Alert archive / Wisconsin / Mesoscale Discussions in 2005

Mesoscale Discussion 2186

September 13, 2005Fillmore County, Houston County, Winona County, Minnesota; 26 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Sep 13, 2005, 1:55 PM CDT for Fillmore County, Houston County, Winona County, Minnesota; 26 counties in Wisconsin. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Sep 13, 2005, 1:55 PM CDT (18:55 UTC)
Expired: Sep 13, 2005, 4:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 29 counties

Fillmore County, MN, Houston County, MN, Winona County, MN, Adams County, WI, Clark County, WI, Columbia County, WI, Crawford County, WI, Green Lake County, WI, Iowa County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marquette County, WI, Menominee County, WI, Monroe County, WI, Outagamie County, WI, Portage County, WI, Richland County, WI, Sauk County, WI, Shawano County, WI, Trempealeau County, WI, Vernon County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 120 km from the middle of the area, began a volume at 18:54 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 6.9 hours before the alert went out and 152 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: 442 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 847 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

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
Sep 12, 7:45 PM CDT	Tornado Watch	SPC	Anoka, Blue Earth, Brown, Carver, Chippewa, Cottonwood and 31 more	6 hr
Sep 12, 9:36 PM CDT	Mesoscale Discussion	SPC	Anoka, Big Stone, Blue Earth, Brown, Carver, Chippewa and 37 more	84 min
Sep 13, 1:19 AM CDT	Mesoscale Discussion	SPC	Dodge, Fillmore, Freeborn, Goodhue, Houston, Mower and 4 more	56 min
Sep 13, 11:19 AM CDT	Mesoscale Discussion	SPC	Dodge, Fillmore, Freeborn, Houston, Mower, Olmsted and 3 more	116 min
Sep 13, 2:20 PM CDT	Severe Thunderstorm Watch	SPC	Fillmore, Houston, Winona	4 hr
Sep 13, 3:25 PM CDT	Mesoscale Discussion	SPC	Fillmore, Houston, Winona	95 min
Sep 13, 12:34 AM CDT	Mesoscale Discussion	SPC	Chippewa, Florence, Forest, Iron, Langlade, Lincoln and 10 more	26 min
Sep 13, 11:55 AM CDT	Severe Thunderstorm Watch	SPC	Crawford, Grant, Richland	5 hr
Sep 13, 5:15 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Calumet, Dodge, Fond du Lac, Green Lake, Jefferson and 13 more	2 hr

Nearby

Mesoscale Discussions in Wisconsin, 2005 Mesoscale Discussions in Minnesota, 2005 Every mesoscale discussion in 2005

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.