Alert archive / South Dakota / Mesoscale Discussions in 2008
Mesoscale Discussion 2197
The Storm Prediction Center issued this mesoscale discussion at Sep 1, 2008, 2:18 PM CDT for 4 states. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Sep 1, 2008, 2:18 PM CDT (19:18 UTC)
- Expired
- Sep 1, 2008, 3:45 PM CDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
All 33 counties
Kittson County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Grand Forks County, ND, Griggs County, ND, LaMoure County, ND, Nelson County, ND, Pembina County, ND, Ransom County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Walsh County, ND, Keya Paha County, NE, Aurora County, SD, Beadle County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Clark County, SD, Day County, SD, Edmunds County, SD, Faulk County, SD, Gregory County, SD, Hand County, SD, Hyde County, SD, Jerauld County, SD, Lyman County, SD, Marshall County, SD, Spink County, SD, Tripp County, SD
The radar
The Aberdeen radar (KABR), 57 km from the middle of the area, began a volume at 19:19 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 12:00Z, 7.3 hours before the alert went out and 119 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
- 1020 J/kg
- Mixed-layer CIN
- -155 J/kg
- Mixed-layer LCL
- 961 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 357 m²/s²
- 0-3 km storm-relative helicity
- 331 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
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 |
|---|---|---|---|---|
| Sep 1, 4:36 PM CDT | Mesoscale Discussion | SPC | Arthur, Banner, Box Butte, Cherry, Cheyenne, Dawes and 12 more | 84 min |
| Sep 1, 6:16 PM CDT | Severe Thunderstorm Watch | SPC | Arthur, Blaine, Box Butte, Boyd, Brown, Cherry and 19 more | 5 hr |
Nearby
Mesoscale Discussions in South Dakota, 2008Mesoscale Discussions in North Dakota, 2008Mesoscale Discussions in Minnesota, 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.