Alert archive / Wisconsin / Mesoscale Discussions in 2003

Mesoscale Discussion 1156

May 30, 200322 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 30, 2003, 5:54 PM CDT for 22 counties in Wisconsin. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: May 30, 2003, 5:54 PM CDT (22:54 UTC)
Expired: May 30, 2003, 7:30 PM CDT
In force: 96 min
Issued by: the Storm Prediction Center

All 22 counties

Adams County, WI, Brown County, WI, Calumet County, WI, Clark County, WI, Forest County, WI, Juneau County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marquette County, WI, Menominee County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Portage County, WI, Price County, WI, Shawano County, WI, Taylor County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The Green Bay radar (KGRB), 112 km from the middle of the area, began a volume at 22:56 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.9 hours before the alert went out and 114 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: 1874 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 102 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
May 29, 10:46 PM CDT	Mesoscale Discussion	SPC	Burnett, Douglas, Washburn	89 min
May 29, 11:30 PM CDT	Severe Thunderstorm Watch	SPC	Burnett, Douglas, Washburn	6 hr
May 30, 1:23 AM CDT	Mesoscale Discussion	SPC	Burnett, Douglas, Washburn	67 min
May 30, 4:32 AM CDT	Mesoscale Discussion	SPC	Crawford, Grant, Iowa, Lafayette, Richland, Sauk and 1 more	58 min
May 30, 2:06 PM CDT	Mesoscale Discussion	SPC	Dane, Green, Jefferson, Rock, Walworth	2 hr
May 30, 2:08 PM CDT	Mesoscale Discussion	SPC	Dane, Green, Jefferson, Rock, Walworth	3 hr
May 30, 3:45 PM CDT	Tornado Watch	SPC	Columbia, Dane, Dodge, Green, Iowa, Jefferson and 6 more	5 hr
May 30, 6:55 PM CDT	Mesoscale Discussion	SPC	Columbia, Dane, Dodge, Green, Iowa, Jefferson and 6 more	95 min

Nearby

Mesoscale Discussions in Wisconsin, 2003 Every mesoscale discussion in 2003

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.