Alert archive / Minnesota / Mesoscale Discussions in 2008

Mesoscale Discussion 1346

June 12, 200827 counties in Minnesota; Cass County, Richland County, Traill County, North Dakota; Grant County, Roberts County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2008, 7:22 PM CDT for 27 counties in Minnesota; Cass County, Richland County, Traill County, North Dakota; Grant County, Roberts County, South Dakota. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: Jun 12, 2008, 7:22 PM CDT (00:22 UTC)
Expired: Jun 12, 2008, 8:45 PM CDT
In force: 83 min
Issued by: the Storm Prediction Center

All 32 counties

Becker County, MN, Beltrami County, MN, Big Stone County, MN, Cass County, MN, Clay County, MN, Clearwater County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Itasca County, MN, Koochiching County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Pope County, MN, Red Lake County, MN, Roseau County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Cass County, ND, Richland County, ND, Traill County, ND, Grant County, SD, Roberts County, SD

The radar

The Fargo/Grand Forks radar (KMVX), 107 km from the middle of the area, began a volume at 00:21 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

International Fa, MN (KINL), launched 00:00Z, 0.4 hours before the alert went out and 235 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: 308 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1911 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 13, 5:33 PM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bowman, Burleigh, Dickey, Dunn and 15 more	87 min

Nearby

Mesoscale Discussions in Minnesota, 2008 Mesoscale Discussions in North Dakota, 2008 Mesoscale Discussions in South Dakota, 2008 Every mesoscale discussion in 2008

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.