Alert archive / South Dakota / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 433
The Storm Prediction Center issued this severe thunderstorm watch at Jul 22, 2013, 5:30 PM MDT for 8 counties in South Dakota; Crook County, Weston County, Wyoming. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 22, 2013, 5:30 PM MDT (23:30 UTC)
- Expired
- Jul 23, 2013, 12:00 AM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Butte County, SD, Custer County, SD, Fall River County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD, Perkins County, SD, Crook County, WY, Weston County, WY
The radar
The Rapid City radar (KUDX), 124 km from the middle of the area, began a volume at 23:32 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
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 5:40 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Harding | 50 min |
| Jul 22, 5:48 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 27 min |
| Jul 22, 5:51 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 39 min |
| Jul 22, 6:09 PM MDT | Severe Thunderstorm Warning | UNR | Lawrence, Pennington | 51 min |
| Jul 22, 6:23 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 52 min |
| Jul 22, 6:56 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 64 min |
| Jul 22, 7:16 PM MDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 59 min |
| Jul 22, 7:37 PM MDT | Severe Thunderstorm Warning | UNR | Lawrence, Pennington | 38 min |
| Jul 22, 7:53 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 67 min |
| Jul 22, 8:09 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 66 min |
| Jul 22, 8:40 PM MDT | Severe Thunderstorm Warning | UNR | Fall River | 35 min |
| Jul 22, 8:55 PM MDT | Severe Thunderstorm Warning | UNR | 35 min | |
| Jul 22, 9:27 PM MDT | Severe Thunderstorm Warning | UNR | 33 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 22, 4:12 PM MDT | Mesoscale Discussion | SPC | Carter, Powder River | 93 min |
| Jul 22, 12:08 PM MDT | Mesoscale Discussion | SPC | Union | 97 min |
Nearby
Severe Thunderstorm Watches in South Dakota, 2013Severe Thunderstorm Watches in Wyoming, 2013Every severe thunderstorm watch in 2013
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.