Alert archive / South Dakota / Mesoscale Discussions in 2018

Mesoscale Discussion 705

June 10, 2018Logan County, McIntosh County, North Dakota; 14 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2018, 10:21 PM CDT for Logan County, McIntosh County, North Dakota; 14 counties in South Dakota. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued: Jun 10, 2018, 10:21 PM CDT (03:21 UTC)
Expired: Jun 10, 2018, 11:15 PM CDT
In force: 54 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Logan County, ND, McIntosh County, ND, 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, McPherson County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 130 km from the middle of the area, began a volume at 03:22 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.4 hours before the alert went out and 231 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: 1503 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 2075 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

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 10, 9:02 PM CDT	Mesoscale Discussion	SPC	Bottineau, Burke, Burleigh, Emmons, Grant, McHenry and 8 more	118 min
Jun 10, 8:52 PM CDT	Mesoscale Discussion	SPC	Butte, Corson, Custer, Dewey, Haakon, Harding and 11 more	113 min
Jun 11, 2:38 PM CDT	Mesoscale Discussion	SPC	Clay, Union	2 hr
Jun 11, 3:42 PM CDT	Tornado Watch	SPC	Union	6 hr

Nearby

Mesoscale Discussions in South Dakota, 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.