Alert archive / South Dakota / Mesoscale Discussions in 2004
Mesoscale Discussion 1597
The Storm Prediction Center issued this mesoscale discussion at Jul 10, 2004, 3:35 PM CDT for 32 counties in South Dakota. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Jul 10, 2004, 3:35 PM CDT (20:35 UTC)
- Expired
- Jul 10, 2004, 5:00 PM CDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
All 32 counties
Aurora County, SD, Beadle County, SD, Brookings County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lyman County, SD, Marshall County, SD, McCook County, SD, McPherson County, SD, Miner County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD
The radar
The Aberdeen radar (KABR), 109 km from the middle of the area, began a volume at 20:39 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, 8.6 hours before the alert went out and 48 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
- 1097 J/kg
- Mixed-layer CIN
- -195 J/kg
- Mixed-layer LCL
- 837 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 247 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.7
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 9, 7:29 PM CDT | Mesoscale Discussion | SPC | Butte, Corson, Dewey, Haakon, Harding, Meade and 3 more | 2 hr |
| Jul 10, 12:02 PM CDT | Mesoscale Discussion | SPC | Bennett, Corson, Dewey, Haakon, Jackson, Oglala Lakota and 6 more | 118 min |
| Jul 10, 12:25 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Corson, Dewey, Haakon, Jackson, Jones and 10 more | 7 hr |
| Jul 10, 3:39 PM CDT | Mesoscale Discussion | SPC | Harding | 2 hr |
| Jul 10, 3:56 PM CDT | Mesoscale Discussion | SPC | Harding | 2 hr |
| Jul 10, 5:10 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brown, Brule, Buffalo, Clark and 18 more | 2 hr |
| Jul 10, 5:25 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Brookings, Brown, Brule, Buffalo and 30 more | 7 hr |
Nearby
Mesoscale Discussions in South Dakota, 2004Every mesoscale discussion in 2004
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.