Alert archive / South Dakota / Severe Thunderstorm Watches in 2018
Severe Thunderstorm Watch 243
The Storm Prediction Center issued this severe thunderstorm watch at Jun 29, 2018, 5:19 PM MDT for 15 counties in Nebraska; 24 counties in South Dakota. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 29, 2018, 5:19 PM MDT (23:19 UTC)
- Expired
- Jun 30, 2018, 1:00 AM MDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 39 counties
Arthur County, NE, Banner County, NE, Box Butte County, NE, Cherry County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Garden County, NE, Grant County, NE, Hooker County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Bennett County, SD, Buffalo County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Haakon County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jackson County, SD, Jones County, SD, Lyman County, SD, McPherson County, SD, Mellette County, SD, Potter County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Walworth County, SD, Ziebach County, SD
The radar
The Rapid City radar (KUDX), 151 km from the middle of the area, began a volume at 23:21 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
- 20%
- 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
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
21 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 5:44 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 18 min |
| Jun 29, 6:12 PM MDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Pennington, Ziebach | 63 min |
| Jun 29, 6:21 PM MDT | Severe Thunderstorm Warning | UNR | Meade, Ziebach | 54 min |
| Jun 29, 6:36 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte | 54 min |
| Jun 29, 6:52 PM MDT | Severe Thunderstorm Warning | UNR | Haakon | 53 min |
| Jun 29, 6:58 PM MDT | Severe Thunderstorm Warning | UNR | Haakon, Ziebach | 47 min |
| Jun 29, 7:05 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 40 min |
| Jun 29, 7:15 PM MDT | Tornado Warning | CYS | Dawes, Sioux | 45 min |
| Jun 29, 7:17 PM MDT | Severe Thunderstorm Warning | ABR | Dewey, Stanley | 43 min |
| Jun 29, 7:26 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes | 49 min |
| Jun 29, 7:31 PM MDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 44 min |
| Jun 29, 7:32 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill | 58 min |
| Jun 29, 7:41 PM MDT | Severe Thunderstorm Warning | LBF | Sheridan | 49 min |
| Jun 29, 7:50 PM MDT | Severe Thunderstorm Warning | CYS | Dawes, Sioux | 40 min |
| Jun 29, 7:52 PM MDT | Severe Thunderstorm Warning | ABR | Dewey, Hughes, Potter, Stanley, Sully | 53 min |
| Jun 29, 8:06 PM MDT | Severe Thunderstorm Warning | LBF | Garden, Sheridan | 24 min |
| Jun 29, 8:23 PM MDT | Severe Thunderstorm Warning | ABR | Hughes, Potter, Sully | 37 min |
| Jun 29, 8:25 PM MDT | Severe Thunderstorm Warning | LBF | Sheridan | 33 min |
| Jun 29, 8:57 PM MDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Hughes, Hyde, Potter, Sully | 48 min |
| Jun 29, 9:37 PM MDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Spink | 38 min |
| Jun 29, 11:30 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 19 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 |
|---|---|---|---|---|
| Jun 29, 4:31 PM MDT | Mesoscale Discussion | SPC | Banner, Box Butte, Dawes, Garden, Kimball, Morrill and 3 more | 89 min |
| Jun 28, 8:06 PM MDT | Mesoscale Discussion | SPC | Campbell, Corson, Harding, McPherson, Perkins | 84 min |
| Jun 28, 9:54 PM MDT | Severe Thunderstorm Watch | SPC | Campbell, Corson | 9 hr |
| Jun 29, 1:02 AM MDT | Mesoscale Discussion | SPC | Campbell, Corson, McPherson | 118 min |
| Jun 29, 1:06 PM MDT | Severe Thunderstorm Watch | SPC | Butte, Custer, Fall River, Harding, Lawrence, Meade and 3 more | 9 hr |
| Jun 29, 2:29 PM MDT | Mesoscale Discussion | SPC | Butte, Custer, Fall River, Harding, Lawrence, Meade and 4 more | 91 min |
| Jun 29, 4:57 PM MDT | Mesoscale Discussion | SPC | Bennett, Campbell, Corson, Dewey, Haakon, Jackson and 8 more | 63 min |
Nearby
Severe Thunderstorm Watches in South Dakota, 2018Severe Thunderstorm Watches in Nebraska, 2018Every severe thunderstorm watch in 2018
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.