Alert archive / South Dakota / Mesoscale Discussions in 2020
Mesoscale Discussion 996
The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2020, 1:16 PM CDT for 9 counties in Nebraska; 13 counties in North Dakota; 26 counties in South Dakota. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Jun 25, 2020, 1:16 PM CDT (18:16 UTC)
- Expired
- Jun 25, 2020, 3:15 PM CDT
- In force
- 119 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 60%
All 48 counties
Barnes County, ND, Dickey County, ND, Eddy County, ND, Foster County, ND, Griggs County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Nelson County, ND, Ransom County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Blaine County, NE, Boyd County, NE, Brown County, NE, Cherry County, NE, Holt County, NE, Keya Paha County, NE, Loup County, NE, Rock County, NE, Thomas County, NE, Aurora County, SD, Beadle County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Davison County, SD, Day County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Gregory County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jerauld County, SD, Lyman County, SD, Marshall County, SD, McPherson County, SD, Potter County, SD, Sanborn County, SD, Spink County, SD, Sully County, SD, Todd County, SD, Tripp County, SD
The radar
The Aberdeen radar (KABR), 134 km from the middle of the area, began a volume at 18:17 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, 6.3 hours before the alert went out and 99 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
- 1948 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jun 25, 3:30 PM CDT | Severe Thunderstorm Watch | SPC | Arthur, Blaine, Boyd, Brown, Chase, Cherry and 20 more | 8 hr |
| Jun 25, 1:41 PM CDT | Severe Thunderstorm Watch | SPC | Barnes, Cass, Dickey, Foster, Grand Forks, Griggs and 8 more | 5 hr |
| Jun 25, 3:31 PM CDT | Mesoscale Discussion | SPC | Barnes, Cass, Foster, Griggs, LaMoure, Ransom and 5 more | 119 min |
Nearby
Mesoscale Discussions in South Dakota, 2020Mesoscale Discussions in North Dakota, 2020Mesoscale Discussions in Nebraska, 2020Every mesoscale discussion in 2020
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.