Alert archive / Wisconsin / Mesoscale Discussions in 2005

Mesoscale Discussion 1866

July 25, 2005Winona County, Minnesota; 48 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 25, 2005, 4:22 PM CDT for Winona County, Minnesota; 48 counties in Wisconsin. It was in force for 23 min.

The area

The outline as issued.

The facts

Issued
Jul 25, 2005, 4:22 PM CDT (21:22 UTC)
Expired
Jul 25, 2005, 4:45 PM CDT
In force
23 min
Issued by
the Storm Prediction Center
All 49 counties

Winona County, MN, Adams County, WI, Barron County, WI, Brown County, WI, Buffalo County, WI, Calumet County, WI, Chippewa County, WI, Clark County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Dunn County, WI, Eau Claire County, WI, Fond du Lac County, WI, Green Lake County, WI, Iowa County, WI, Jackson County, WI, Jefferson County, WI, Juneau County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marquette County, WI, Menominee County, WI, Milwaukee County, WI, Monroe County, WI, Outagamie County, WI, Ozaukee County, WI, Pepin County, WI, Pierce County, WI, Portage County, WI, Price County, WI, Richland County, WI, Rusk County, WI, Sauk County, WI, Shawano County, WI, Sheboygan County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 94 km from the middle of the area, began a volume at 21:22 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, 9.4 hours before the alert went out and 163 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 12:00Z on 2005-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 2005-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -55 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2335 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
-16 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.

IssuedProductOfficeCountiesLasted
Jul 24, 9:45 PM CDTSevere Thunderstorm WatchSPCCottonwood, Jackson, Murray, Nobles, Pipestone, Rock5 hr
Jul 24, 11:45 PM CDTMesoscale DiscussionSPCCottonwood, Jackson, Murray, Nobles, Pipestone, Rock60 min
Jul 25, 1:55 PM CDTMesoscale DiscussionSPCBlue Earth, Brown, Carver, Cottonwood, Dodge, Faribault and 20 more2 hr
Jul 25, 3:30 PM CDTTornado WatchSPCBlue Earth, Brown, Cottonwood, Dodge, Faribault, Fillmore and 18 more7 hr
Jul 25, 4:40 PM CDTTornado WatchSPCFillmore, Houston, Wabasha, Winona7 hr
Jul 25, 6:56 PM CDTMesoscale DiscussionSPCChisago, Dodge, Faribault, Freeborn, Goodhue, Mower and 4 more94 min
Jul 24, 8:20 PM CDTSevere Thunderstorm WatchSPCGrant, Green, Iowa, Lafayette5 hr
Jul 24, 11:11 PM CDTMesoscale DiscussionSPCGrant, Iowa, Lafayette64 min
Jul 25, 1:31 PM CDTMesoscale DiscussionSPCColumbia, Dane, Dodge, Green, Iowa, Jefferson and 5 more89 min

Nearby

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