Alert archive / South Dakota / Tornado Watches in 2008
Tornado Watch 506
The Storm Prediction Center issued this tornado watch at Jun 10, 2008, 8:06 PM CDT for 18 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 10, 2008, 8:06 PM CDT (01:06 UTC)
- Expired
- Jun 11, 2008, 1:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
Counties Buffalo County, SD, Butte County, SD, Dewey County, SD, Haakon County, SD, Hughes County, SD, Hyde County, SD, Jackson County, SD, Jones County, SD, Lawrence County, SD, Lyman County, SD, Meade County, SD, Mellette County, SD, Pennington County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Ziebach County, SD
The radar
The Rapid City radar (KUDX), 53 km from the middle of the area, began a volume at 01:07 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- 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
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 8:29 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade, Pennington | 61 min |
| Jun 10, 8:59 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 61 min |
| Jun 10, 9:41 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 42 min |
| Jun 10, 10:02 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 58 min |
| Jun 11, 12:26 AM CDT | Severe Thunderstorm Warning | UNR | Perkins, Ziebach | 36 min |
| Jun 11, 12:59 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Dewey, McPherson, Walworth | 61 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 1.1 hours before the alert went out and 297 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1100 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 10:51 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brookings, Brown, Brule, Buffalo and 35 more | 54 min |
| Jun 11, 12:39 AM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brown, Brule, Buffalo, Charles Mix and 32 more | 36 min |
| Jun 11, 12:55 AM CDT | Severe Thunderstorm Watch | SPC | Beadle, Brookings, Brown, Buffalo, Campbell, Clark and 29 more | 7 hr |
| Jun 11, 3:19 AM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brookings, Brown, Brule, Buffalo and 42 more | 116 min |
| Jun 11, 6:23 AM CDT | Mesoscale Discussion | SPC | Beadle, Brookings, Clark, Codington, Day, Deuel and 12 more | 2 hr |
| Jun 11, 2:03 PM CDT | Mesoscale Discussion | SPC | Clay, Lincoln, Union | 117 min |
| Jun 11, 2:52 PM CDT | Tornado Watch | SPC | Lincoln, Union | 7 hr |
Nearby
Tornado Watches in South Dakota, 2008Every tornado watch in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.