Alert archive / South Dakota / Mesoscale Discussions in 2026
Mesoscale Discussion 2239
The Storm Prediction Center issued this mesoscale discussion at Sep 5, 2026, 12:48 AM CDT for 5 states. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- Sep 5, 2026, 12:48 AM CDT (05:48 UTC)
- Expired
- Sep 5, 2026, 2:45 AM CDT
- In force
- 117 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch unlikely
- Chance of a watch
- 20%
All 59 counties
Lyon County, IA, Lincoln County, MN, Pipestone County, MN, Rock County, MN, Barnes County, ND, Burleigh 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, Stutsman County, ND, Wells County, ND, Knox County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Campbell County, SD, Charles Mix County, SD, Clark 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, Hand County, SD, Hanson County, SD, Hutchinson County, SD, Hyde 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, Walworth County, SD, Yankton County, SD
The radar
The Aberdeen radar (KABR), 41 km from the middle of the area, began a volume at 05:50 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 00:00Z, 5.8 hours before the alert went out and 39 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
- 1325 J/kg
- Mixed-layer CIN
- -301 J/kg
- Mixed-layer LCL
- 2105 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 199 m²/s²
- 0-3 km storm-relative helicity
- 204 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 3:34 PM CDT | Mesoscale Discussion | SPC | Arthur, Blaine, Box Butte, Brown, Chase, Cherry and 19 more | 116 min |
| Sep 5, 6:01 PM CDT | Severe Thunderstorm Watch | SPC | Box Butte, Cheyenne, Deuel, Garden, Keith, Kimball and 3 more | 4 hr |
Nearby
Mesoscale Discussions in South Dakota, 2026Mesoscale Discussions in North Dakota, 2026Mesoscale Discussions in Minnesota, 2026Every mesoscale discussion in 2026
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.