Alert archive / Wisconsin / Mesoscale Discussions in 2008

Mesoscale Discussion 1749

July 10, 2008Allamakee County, Winneshiek County, Iowa; 7 counties in Minnesota; 10 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 10, 2008, 1:49 PM CDT for Allamakee County, Winneshiek County, Iowa; 7 counties in Minnesota; 10 counties in Wisconsin. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Jul 10, 2008, 1:49 PM CDT (18:49 UTC)
Expired: Jul 10, 2008, 3:15 PM CDT
In force: 86 min
Issued by: the Storm Prediction Center

Counties Allamakee County, IA, Winneshiek County, IA, Dodge County, MN, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Steele County, MN, Winona County, MN, Buffalo County, WI, Crawford County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Monroe County, WI, Pepin County, WI, Richland County, WI, Trempealeau County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 33 km from the middle of the area, began a volume at 18:52 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, 6.8 hours before the alert went out and 190 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: 1956 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 100 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 10, 9:36 AM CDT	Mesoscale Discussion	SPC	Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 24 more	84 min
Jul 10, 12:06 PM CDT	Severe Thunderstorm Watch	SPC	Allamakee, Clayton, Howard, Mitchell, Winneshiek	6 hr
Jul 10, 12:55 PM CDT	Mesoscale Discussion	SPC	Cedar, Clayton, Clinton, Delaware, Dubuque, Jackson and 6 more	95 min
Jul 10, 1:18 PM CDT	Severe Thunderstorm Watch	SPC	Benton, Cedar, Clinton, Delaware, Des Moines, Dubuque and 12 more	10 hr
Jul 10, 3:38 PM CDT	Mesoscale Discussion	SPC	Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 14 more	97 min
Jul 10, 5:52 PM CDT	Mesoscale Discussion	SPC	Benton, Cedar, Clinton, Delaware, Dubuque, Iowa and 9 more	83 min
Jul 10, 7:41 AM CDT	Mesoscale Discussion	SPC	Becker, Benton, Big Stone, Chippewa, Clay, Douglas and 15 more	64 min
Jul 10, 7:58 AM CDT	Severe Thunderstorm Watch	SPC	Becker, Big Stone, Chippewa, Clay, Douglas, Grant and 18 more	5 hr

Nearby

Mesoscale Discussions in Wisconsin, 2008 Mesoscale Discussions in Minnesota, 2008 Mesoscale Discussions in Iowa, 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.