jul 16, 5:47 PM MDT | Severe Thunderstorm Warning | CYS | 43 min |
| Jul 17, 12:59 PM MDT | Tornado Watch | SPC | 6 hr |
| Jul 19, 2:22 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 20, 2:07 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jul 20, 2:25 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 20, 5:01 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jul 27, 4:41 PM MDT | Severe Thunderstorm Warning | CYS | 35 min |
| Jul 27, 5:23 PM MDT | Severe Thunderstorm Warning | CYS | 52 min |
| Aug 3, 6:46 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Aug 3, 7:37 PM MDT | Severe Thunderstorm Warning | CYS | 52 min |
| Aug 4, 2:54 PM MDT | Mesoscale Discussion | SPC | 96 min |
| Aug 4, 3:37 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 4, 5:19 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Aug 4, 6:40 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Aug 4, 9:07 PM MDT | Severe Thunderstorm Warning | CYS | 53 min |
| Aug 5, 3:51 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Aug 6, 4:07 PM MDT | Tornado Watch | SPC | 4 hr |
| Aug 7, 5:37 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Aug 8, 2:18 AM MDT | Mesoscale Discussion | SPC | 117 min |
| Aug 8, 3:34 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Aug 8, 7:29 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 8, 9:41 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Aug 15, 1:07 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Aug 15, 2:08 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 15, 3:28 PM MDT | Severe Thunderstorm Warning | CYS | 50 min |
| Aug 15, 4:13 PM MDT | Severe Thunderstorm Warning | CYS | 62 min |
| Aug 18, 2:35 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Oct 9, 4:18 AM MDT | Winter Storm Watch | CYS | 10 hr |
| Oct 9, 2:27 PM MDT | Winter Weather Advisory | CYS | 19 hr |
| Oct 10, 2:26 PM MDT | Winter Weather Advisory | CYS | 28 hr |
| Oct 26, 4:30 PM MDT | Winter Storm Watch | CYS | 36 hr |
| Oct 27, 5:19 AM MDT | Winter Storm Warning | CYS | 66 hr |
| Oct 28, 12:13 PM MDT | Mesoscale Discussion | SPC | 6 hr |
| Oct 28, 9:56 PM MDT | Mesoscale Discussion | SPC | 4 hr |
| Oct 29, 9:30 PM MDT | Winter Weather Advisory | CYS | 21 hr |
| Dec 7, 2:04 AM MST | Winter Storm Watch | CYS | 12 hr |
| Dec 7, 1:45 PM MST | Winter Weather Advisory | CYS | 23 hr |
| Dec 8, 2:49 PM MST | Wind Chill Advisory | CYS | 20 hr |
| Dec 9, 2:44 PM MST | Wind Chill Advisory | CYS | 18 hr |
| Dec 21, 5:07 AM MST | Winter Storm Watch | CYS | 23 hr |
| Dec 22, 4:22 AM MST | Winter Storm Warning | CYS | 31 hr |
| Dec 22, 4:22 AM MST | Winter Weather Advisory | CYS | 46 hr |
| Dec 24, 1:34 PM MST | Wind Chill Advisory | CYS | 15 hr |
| Dec 24, 1:34 PM MST | Winter Storm Watch | CYS | 15 hr |
| Dec 24, 1:34 PM MST | Winter Weather Advisory | CYS | 51 hr |
| Dec 25, 4:22 AM MST | Winter Storm Warning | CYS | 37 hr |
| Dec 25, 1:13 PM MST | Blizzard Warning | CYS | 16 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 | 39 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 11 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 40 |
| Flooding | |
| Flash Flood Warning | 4 |
| Areal Flood Advisory | 2 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 5 |
| Winter Weather Advisory | 6 |
| Cold | |
| Wind Chill Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.