Alert archive / South Dakota / Mesoscale Discussions in 2020

Mesoscale Discussion 863

June 6, 20209 counties in North Dakota; 11 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2020, 11:34 PM CDT for 9 counties in North Dakota; 11 counties in South Dakota. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Jun 6, 2020, 11:34 PM CDT (04:34 UTC)
Expired: Jun 7, 2020, 1:00 AM CDT
In force: 86 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 265

Counties Burleigh County, ND, Dickey County, ND, Emmons County, ND, Kidder County, ND, Logan County, ND, McIntosh County, ND, McLean County, ND, Oliver County, ND, Sheridan County, ND, Beadle County, SD, Brule County, SD, Buffalo County, SD, Campbell County, SD, Edmunds County, SD, Faulk County, SD, Hand County, SD, Hyde County, SD, Jerauld County, SD, McPherson County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 111 km from the middle of the area, began a volume at 04:36 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, 4.6 hours before the alert went out and 135 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2158 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 516 m²/s²
0-3 km storm-relative helicity: 783 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 6, 8:29 PM CDT	Mesoscale Discussion	SPC	Benson, Billings, Burke, Burleigh, Dickey, Dunn and 25 more	91 min
Jun 6, 9:11 PM CDT	Severe Thunderstorm Watch	SPC	Barnes, Benson, Bottineau, Burke, Burleigh, Dickey and 31 more	6 hr
Jun 7, 2:18 AM CDT	Mesoscale Discussion	SPC	Grand Forks, Pembina, Walsh	117 min
Jun 7, 1:39 PM CDT	Mesoscale Discussion	SPC	Barnes, Cass, Grand Forks, Pembina, Ransom, Richland and 4 more	3 hr
Jun 7, 3:06 PM CDT	Tornado Watch	SPC	Barnes, Benson, Cass, Cavalier, Dickey, Eddy and 19 more	7 hr
Jun 7, 3:59 PM CDT	Mesoscale Discussion	SPC	Billings, Bowman, Burke, Divide, Dunn, Golden Valley and 9 more	2 hr
Jun 7, 5:55 PM CDT	Mesoscale Discussion	SPC	Barnes, Cass, Dickey, Eddy, Foster, Grand Forks and 11 more	2 hr
Jun 7, 2:04 PM CDT	Mesoscale Discussion	SPC	Aurora, Beadle, Brown, Brule, Buffalo, Campbell and 25 more	116 min
Jun 7, 3:31 PM CDT	Severe Thunderstorm Watch	SPC	Beadle, Bennett, Brown, Brule, Buffalo, Campbell and 21 more	8 hr
Jun 7, 6:00 PM CDT	Mesoscale Discussion	SPC	Bennett, Brown, Buffalo, Campbell, Edmunds, Faulk and 15 more	90 min

Nearby

Mesoscale Discussions in South Dakota, 2020 Mesoscale Discussions in North Dakota, 2020 Every 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.