Alert archive / Minnesota / Mesoscale Discussions in 2005

Mesoscale Discussion 1834

July 23, 200522 counties in Minnesota; 16 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 23, 2005, 9:47 AM CDT for 22 counties in Minnesota; 16 counties in Wisconsin. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Jul 23, 2005, 9:47 AM CDT (14:47 UTC)
Expired: Jul 23, 2005, 11:15 AM CDT
In force: 88 min
Issued by: the Storm Prediction Center

All 38 counties

Anoka County, MN, Carver County, MN, Dakota County, MN, Dodge County, MN, Goodhue County, MN, Hennepin County, MN, Houston County, MN, Le Sueur County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Olmsted County, MN, Ramsey County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Washington County, MN, Winona County, MN, Wright County, MN, Adams County, WI, Buffalo County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Monroe County, WI, Pepin County, WI, Pierce County, WI, Portage County, WI, Saint Croix County, WI, Trempealeau County, WI, Vernon County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 98 km from the middle of the area, began a volume at 14:48 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, 2.8 hours before the alert went out and 304 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: 1843 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 197 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 23, 7:15 AM CDT	Severe Thunderstorm Watch	SPC	Anoka, Big Stone, Carver, Chippewa, Dakota, Dodge and 25 more	5 hr
Jul 23, 10:15 AM CDT	Severe Thunderstorm Watch	SPC	Chisago, Dodge, Goodhue, Olmsted, Wabasha, Washington and 1 more	5 hr
Jul 23, 12:24 PM CDT	Mesoscale Discussion	SPC	Adams, Barron, Buffalo, Calumet, Chippewa, Clark and 21 more	96 min
Jul 23, 12:50 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Brown, Calumet, Columbia, Dodge, Fond du Lac and 17 more	3 hr
Jul 23, 3:10 PM CDT	Mesoscale Discussion	SPC	Columbia, Dane, Dodge, Fond du Lac, Green, Jefferson and 8 more	95 min
Jul 23, 3:10 PM CDT	Severe Thunderstorm Watch	SPC	Columbia, Dodge, Fond du Lac, Green Lake, Jefferson, Kenosha and 8 more	2 hr
Jul 23, 4:49 PM CDT	Mesoscale Discussion	SPC	Kenosha, Milwaukee, Racine, Rock, Walworth	86 min

Nearby

Mesoscale Discussions in Minnesota, 2005 Mesoscale Discussions in Wisconsin, 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.