Alert archive / South Dakota / Mesoscale Discussions in 2005
Mesoscale Discussion 776
The Storm Prediction Center issued this mesoscale discussion at May 8, 2005, 1:10 PM CDT for 5 states. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- May 8, 2005, 1:10 PM CDT (18:10 UTC)
- Expired
- May 8, 2005, 3:45 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 69 counties
Lyon County, IA, Sioux County, IA, Big Stone County, MN, Clay County, MN, Douglas County, MN, Grant County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Pipestone County, MN, Rock County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Wilkin County, MN, Yellow Medicine County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Emmons County, ND, Foster County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Cedar County, NE, Knox County, NE, Pierce County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brown County, SD, Clark County, SD, Clay County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, Marshall County, SD, McCook County, SD, McPherson County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Aberdeen radar (KABR), 89 km from the middle of the area, began a volume at 18:14 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, 6.2 hours before the alert went out and 45 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
- 1864 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| May 7, 7:34 PM CDT | Mesoscale Discussion | SPC | Cherokee, Ida, Lyon, Monona, O'Brien, Osceola and 3 more | 116 min |
| May 7, 7:55 PM CDT | Severe Thunderstorm Watch | SPC | Lyon, Plymouth, Sioux | 6 hr |
| May 7, 11:07 PM CDT | Mesoscale Discussion | SPC | Dickinson, Lyon, O'Brien, Osceola, Plymouth, Sioux | 83 min |
| May 8, 1:50 PM CDT | Tornado Watch | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more | 7 hr |
| May 8, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | Audubon, Carroll, Crawford, Fremont, Harrison, Mills and 5 more | 7 hr |
| May 8, 3:05 PM CDT | Mesoscale Discussion | SPC | Black Hawk, Boone, Bremer, Butler, Calhoun, Cerro Gordo and 28 more | 85 min |
| May 8, 5:27 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Crawford, Dickinson, Emmet and 12 more | 63 min |
| May 8, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Emmet, Franklin, Hamilton, Hancock, Hardin and 7 more | 8 hr |
| May 8, 3:50 PM CDT | Tornado Watch | SPC | Becker, Beltrami, Clearwater, Kittson, Lake of the Woods, Mahnomen and 6 more | 5 hr |
| May 7, 8:36 PM CDT | Mesoscale Discussion | SPC | Adams, Antelope, Boone, Buffalo, Butler, Cedar and 26 more | 114 min |
| May 8, 2:11 PM CDT | Mesoscale Discussion | SPC | Butler, Cass, Colfax, Dodge, Douglas, Gage and 11 more | 64 min |
| May 8, 6:02 PM CDT | Mesoscale Discussion | SPC | Pawnee | 118 min |
| May 7, 9:37 PM CDT | Mesoscale Discussion | SPC | Barnes, Benson, Burleigh, Cass, Eddy, Foster and 13 more | 53 min |
Nearby
Mesoscale Discussions in South Dakota, 2005Mesoscale Discussions in North Dakota, 2005Mesoscale Discussions in Minnesota, 2005Every mesoscale discussion in 2005
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.