Alert archive / South Dakota / Mesoscale Discussions in 2022

Mesoscale Discussion 1239

June 20, 2022Lac qui Parle County, Lincoln County, Minnesota; 9 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2022, 5:59 PM CDT for Lac qui Parle County, Lincoln County, Minnesota; 9 counties in South Dakota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 20, 2022, 5:59 PM CDT (22:59 UTC)
Expired: Jun 20, 2022, 8:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

Counties Lac qui Parle County, MN, Lincoln County, MN, Bon Homme County, SD, Brookings County, SD, Deuel County, SD, Hanson County, SD, Hutchinson County, SD, Lake County, SD, McCook County, SD, Miner County, SD, Moody County, SD

The radar

The Sioux Falls radar (KFSD), 59 km from the middle of the area, began a volume at 23:03 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.

Severe Thunderstorm Watch 398Jun 20, 9:10 PM CDT

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.0 hours before the alert went out and 139 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: 951 J/kg
Mixed-layer CIN: -294 J/kg
Mixed-layer LCL: 1557 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 174 m²/s²
0-3 km storm-relative helicity: 144 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 19, 10:12 PM CDT	Mesoscale Discussion	SPC	Kittson, Marshall, Roseau	3 hr
Jun 20, 1:49 PM CDT	Mesoscale Discussion	SPC	Becker, Clay, Clearwater, Mahnomen, Marshall, Norman and 5 more	2 hr
Jun 20, 3:19 PM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Clay, Clearwater, Grant, Hubbard and 11 more	7 hr
Jun 20, 3:36 PM CDT	Severe Thunderstorm Watch	SPC	Big Stone, Traverse	8 hr
Jun 20, 5:01 PM CDT	Mesoscale Discussion	SPC	Beltrami, Clearwater, Hubbard, Itasca, Koochiching, Lake of the Woods and 4 more	89 min
Jun 20, 5:26 PM CDT	Mesoscale Discussion	SPC	Clay, Norman	94 min
Jun 20, 5:46 PM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Carlton, Cass, Cook, Crow Wing, Itasca and 4 more	7 hr
Jun 19, 7:09 PM CDT	Severe Thunderstorm Watch	SPC	Butte, Harding, Perkins	7 hr
Jun 20, 12:55 PM CDT	Mesoscale Discussion	SPC	Corson, Dewey, Haakon, Potter, Stanley, Sully and 1 more	95 min
Jun 20, 1:15 PM CDT	Mesoscale Discussion	SPC	Bennett, Custer, Fall River, Haakon, Jackson, Meade and 4 more	2 hr
Jun 20, 1:37 PM CDT	Severe Thunderstorm Watch	SPC	Bennett, Butte, Custer, Fall River, Haakon, Jackson and 9 more	6 hr
Jun 20, 3:26 PM CDT	Mesoscale Discussion	SPC	Bennett, Jackson	2 hr
Jun 20, 5:14 PM CDT	Mesoscale Discussion	SPC	Bennett, Edmunds, Faulk, Hughes, Hyde, Jackson and 7 more	91 min

Nearby

Mesoscale Discussions in South Dakota, 2022 Mesoscale Discussions in Minnesota, 2022 Every mesoscale discussion in 2022

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.