Alert archive / Wisconsin / Mesoscale Discussions in 2003

Mesoscale Discussion 1536

June 28, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Jun 28, 2003, 2:58 PM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 28, 2003, 2:58 PM CDT (19:58 UTC)
Expired: Jun 28, 2003, 5:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 56 counties

Cedar County, IA, Clinton County, IA, Dubuque County, IA, Iowa County, IA, Jackson County, IA, Jasper County, IA, Johnson County, IA, Jones County, IA, Linn County, IA, Muscatine County, IA, Poweshiek County, IA, Scott County, IA, Carroll County, IL, Jo Daviess County, IL, Stephenson County, IL, Winnebago County, IL, Anoka County, MN, Benton County, MN, Carver County, MN, Dakota County, MN, Goodhue County, MN, Hennepin County, MN, Houston County, MN, Isanti County, MN, Ramsey County, MN, Scott County, MN, Sherburne County, MN, Wabasha County, MN, Washington County, MN, Winona County, MN, Wright County, MN, Adams County, WI, Buffalo County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dunn County, WI, Eau Claire County, WI, Grant County, WI, Green County, WI, Iowa County, WI, Jackson County, WI, Jefferson County, WI, Juneau County, WI, La Crosse County, WI, Lafayette County, WI, Marquette County, WI, Monroe County, WI, Pepin County, WI, Pierce County, WI, Richland County, WI, Rock County, WI, Saint Croix County, WI, Sauk County, WI, Trempealeau County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 59 km from the middle of the area, began a volume at 19:57 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

Davenport, (KDVN), launched 12:00Z, 8.0 hours before the alert went out and 229 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: 13 J/kg
Mixed-layer CIN: -171 J/kg
Mixed-layer LCL: 1264 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -48 m²/s²
0-3 km storm-relative helicity: -85 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
Jun 28, 1:36 PM CDT	Mesoscale Discussion	SPC	Bureau, Ford, Grundy, Henry, Iroquois, Kankakee and 13 more	2 hr
Jun 27, 9:43 PM CDT	Mesoscale Discussion	SPC	Allamakee, Black Hawk, Bremer, Buchanan, Butler, Chickasaw and 5 more	62 min
Jun 27, 10:06 PM CDT	Mesoscale Discussion	SPC	Fremont, Mills, Montgomery, Page, Ringgold, Taylor	84 min
Jun 28, 12:41 PM CDT	Mesoscale Discussion	SPC	Aitkin, Becker, Beltrami, Benton, Cass, Clearwater and 17 more	2 hr
Jun 28, 6:56 PM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Benton, Cass, Chisago, Crow Wing and 10 more	2 hr

Nearby

Mesoscale Discussions in Wisconsin, 2003 Mesoscale Discussions in Minnesota, 2003 Mesoscale Discussions in Iowa, 2003 Every mesoscale discussion in 2003

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.