Alert archive / South Dakota / Mesoscale Discussions in 2012

Mesoscale Discussion 1110

June 10, 2012Clay County, Wilkin County, Minnesota; 9 counties in North Dakota; 13 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2012, 12:45 AM CDT for Clay County, Wilkin County, Minnesota; 9 counties in North Dakota; 13 counties in South Dakota. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: Jun 10, 2012, 12:45 AM CDT (05:45 UTC)
Expired: Jun 10, 2012, 1:45 AM CDT
In force: 60 min
Issued by: the Storm Prediction Center
Chance of a watch: 95%

All 24 counties

Clay County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, LaMoure County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Traill County, ND, Brown County, SD, Campbell County, SD, Day County, SD, Edmunds County, SD, Faulk County, SD, Hand County, SD, Hyde County, SD, Marshall County, SD, McPherson County, SD, Potter County, SD, Spink County, SD, Sully County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 35 km from the middle of the area, began a volume at 05:47 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 367Jun 10, 1:10 AM CDT

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 5.8 hours before the alert went out and 90 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: 1653 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 2112 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 9, 8:02 PM CDT	Mesoscale Discussion	SPC	Kittson, Marshall, Roseau	28 min
Jun 10, 1:07 AM CDT	Severe Thunderstorm Watch	SPC	Big Stone, Clay, Grant, Norman, Traverse, Wilkin	6 hr
Jun 10, 1:34 PM CDT	Mesoscale Discussion	SPC	Aitkin, Benton, Brown, Cass, Chippewa, Cottonwood and 29 more	56 min
Jun 10, 3:03 PM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Anoka, Becker, Beltrami, Benton, Blue Earth and 58 more	8 hr
Jun 10, 5:38 PM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Beltrami, Benton, Blue Earth, Brown and 45 more	67 min
Jun 9, 10:08 PM CDT	Mesoscale Discussion	SPC	Bennett, Brown, Buffalo, Campbell, Edmunds, Faulk and 17 more	67 min
Jun 9, 10:23 PM CDT	Severe Thunderstorm Watch	SPC	Bennett, Buffalo, Campbell, Dewey, Edmunds, Faulk and 17 more	5 hr

Nearby

Mesoscale Discussions in South Dakota, 2012 Mesoscale Discussions in North Dakota, 2012 Mesoscale Discussions in Minnesota, 2012 Every mesoscale discussion in 2012

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.