Alert archive / South Dakota / Mesoscale Discussions in 2008
Mesoscale Discussion 1952
The Storm Prediction Center issued this mesoscale discussion at Jul 28, 2008, 8:47 PM CDT for 34 counties in South Dakota. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Jul 28, 2008, 8:47 PM CDT (01:47 UTC)
- Expired
- Jul 28, 2008, 10:15 PM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
All 34 counties
Aurora County, SD, Beadle County, SD, Brule County, SD, Buffalo County, SD, Campbell County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Corson County, SD, Davison County, SD, Day County, SD, Dewey County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Jones County, SD, Kingsbury County, SD, Lake County, SD, Lyman County, SD, McCook County, SD, Miner County, SD, Potter County, SD, Sanborn County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 135 km from the middle of the area, began a volume at 01:51 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, 1.8 hours before the alert went out and 105 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
- 4093 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 826 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 360 m²/s²
- Significant tornado parameter
- 4.8
- Supercell composite
- 26.1
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 |
|---|---|---|---|---|
| Jul 28, 7:09 PM CDT | Mesoscale Discussion | SPC | Brown, Day, Grant, McPherson, Marshall, Roberts | 111 min |
| Jul 28, 7:09 PM CDT | Mesoscale Discussion | SPC | Brown, Day, Grant, McPherson, Marshall, Roberts | 2 hr |
| Jul 28, 10:15 PM CDT | Tornado Watch | SPC | Brown, Clark, Codington, Day, Deuel, Edmunds and 8 more | 4 hr |
| Jul 29, 12:36 AM CDT | Mesoscale Discussion | SPC | Brown, Codington, Day, Grant, Marshall, Roberts | 84 min |
Nearby
Mesoscale Discussions in South 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.