Alert archive / South Dakota / Mesoscale Discussions in 2008
Mesoscale Discussion 1883
The Storm Prediction Center issued this mesoscale discussion at Jul 23, 2008, 6:24 PM CDT for 9 counties in North Dakota; 17 counties in South Dakota. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 23, 2008, 6:24 PM CDT (23:24 UTC)
- Expired
- Jul 23, 2008, 8:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 26 counties
Burleigh County, ND, Dickey County, ND, Emmons County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Sioux County, ND, Stutsman County, ND, Beadle County, SD, Brown County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, McPherson County, SD, Potter County, SD, Sanborn County, SD, Spink County, SD, Sully County, SD, Walworth County, SD, Ziebach County, SD
The radar
The Bismarck radar (KBIS), 106 km from the middle of the area, began a volume at 23:24 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
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.4 hours before the alert went out and 104 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
- 173 J/kg
- Mixed-layer CIN
- -313 J/kg
- Mixed-layer LCL
- 857 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 303 m²/s²
- 0-3 km storm-relative helicity
- 370 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.6
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 |
|---|---|---|---|---|
| Jul 22, 9:03 PM CDT | Mesoscale Discussion | SPC | Golden Valley | 87 min |
| Jul 23, 2:03 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Billings, Bottineau, Bowman, Burke, Divide and 13 more | 7 hr |
| Jul 23, 2:22 PM CDT | Mesoscale Discussion | SPC | Adams, Billings, Bowman, Burke, Divide, Dunn and 11 more | 113 min |
| Jul 23, 6:51 PM CDT | Severe Thunderstorm Watch | SPC | Burleigh, Dickey, Emmons, Foster, Kidder, LaMoure and 6 more | 4 hr |
Nearby
Mesoscale Discussions in South Dakota, 2008Mesoscale Discussions in North Dakota, 2008Every mesoscale discussion 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.