Alert archive / Minnesota / Mesoscale Discussions in 2007

Mesoscale Discussion 1185

June 17, 200715 counties in Minnesota; 8 counties in North Dakota; Day County, Marshall County, Roberts County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2007, 10:43 PM CDT for 15 counties in Minnesota; 8 counties in North Dakota; Day County, Marshall County, Roberts County, South Dakota. It was in force for 62 min.

The area

The outline as issued.

The facts

Issued: Jun 17, 2007, 10:43 PM CDT (03:43 UTC)
Expired: Jun 17, 2007, 11:45 PM CDT
In force: 62 min
Issued by: the Storm Prediction Center

All 26 counties

Becker County, MN, Big Stone County, MN, Clay County, MN, Clearwater County, MN, Grant County, MN, Kittson County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Traverse County, MN, Wilkin County, MN, Cass County, ND, Grand Forks County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Traill County, ND, Walsh County, ND, Day County, SD, Marshall County, SD, Roberts County, SD

The radar

The Fargo/Grand Forks radar (KMVX), 52 km from the middle of the area, began a volume at 03:44 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 413Jun 17, 11:50 PM CDT

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 3.7 hours before the alert went out and 287 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 573 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 326 m²/s²
0-3 km storm-relative helicity: 494 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.4

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 17, 7:59 PM CDT	Mesoscale Discussion	SPC	Beltrami, Clay, Clearwater, Itasca, Kittson, Koochiching and 9 more	91 min
Jun 18, 12:03 AM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Clay, Clearwater, Grant, Hubbard and 12 more	3 hr
Jun 18, 12:44 AM CDT	Mesoscale Discussion	SPC	Aitkin, Beltrami, Benton, Carlton, Cass, Clearwater and 14 more	61 min
Jun 18, 1:09 AM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Cass, Crow Wing, Itasca, Koochiching	3 hr
Jun 18, 12:46 PM CDT	Severe Thunderstorm Watch	SPC	Dodge, Fillmore, Goodhue, Houston, Mower, Olmsted and 2 more	7 hr
Jun 18, 3:27 PM CDT	Mesoscale Discussion	SPC	Fillmore, Houston, Mower, Olmsted, Wabasha, Winona	93 min
Jun 17, 10:25 PM CDT	Mesoscale Discussion	SPC	Brown, Brule, Buffalo, Faulk, Hand, Hyde and 4 more	65 min

Nearby

Mesoscale Discussions in Minnesota, 2007 Mesoscale Discussions in North Dakota, 2007 Mesoscale Discussions in South Dakota, 2007 Every mesoscale discussion in 2007

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.