Alert archive / Wisconsin / Severe Thunderstorm Watches in 2006

Severe Thunderstorm Watch 82

March 13, 200623 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at Mar 13, 2006, 2:06 AM CST for 23 counties in Wisconsin. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Mar 13, 2006, 2:06 AM CST (08:06 UTC)
Expired
Mar 13, 2006, 4:33 AM CST
In force
2 hr
Issued by
the Storm Prediction Center
All 23 counties

Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Kenosha County, WI, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Sheboygan County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI

The radar

The Milwaukee radar (KMKX), 109 km from the middle of the area, began a volume at 08:09 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.

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 8.1 hours before the alert went out and 199 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 00:00Z on 2006-03-13Temperature 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 00:00Z on 2006-03-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 756 square meters per square second.1939587897Sfc1 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
653 m above ground
0-6 km bulk shear
86 kt
0-1 km storm-relative helicity
756 m²/s²
0-3 km storm-relative helicity
1064 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 12, 7:15 PM CSTMesoscale DiscussionSPCDane, Grant, Green, Iowa, Jefferson, Lafayette and 2 more90 min
Mar 12, 8:42 PM CSTTornado WatchSPCKenosha, Racine, Rock, Walworth7 hr
Mar 13, 1:47 AM CSTMesoscale DiscussionSPCAdams, Calumet, Columbia, Crawford, Dane, Dodge and 21 more58 min
Mar 13, 7:57 AM CSTMesoscale DiscussionSPCAshland, Barron, Buffalo, Chippewa, Clark, Dunn and 18 more5 hr

Nearby

Severe Thunderstorm Watches in Wisconsin, 2006Every severe thunderstorm watch in 2006

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.