Alert archive / Wisconsin / Mesoscale Discussions in 2005

Mesoscale Discussion 439

March 30, 20054 states

The Storm Prediction Center issued this mesoscale discussion at Mar 30, 2005, 3:54 PM CST for 4 states. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued
Mar 30, 2005, 3:54 PM CST (21:54 UTC)
Expired
Mar 30, 2005, 5:00 PM CST
In force
66 min
Issued by
the Storm Prediction Center
All 55 counties

Allamakee County, IA, Clayton County, IA, Clinton County, IA, Dubuque County, IA, Jackson County, IA, Winneshiek County, IA, Boone County, IL, Bureau County, IL, Carroll County, IL, Jo Daviess County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Stephenson County, IL, Whiteside County, IL, Winnebago County, IL, Fillmore County, MN, Houston County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Eau Claire County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jackson County, WI, Jefferson County, WI, Juneau County, WI, Kenosha County, WI, La Crosse County, WI, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Monroe County, WI, Pepin County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Walworth County, WI, Waukesha County, WI, Waushara County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 110 km from the middle of the area, began a volume at 21:56 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

Davenport, (KDVN), launched 12:00Z, 9.9 hours before the alert went out and 179 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, Davenport, at 12:00Z on 2005-03-30Temperature 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, Davenport, at 12:00Z on 2005-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 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
1316 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
316 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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
Mar 30, 10:46 AM CSTMesoscale DiscussionSPCAdams, Brown, Carroll, Cass, Fulton, Hancock and 14 more119 min
Mar 30, 11:05 AM CSTTornado WatchSPCBureau, Carroll, Fulton, Hancock, Henderson, Henry and 15 more5 hr
Mar 30, 12:08 PM CSTMesoscale DiscussionSPCBond, Calhoun, Cass, Champaign, Christian, Clark and 49 more2 hr
Mar 30, 12:55 PM CSTTornado WatchSPCBond, Boone, Bureau, Champaign, Christian, Clark and 49 more7 hr
Mar 30, 1:23 PM CSTMesoscale DiscussionSPCBureau, Carroll, Fulton, Hancock, Henderson, Henry and 15 more97 min
Mar 30, 2:15 PM CSTTornado WatchSPCBoone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 11 more6 hr
Mar 30, 3:18 PM CSTMesoscale DiscussionSPCBoone, Champaign, Clark, Coles, Cook, Crawford and 28 more117 min
Mar 30, 5:24 PM CSTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Coles and 30 more2 hr
Mar 30, 6:03 AM CSTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 32 more117 min
Mar 30, 8:40 AM CSTSevere Thunderstorm WatchSPCAdair, Adams, Audubon, Boone, Butler, Calhoun and 38 more5 hr
Mar 30, 10:50 AM CSTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 29 more85 min
Mar 30, 1:14 PM CSTMesoscale DiscussionSPCBoone, Butler, Cerro Gordo, Floyd, Franklin, Hamilton and 7 more61 min
Mar 30, 2:00 PM CSTMesoscale DiscussionSPCBoone, Butler, Cerro Gordo, Floyd, Franklin, Hamilton and 7 more30 min

Nearby

Mesoscale Discussions in Wisconsin, 2005Mesoscale Discussions in Illinois, 2005Mesoscale Discussions in Iowa, 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.