Alert archive / South Dakota / Mesoscale Discussions in 2005
Mesoscale Discussion 1929
The Storm Prediction Center issued this mesoscale discussion at Aug 3, 2005, 5:45 PM CDT for Lincoln County, Pipestone County, Minnesota; 29 counties in South Dakota. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Aug 3, 2005, 5:45 PM CDT (22:45 UTC)
- Expired
- Aug 3, 2005, 7:15 PM CDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 31 counties
Lincoln County, MN, Pipestone County, MN, Aurora County, SD, Beadle County, SD, Brookings County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Davison County, SD, Deuel County, SD, Douglas County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hutchinson County, SD, Jerauld County, SD, Jones County, SD, Kingsbury County, SD, Lake County, SD, Lyman County, SD, McCook County, SD, Mellette County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Todd County, SD, Tripp County, SD
The radar
The Sioux Falls radar (KFSD), 137 km from the middle of the area, began a volume at 22:47 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, 10.8 hours before the alert went out and 89 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
- 346 J/kg
- Mixed-layer CIN
- -423 J/kg
- Mixed-layer LCL
- 1753 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -74 m²/s²
- 0-3 km storm-relative helicity
- -45 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 |
|---|---|---|---|---|
| Aug 3, 1:58 AM CDT | Mesoscale Discussion | SPC | Aitkin, Becker, Big Stone, Cass, Crow Wing, Douglas and 12 more | 92 min |
| Aug 3, 1:29 PM CDT | Mesoscale Discussion | SPC | Cook, Itasca, Lake, Saint Louis | 2 hr |
| Aug 3, 3:16 PM CDT | Mesoscale Discussion | SPC | Houston | 89 min |
| Aug 3, 12:54 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brown, Brule, Buffalo, Campbell and 26 more | 3 hr |
| Aug 3, 3:05 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Brookings, Brown, Brule, Buffalo and 33 more | 7 hr |
Nearby
Mesoscale Discussions in South 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.