Alert archive / Wisconsin / Mesoscale Discussions in 2003

Mesoscale Discussion 2246

August 25, 200319 counties in Minnesota; 23 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Aug 25, 2003, 11:33 AM CDT for 19 counties in Minnesota; 23 counties in Wisconsin. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Aug 25, 2003, 11:33 AM CDT (16:33 UTC)
Expired: Aug 25, 2003, 1:30 PM CDT
In force: 117 min
Issued by: the Storm Prediction Center

All 42 counties

Aitkin County, MN, Anoka County, MN, Benton County, MN, Carlton County, MN, Chisago County, MN, Crow Wing County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Ramsey County, MN, Sherburne County, MN, Stearns County, MN, Todd County, MN, Wadena County, MN, Washington County, MN, Wright County, MN, Barron County, WI, Buffalo County, WI, Burnett County, WI, Chippewa County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Jackson 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, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Taylor County, WI, Trempealeau County, WI, Washburn County, WI, Wood County, WI

The radar

The Minneapolis radar (KMPX), 108 km from the middle of the area, began a volume at 16:35 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, 4.6 hours before the alert went out and 110 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: 20 J/kg
Mixed-layer CIN: -429 J/kg
Mixed-layer LCL: 1853 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 65 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
Aug 24, 8:16 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Cottonwood, Faribault, Freeborn, Jackson, Martin and 8 more	119 min
Aug 25, 4:43 PM CDT	Mesoscale Discussion	SPC	Beltrami, Clearwater, Itasca, Kittson, Koochiching, Lake of the Woods and 5 more	62 min
Aug 25, 5:00 PM CDT	Tornado Watch	SPC	Beltrami, Clearwater, Kittson, Lake of the Woods, Marshall, Pennington and 3 more	5 hr
Aug 25, 5:20 PM CDT	Severe Thunderstorm Watch	SPC	Fillmore, Freeborn, Houston, Mower	6 hr
Aug 25, 6:21 PM CDT	Mesoscale Discussion	SPC	Big Stone, Lac qui Parle, Lincoln, Lyon, Traverse, Wilkin and 1 more	54 min
Aug 25, 5:41 PM CDT	Mesoscale Discussion	SPC	Door, Florence, Forest	94 min
Aug 25, 6:43 PM CDT	Mesoscale Discussion	SPC	Columbia, Dane, Dodge, Green, Iowa, Jefferson and 9 more	2 hr

Nearby

Mesoscale Discussions in Wisconsin, 2003 Mesoscale Discussions in Minnesota, 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.