Alert archive / Wisconsin / Mesoscale Discussions in 2007

Mesoscale Discussion 345

March 25, 200716 counties in Michigan; 27 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Mar 25, 2007, 10:00 PM EDT for 16 counties in Michigan; 27 counties in Wisconsin. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Mar 25, 2007, 10:00 PM EDT (02:00 UTC)
Expired: Mar 25, 2007, 11:30 PM EDT
In force: 90 min
Issued by: the Storm Prediction Center

All 43 counties

Alger County, MI, Antrim County, MI, Baraga County, MI, Benzie County, MI, Charlevoix County, MI, Delta County, MI, Dickinson County, MI, Grand Traverse County, MI, Houghton County, MI, Iron County, MI, Leelanau County, MI, Luce County, MI, Manistee County, MI, Marquette County, MI, Menominee County, MI, Schoolcraft County, MI, Adams County, WI, Brown County, WI, Calumet County, WI, Door County, WI, Florence County, WI, Fond du Lac County, WI, Forest County, WI, Green Lake County, WI, Kewaunee County, WI, Langlade County, WI, Lincoln County, WI, Manitowoc County, WI, Marathon County, WI, Marinette County, WI, Marquette County, WI, Menominee County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Portage County, WI, Shawano County, WI, Sheboygan County, WI, Vilas County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The Green Bay radar (KGRB), 75 km from the middle of the area, began a volume at 02:02 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 00:00Z, 2.0 hours before the alert went out and 77 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: 1047 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1205 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.4

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
Mar 25, 8:22 PM EDT	Mesoscale Discussion	SPC	Brown, Calumet, Menominee, Oconto, Outagamie, Shawano and 3 more	53 min

Nearby

Mesoscale Discussions in Wisconsin, 2007 Mesoscale Discussions in Michigan, 2007 Every mesoscale discussion in 2007

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.