Alert archive / South Dakota / Severe Thunderstorm Watches in 2006
Severe Thunderstorm Watch 641
The Storm Prediction Center issued this severe thunderstorm watch at Jul 24, 2006, 6:39 PM CDT for 4 states. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 24, 2006, 6:39 PM CDT (23:39 UTC)
- Expired
- Jul 24, 2006, 10:47 PM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 41 counties
Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Emmet County, IA, Ida County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Sioux County, IA, Woodbury County, IA, Cottonwood County, MN, Jackson County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Rock County, MN, Cedar County, NE, Dakota County, NE, Dixon County, NE, Knox County, NE, Bon Homme County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Hanson County, SD, Hutchinson County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 25 km from the middle of the area, began a volume at 23:42 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 6:42 PM CDT | Severe Thunderstorm Warning | FSD | McCook | 33 min |
| Jul 24, 7:11 PM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha, Turner | 34 min |
| Jul 24, 7:34 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 26 min |
| Jul 24, 7:53 PM CDT | Severe Thunderstorm Warning | FSD | Lake | 37 min |
| Jul 24, 9:38 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson | 24 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 12:49 PM CDT | Mesoscale Discussion | SPC | Dickinson, Emmet, Osceola | 86 min |
| Jul 24, 3:04 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cerro Gordo, Cherokee, Clay, Dickinson, Emmet and 14 more | 116 min |
| Jul 24, 6:20 PM CDT | Mesoscale Discussion | SPC | Cherokee, Clay, Dickinson, Emmet, Lyon, O'Brien and 4 more | 85 min |
| Jul 23, 7:53 PM CDT | Mesoscale Discussion | SPC | Beltrami, Cook, Itasca, Kittson, Koochiching, Lake and 4 more | 97 min |
| Jul 24, 1:08 PM CDT | Severe Thunderstorm Watch | SPC | Dodge, Fillmore, Goodhue, Houston, Mower, Olmsted and 2 more | 8 hr |
| Jul 24, 3:29 PM CDT | Mesoscale Discussion | SPC | Dodge, Fillmore, Goodhue, Houston, Mower, Olmsted and 3 more | 2 hr |
| Jul 24, 6:42 PM CDT | Mesoscale Discussion | SPC | Goodhue, Houston, Olmsted, Wabasha, Washington, Winona | 63 min |
Nearby
Severe Thunderstorm Watches in South Dakota, 2006Severe Thunderstorm Watches in Iowa, 2006Severe Thunderstorm Watches in Minnesota, 2006Every severe thunderstorm watch in 2006
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.