Alert archive / Minnesota / Mesoscale Discussions in 2006

Mesoscale Discussion 1504

July 13, 200639 counties in Minnesota; Cass County, Richland County, Traill County, North Dakota; Codington County, Grant County, Roberts County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 13, 2006, 5:27 PM CDT for 39 counties in Minnesota; Cass County, Richland County, Traill County, North Dakota; Codington County, Grant County, Roberts County, South Dakota. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued: Jul 13, 2006, 5:27 PM CDT (22:27 UTC)
Expired: Jul 13, 2006, 7:00 PM CDT
In force: 93 min
Issued by: the Storm Prediction Center

All 45 counties

Aitkin County, MN, Becker County, MN, Beltrami County, MN, Benton County, MN, Big Stone County, MN, Cass County, MN, Chippewa County, MN, Clay County, MN, Clearwater County, MN, Crow Wing County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Itasca County, MN, Kandiyohi County, MN, Koochiching County, MN, Lac qui Parle County, MN, Mahnomen County, MN, Marshall County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Pope County, MN, Red Lake County, MN, Renville County, MN, Sherburne County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Wright County, MN, Cass County, ND, Richland County, ND, Traill County, ND, Codington County, SD, Grant County, SD, Roberts County, SD

The radar

The Fargo/Grand Forks radar (KMVX), 159 km from the middle of the area, began a volume at 22:27 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 12:00Z, 10.5 hours before the alert went out and 267 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: 819 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 793 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -56 m²/s²
0-3 km storm-relative helicity: -19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jul 13, 12:21 PM CDT	Severe Thunderstorm Watch	SPC	Cottonwood, Jackson, Lincoln, Lyon, Murray, Nobles and 2 more	10 hr
Jul 13, 1:51 PM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Big Stone, Chippewa, Clay, Clearwater and 21 more	114 min
Jul 13, 2:25 PM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Big Stone, Brown, Carver, Cass and 46 more	8 hr
Jul 13, 11:47 AM CDT	Mesoscale Discussion	SPC	Beadle, Bon Homme, Charles Mix, Clay, Davison, Douglas and 13 more	118 min

Nearby

Mesoscale Discussions in Minnesota, 2006 Mesoscale Discussions in North Dakota, 2006 Mesoscale Discussions in South Dakota, 2006 Every mesoscale discussion in 2006

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.