Alert archive / South Dakota / Mesoscale Discussions in 2007
Mesoscale Discussion 1091
The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2007, 11:19 PM CDT for 4 counties in Minnesota; Dickey County, Richland County, Sargent County, North Dakota; 8 counties in South Dakota. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Jun 10, 2007, 11:19 PM CDT (04:19 UTC)
- Expired
- Jun 11, 2007, 1:15 AM CDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
Counties Big Stone County, MN, Stevens County, MN, Traverse County, MN, Wilkin County, MN, Dickey County, ND, Richland County, ND, Sargent County, ND, Brown County, SD, Campbell County, SD, Day County, SD, Edmunds County, SD, Marshall County, SD, McPherson County, SD, Roberts County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 59 km from the middle of the area, began a volume at 04:18 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.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 4.3 hours before the alert went out and 109 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
- 94 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 2753 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 11:47 PM CDT | Severe Thunderstorm Watch | SPC | Big Stone, Chippewa, Douglas, Grant, Lac qui Parle, Otter Tail and 8 more | 6 hr |
| Jun 11, 2:53 AM CDT | Mesoscale Discussion | SPC | Becker, Douglas, Hubbard, Kandiyohi, Meeker, Otter Tail and 4 more | 67 min |
| Jun 11, 2:53 PM CDT | Mesoscale Discussion | SPC | Adams, Billings, Bowman, Burke, Burleigh, Dunn and 16 more | 2 hr |
| Jun 11, 3:26 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Billings, Bottineau, Bowman, Burke, Burleigh and 19 more | 8 hr |
| Jun 11, 5:53 PM CDT | Mesoscale Discussion | SPC | Adams, Billings, Bowman, Burke, Dunn, Grant and 12 more | 97 min |
| Jun 11, 3:47 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Campbell, Corson, Dewey, Haakon, Hughes and 10 more | 7 hr |
Nearby
Mesoscale Discussions in South Dakota, 2007Mesoscale Discussions in Minnesota, 2007Mesoscale Discussions in North Dakota, 2007Every mesoscale discussion in 2007
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.