Alert archive / North Dakota / Sioux County / 2011
Weather alerts in Sioux County, North Dakota, May 2011
8 weather alerts in May 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 8
- Warnings
- 2
- Watches
- 1
- Advisories
- 2
- Busiest day
- May 10, 20113 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|
| May 8, 5:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| May 8, 6:13 PM CDT | Tornado Watch | SPC | 6 hr |
| May 8, 8:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| May 9, 10:15 PM CDT | Areal Flood Advisory | BIS | 15 hr |
| May 10, 1:43 AM CDT | Severe Thunderstorm Warning | BIS | 62 min |
| May 10, 1:56 AM CDT | Mesoscale Discussion | SPC | 94 min |
| May 20, 10:45 AM CDT | Areal Flood Advisory | BIS | 48 hr |
| May 24, 11:39 AM CDT | Areal Flood Warning | BIS | 20 days |
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 | 1 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 3 |
| Flooding | |
| Areal Flood Warning | 1 |
| Areal Flood Advisory | 2 |
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. Warning verification from the Mesonet's Cow. Rebuilt daily.