Alert archive / South Dakota / Mesoscale Discussions in 2003
Mesoscale Discussion 2379
The Storm Prediction Center issued this mesoscale discussion at Sep 17, 2003, 3:50 PM CDT for 30 counties in Minnesota; 13 counties in North Dakota; 34 counties in South Dakota. It was in force for 55 min.
The area
The outline as issued.
The facts
- Issued
- Sep 17, 2003, 3:50 PM CDT (20:50 UTC)
- Expired
- Sep 17, 2003, 4:45 PM CDT
- In force
- 55 min
- Issued by
- the Storm Prediction Center
All 77 counties
Becker County, MN, Beltrami County, MN, Big Stone County, MN, Chippewa County, MN, Clay County, MN, Clearwater County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Kittson County, MN, Koochiching County, MN, Lac qui Parle County, MN, Lake of the Woods County, MN, Lincoln County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Pipestone County, MN, Polk County, MN, Pope County, MN, Red Lake County, MN, Roseau County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Yellow Medicine County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Grand Forks County, ND, Griggs County, ND, LaMoure County, ND, Pembina County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Traill County, ND, Walsh County, ND, Aurora County, SD, Beadle County, SD, Bon Homme 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, Deuel County, SD, Douglas County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Hand 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, Miner County, SD, Minnehaha County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Turner County, SD, Yankton County, SD
The radar
The Aberdeen radar (KABR), 107 km from the middle of the area, began a volume at 20:51 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 nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 8.8 hours before the alert went out and 146 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
- 1710 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 832 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.8
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 17, 12:15 AM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Clay, Clearwater, Koochiching, Mahnomen and 5 more | 105 min |
| Sep 17, 12:49 PM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Big Stone, Chippewa, Clay, Clearwater and 21 more | 86 min |
| Sep 17, 1:10 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Beltrami, Clay, Clearwater, Douglas, Grant and 12 more | 6 hr |
| Sep 17, 6:00 PM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Clay, Clearwater, Hubbard, Kittson and 10 more | 60 min |
Nearby
Mesoscale Discussions in South Dakota, 2003Mesoscale Discussions in Minnesota, 2003Mesoscale Discussions in North Dakota, 2003Every mesoscale discussion in 2003
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.