Alert archive / South Dakota / Mesoscale Discussions in 2018

Mesoscale Discussion 762

June 16, 2018Big Stone County, Traverse County, Minnesota; Sargent County, North Dakota; 13 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2018, 10:17 PM CDT for Big Stone County, Traverse County, Minnesota; Sargent County, North Dakota; 13 counties in South Dakota. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Jun 16, 2018, 10:17 PM CDT (03:17 UTC)
Expired: Jun 16, 2018, 11:45 PM CDT
In force: 88 min
Issued by: the Storm Prediction Center

Counties Big Stone County, MN, Traverse County, MN, Sargent County, ND, Beadle County, SD, Brookings County, SD, Brown County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Kingsbury County, SD, Marshall County, SD, Roberts County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 84 km from the middle of the area, began a volume at 03:21 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, 3.3 hours before the alert went out and 55 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: 1622 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 976 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 321 m²/s²
0-3 km storm-relative helicity: 563 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 30.6

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 16, 9:01 PM CDT	Mesoscale Discussion	SPC	Big Stone, Chippewa, Douglas, Grant, Kandiyohi, Lac qui Parle and 12 more	119 min
Jun 16, 9:08 PM CDT	Mesoscale Discussion	SPC	Aitkin, Becker, Benton, Carlton, Cass, Crow Wing and 7 more	67 min
Jun 16, 9:47 PM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Becker, Benton, Carlton, Cass, Chisago and 22 more	7 hr
Jun 16, 11:44 PM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Becker, Benton, Carlton, Cass and 28 more	2 hr
Jun 17, 2:38 AM CDT	Mesoscale Discussion	SPC	Aitkin, Carlton, Chisago, Isanti, Kanabec, Mille Lacs and 1 more	97 min
Jun 17, 12:12 PM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Benton, Carlton, Carver, Chippewa and 20 more	93 min
Jun 17, 12:34 PM CDT	Tornado Watch	SPC	Aitkin, Anoka, Benton, Carlton, Chisago, Crow Wing and 10 more	8 hr
Jun 17, 3:08 PM CDT	Mesoscale Discussion	SPC	Anoka, Chisago, Hennepin, Isanti, Pine, Ramsey and 1 more	97 min
Jun 17, 3:52 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Cottonwood, Jackson, Lyon, Martin and 8 more	53 min
Jun 17, 5:23 PM CDT	Mesoscale Discussion	SPC	Anoka, Chisago, Hennepin, Isanti, Ramsey, Sherburne and 2 more	2 hr
Jun 16, 7:59 PM CDT	Mesoscale Discussion	SPC	Bennett, Buffalo, Dewey, Edmunds, Faulk, Haakon and 13 more	91 min
Jun 16, 9:50 PM CDT	Mesoscale Discussion	SPC	Bennett, Buffalo, Dewey, Edmunds, Faulk, Haakon and 14 more	85 min
Jun 17, 5:47 PM CDT	Mesoscale Discussion	SPC	Bon Homme, Hanson, Hutchinson, McCook, Turner, Yankton	118 min

Nearby

Mesoscale Discussions in South Dakota, 2018 Mesoscale Discussions in Minnesota, 2018 Mesoscale Discussions in North Dakota, 2018 Every mesoscale discussion in 2018

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.