Alert archive / Minnesota / Mesoscale Discussions in 2016

Mesoscale Discussion 891

June 12, 201612 counties in Minnesota; Codington County, Deuel County, Grant County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2016, 8:21 PM CDT for 12 counties in Minnesota; Codington County, Deuel County, Grant County, South Dakota. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jun 12, 2016, 8:21 PM CDT (01:21 UTC)
Expired: Jun 12, 2016, 9:45 PM CDT
In force: 84 min
Issued by: the Storm Prediction Center

Counties Big Stone County, MN, Chippewa County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, McLeod County, MN, Meeker County, MN, Pope County, MN, Renville County, MN, Stevens County, MN, Swift County, MN, Wright County, MN, Yellow Medicine County, MN, Codington County, SD, Deuel County, SD, Grant County, SD

The radar

The Minneapolis radar (KMPX), 169 km from the middle of the area, began a volume at 01:20 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

Minneapolis, MN (KMPX), launched 00:00Z, 1.4 hours before the alert went out and 166 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: 15 J/kg
Mixed-layer CIN: -443 J/kg
Mixed-layer LCL: 1181 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 375 m²/s²
0-3 km storm-relative helicity: 444 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

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 13, 1:45 PM CDT	Severe Thunderstorm Watch	SPC	Bennett, Butte, Custer, Fall River, Haakon, Harding and 10 more	9 hr
Jun 13, 3:51 PM CDT	Mesoscale Discussion	SPC	Butte, Custer, Fall River, Lawrence	54 min

Nearby

Mesoscale Discussions in Minnesota, 2016 Mesoscale Discussions in South Dakota, 2016 Every mesoscale discussion in 2016

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.