Alert archive / Minnesota / Mesoscale Discussions in 2006

Mesoscale Discussion 1007

May 27, 20066 counties in Iowa; 21 counties in Minnesota; 17 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 27, 2006, 8:04 PM CDT for 6 counties in Iowa; 21 counties in Minnesota; 17 counties in Wisconsin. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: May 27, 2006, 8:04 PM CDT (01:04 UTC)
Expired: May 27, 2006, 10:00 PM CDT
In force: 116 min
Issued by: the Storm Prediction Center

All 44 counties

Allamakee County, IA, Chickasaw County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Worth County, IA, Anoka County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Dodge County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Houston County, MN, Le Sueur 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, Barron County, WI, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Crawford County, WI, Dunn County, WI, Eau Claire County, WI, Jackson County, WI, La Crosse County, WI, Monroe County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI, Trempealeau County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 75 km from the middle of the area, began a volume at 01:07 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 00:00Z, 1.1 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: 849 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 1480 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 221 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.1

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
May 27, 11:12 PM CDT	Mesoscale Discussion	SPC	Brown, Calumet, Door, Florence, Fond du Lac, Forest and 14 more	2 hr

Nearby

Mesoscale Discussions in Minnesota, 2006 Mesoscale Discussions in Wisconsin, 2006 Mesoscale Discussions in Iowa, 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.