Alert archive / South Dakota / Mesoscale Discussions in 2020
Mesoscale Discussion 875
The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2020, 5:00 PM MDT for Cherry County, Sheridan County, Nebraska; 21 counties in South Dakota. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Jun 7, 2020, 5:00 PM MDT (23:00 UTC)
- Expired
- Jun 7, 2020, 6:30 PM MDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 268
All 23 counties
Cherry County, NE, Sheridan County, NE, Bennett County, SD, Brown County, SD, Buffalo County, SD, Campbell County, SD, Edmunds County, SD, Faulk County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jones County, SD, Lyman County, SD, Marshall County, SD, McPherson County, SD, Mellette County, SD, Potter County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Walworth County, SD
The radar
The North Platte radar (KLNX), 183 km from the middle of the area, began a volume at 23:01 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, 11.0 hours before the alert went out and 230 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
- 1690 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 1215 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 539 m²/s²
- 0-3 km storm-relative helicity
- 503 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 17.5
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 7, 1:04 PM MDT | Mesoscale Discussion | SPC | Blaine, Boyd, Brown, Keya Paha, Logan, Rock and 1 more | 116 min |
| Jun 7, 2:31 PM MDT | Severe Thunderstorm Watch | SPC | Brown, Cherry, Grant, Hooker, Keya Paha, Sheridan and 1 more | 8 hr |
| Jun 6, 7:29 PM MDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brown, Brule, Buffalo, Campbell and 26 more | 91 min |
| Jun 6, 8:11 PM MDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Brown, Buffalo, Clark, Codington and 13 more | 6 hr |
| Jun 6, 10:34 PM MDT | Mesoscale Discussion | SPC | Beadle, Brule, Buffalo, Campbell, Edmunds, Faulk and 5 more | 86 min |
| Jun 7, 2:59 PM MDT | Mesoscale Discussion | SPC | Harding | 2 hr |
Nearby
Mesoscale Discussions in South 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.