Alert archive / Wisconsin / Mesoscale Discussions in 2008

Mesoscale Discussion 104

January 29, 20085 counties in Michigan; Houston County, Wabasha County, Winona County, Minnesota; 37 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jan 29, 2008, 11:34 AM EST for 5 counties in Michigan; Houston County, Wabasha County, Winona County, Minnesota; 37 counties in Wisconsin. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Jan 29, 2008, 11:34 AM EST (16:34 UTC)
Expired
Jan 29, 2008, 3:30 PM EST
In force
4 hr
Issued by
the Storm Prediction Center
All 45 counties

Baraga County, MI, Dickinson County, MI, Gogebic County, MI, Iron County, MI, Ontonagon County, MI, Houston County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Ashland County, WI, Barron County, WI, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Florence County, WI, Forest County, WI, Iron County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marinette County, WI, Menominee County, WI, Monroe County, WI, Oconto County, WI, Oneida County, WI, Pepin County, WI, Pierce County, WI, Portage County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Shawano County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Vilas County, WI, Waupaca County, WI, Waushara County, WI, Wood County, WI

The radar

The Green Bay radar (KGRB), 155 km from the middle of the area, began a volume at 16:37 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 294 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, Minneapolis, MN at 12:00Z on 2008-01-29Temperature 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, Minneapolis, MN at 12:00Z on 2008-01-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -141 square meters per square second.1939587897117Sfc1 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
836 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
-141 m²/s²
0-3 km storm-relative helicity
63 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
Jan 29, 6:38 PM ESTMesoscale DiscussionSPCBranch, Hillsdale, Lenawee, Monroe97 min
Jan 29, 8:39 AM ESTMesoscale DiscussionSPCBlue Earth, Cottonwood, Dodge, Faribault, Fillmore, Freeborn and 10 more5 hr
Jan 29, 1:19 PM ESTMesoscale DiscussionSPCColumbia, Dane, Dodge, Fond du Lac, Grant, Green and 10 more4 hr

Nearby

Mesoscale Discussions in Wisconsin, 2008Mesoscale Discussions in Michigan, 2008Mesoscale Discussions in Minnesota, 2008Every mesoscale discussion in 2008

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.