Alert archive / North Dakota / Sioux County
Weather alerts in Sioux County, North Dakota, 1987
5 weather alerts in 1987, 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 1987. Tap one for its archive.
- Alerts
- 5
- Warnings
- 5
- Watches
- 0
- Advisories
- 0
- Busiest month
- July4 alerts
- Busiest day
- July 20, 19874 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 |
|---|---|---|---|
| May 24, 12:58 AM CDT | Flash Flood Warning | BIS | 3 hr |
| Jul 19, 9:22 PM CDT | Tornado Warning | BIS | 38 min |
| Jul 19, 9:58 PM CDT | Tornado Warning | BIS | 32 min |
| Jul 19, 10:46 PM CDT | Severe Thunderstorm Warning | BIS | 59 min |
| Jul 19, 11:52 PM CDT | Severe Thunderstorm Warning | BIS | 68 min |
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 | 2 |
| Tornado Warning | 2 |
| Flooding | |
| Flash Flood Warning | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive19861988
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.