Alert archive / Iowa / Mesoscale Discussions in 2014

Mesoscale Discussion 1285

July 6, 201448 counties in Iowa; 20 counties in Minnesota; 36 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2014, 4:44 PM CDT for 48 counties in Iowa; 20 counties in Minnesota; 36 counties in Wisconsin. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued: Jul 6, 2014, 4:44 PM CDT (21:44 UTC)
Expired: Jul 6, 2014, 5:45 PM CDT
In force: 61 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 104 counties

Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Buchanan County, IA, Buena Vista County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cerro Gordo County, IA, Cherokee County, IA, Chickasaw County, IA, Clay County, IA, Clayton County, IA, Dallas County, IA, Delaware County, IA, Dubuque County, IA, Emmet County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Howard County, IA, Humboldt County, IA, Iowa County, IA, Jasper County, IA, Jones County, IA, Kossuth County, IA, Linn County, IA, Marshall County, IA, Mitchell County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Poweshiek County, IA, Sac County, IA, Story County, IA, Tama County, IA, Webster County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Wright County, IA, Blue Earth County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Houston County, MN, Le Sueur County, MN, Martin County, MN, Mower County, MN, Olmsted County, MN, Ramsey County, MN, Rice County, MN, Scott County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Winona County, MN, Adams County, WI, Ashland County, WI, Barron County, WI, Bayfield County, WI, Buffalo County, WI, Burnett County, WI, Chippewa County, WI, Clark County, WI, Crawford County, WI, Douglas County, WI, Dunn County, WI, Eau Claire County, WI, Grant County, WI, Iowa County, WI, Iron County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Lincoln County, WI, Marathon County, WI, Monroe County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Portage County, WI, Price County, WI, Richland County, WI, Rusk County, WI, Saint Croix County, WI, Sauk County, WI, Sawyer County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Washburn County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 91 km from the middle of the area, began a volume at 21:44 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.7 hours before the alert went out and 148 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: 1540 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 545 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.0

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 5, 10:11 PM CDT	Mesoscale Discussion	SPC	Becker, Clay, Clearwater, Kittson, Mahnomen, Marshall and 5 more	64 min
Jul 5, 10:48 PM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Clay, Clearwater, Hubbard, Kittson and 10 more	7 hr
Jul 6, 1:30 AM CDT	Mesoscale Discussion	SPC	Aitkin, Crow Wing, Morrison, Todd	60 min
Jul 6, 2:20 AM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Clay, Clearwater, Hubbard, Lake of the Woods and 10 more	85 min
Jul 6, 5:19 AM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Clearwater, Hubbard, Mahnomen, Otter Tail and 5 more	26 min

Nearby

Mesoscale Discussions in Iowa, 2014 Mesoscale Discussions in Wisconsin, 2014 Mesoscale Discussions in Minnesota, 2014 Every mesoscale discussion in 2014

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.