Alert archive / South Dakota / Severe Thunderstorm Watches in 2020
Severe Thunderstorm Watch 264
The Storm Prediction Center issued this severe thunderstorm watch at Jun 6, 2020, 4:49 PM MDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 6, 2020, 4:49 PM MDT (22:49 UTC)
- Expired
- Jun 6, 2020, 11:06 PM MDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 70 kt
All 69 counties
Carter County, MT, Custer County, MT, Dawson County, MT, Fallon County, MT, Garfield County, MT, McCone County, MT, Powder River County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Rosebud County, MT, Valley County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Arthur County, NE, Blaine County, NE, Brown County, NE, Chase County, NE, Cherry County, NE, Deuel County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hooker County, NE, Keith County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Perkins County, NE, Sheridan County, NE, Thomas County, NE, Bennett County, SD, Brule County, SD, Butte County, SD, Campbell County, SD, Charles Mix County, SD, Corson County, SD, Custer County, SD, Dewey County, SD, Fall River County, SD, Gregory County, SD, Haakon County, SD, Harding County, SD, Hughes County, SD, Jackson County, SD, Jones County, SD, Lawrence County, SD, Lyman County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Potter 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), 201 km from the middle of the area, began a volume at 22:50 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
- 10%
- Ten or more severe wind reports
- 95%
- One or more gusts of 65 knots or more
- 70%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
32 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 5:09 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Custer, Fall River, Lawrence, Pennington | 66 min |
| Jun 6, 5:56 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Fall River, Lawrence, Meade, Oglala Lakota, Pennington | 49 min |
| Jun 6, 5:57 PM MDT | Severe Thunderstorm Warning | LBF | Deuel, Garden, Keith, Perkins, Sheridan | 48 min |
| Jun 6, 6:05 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 55 min |
| Jun 6, 6:09 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence, Meade | 36 min |
| Jun 6, 6:16 PM MDT | Severe Thunderstorm Warning | LBF | Cherry, Grant, Sheridan | 44 min |
| Jun 6, 6:40 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Harding, Lawrence, Meade, Perkins | 65 min |
| Jun 6, 6:42 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Haakon, Jackson, Lawrence, Meade, Pennington | 63 min |
| Jun 6, 6:43 PM MDT | Severe Thunderstorm Warning | LBF | Arthur, Deuel, Garden, Grant, Keith | 47 min |
| Jun 6, 6:45 PM MDT | Severe Thunderstorm Warning | UNR | Bennett, Custer, Fall River, Jackson, Oglala Lakota, Pennington | 60 min |
| Jun 6, 7:01 PM MDT | Severe Thunderstorm Warning | LBF | Cherry, Grant, Sheridan | 44 min |
| Jun 6, 7:19 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 26 min |
| Jun 6, 7:28 PM MDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Mellette, Oglala Lakota, Pennington, Todd | 62 min |
| Jun 6, 7:40 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Bowman, Hettinger, Slope | 65 min |
| Jun 6, 7:43 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Harding, Meade, Perkins, Ziebach | 62 min |
| Jun 6, 7:46 PM MDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Pennington, Ziebach | 59 min |
| Jun 6, 8:21 PM MDT | Severe Thunderstorm Warning | ABR | Jones, Lyman, Stanley | 39 min |
| Jun 6, 8:24 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 51 min |
| Jun 6, 8:26 PM MDT | Severe Thunderstorm Warning | UNR | Jackson, Mellette, Todd | 64 min |
| Jun 6, 8:35 PM MDT | Severe Thunderstorm Warning | BIS | Grant, Sioux | 55 min |
| Jun 6, 8:36 PM MDT | Severe Thunderstorm Warning | ABR | Dewey, Stanley, Sully | 39 min |
| Jun 6, 8:40 PM MDT | Severe Thunderstorm Warning | UNR | Haakon, Ziebach | 36 min |
| Jun 6, 8:43 PM MDT | Severe Thunderstorm Warning | UNR | Perkins, Ziebach | 47 min |
| Jun 6, 8:47 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger, Slope, Stark | 58 min |
| Jun 6, 8:59 PM MDT | Severe Thunderstorm Warning | LBF | Brown, Cherry, Keya Paha | 46 min |
| Jun 6, 8:59 PM MDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Hyde, Jones, Lyman, Potter and 2 more | 46 min |
| Jun 6, 9:04 PM MDT | Severe Thunderstorm Warning | UNR | Mellette, Todd, Tripp | 56 min |
| Jun 6, 9:12 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 48 min |
| Jun 6, 9:24 PM MDT | Severe Thunderstorm Warning | BIS | Grant, Morton, Sioux | 51 min |
| Jun 6, 9:46 PM MDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix, Douglas, Gregory, Jerauld | 59 min |
| Jun 6, 9:47 PM MDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hughes, Hyde, Lyman | 39 min |
| Jun 6, 9:52 PM MDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk, Hand, Hughes, Hyde, McPherson and 3 more | 35 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 5, 7:01 PM MDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Dawes, Morrill, Scotts Bluff and 2 more | 119 min |
| Jun 6, 1:23 PM MDT | Severe Thunderstorm Watch | SPC | Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more | 7 hr |
| Jun 6, 2:33 PM MDT | Mesoscale Discussion | SPC | Arthur, Box Butte, Cherry, Cheyenne, Dawes, Deuel and 12 more | 117 min |
| Jun 6, 5:25 PM MDT | Mesoscale Discussion | SPC | Box Butte, Dawes, Morrill, Scotts Bluff, Sheridan, Sioux | 95 min |
| Jun 5, 6:24 PM MDT | Mesoscale Discussion | SPC | Uinta | 96 min |
| Jun 6, 9:48 AM MDT | Severe Thunderstorm Watch | SPC | Uinta | 6 hr |
| Jun 6, 12:27 PM MDT | Mesoscale Discussion | SPC | Albany, Campbell, Carbon, Converse, Crook, Goshen and 7 more | 93 min |
Nearby
Severe Thunderstorm Watches in South Dakota, 2020Severe Thunderstorm Watches in Nebraska, 2020Severe Thunderstorm Watches in Montana, 2020Every severe thunderstorm watch in 2020
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.