Alert archive / Wisconsin / Mesoscale Discussions in 2008

Mesoscale Discussion 947

May 17, 200815 counties in Michigan; Pine County, Minnesota; 29 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 17, 2008, 2:28 PM EDT for 15 counties in Michigan; Pine County, Minnesota; 29 counties in Wisconsin. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: May 17, 2008, 2:28 PM EDT (18:28 UTC)
Expired: May 17, 2008, 4:00 PM EDT
In force: 92 min
Issued by: the Storm Prediction Center

All 45 counties

Antrim County, MI, Benzie County, MI, Charlevoix County, MI, Cheboygan County, MI, Crawford County, MI, Emmet County, MI, Grand Traverse County, MI, Kalkaska County, MI, Leelanau County, MI, Manistee County, MI, Menominee County, MI, Montmorency County, MI, Oscoda County, MI, Otsego County, MI, Wexford County, MI, Pine County, MN, Barron County, WI, Brown County, WI, Burnett County, WI, Calumet County, WI, Chippewa County, WI, Clark County, WI, Door County, WI, Douglas County, WI, Forest County, WI, Kewaunee County, WI, Langlade County, WI, Lincoln County, WI, Manitowoc County, WI, Marathon County, WI, Marinette County, WI, Menominee County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Portage County, WI, Price County, WI, Rusk County, WI, Sawyer County, WI, Shawano County, WI, Taylor County, WI, Vilas County, WI, Washburn County, WI, Waupaca County, WI, Wood County, WI

The radar

The Green Bay radar (KGRB), 116 km from the middle of the area, began a volume at 18:29 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, 6.5 hours before the alert went out and 419 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: 3112 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: -75 m²/s²
0-3 km storm-relative helicity: 122 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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Nearby

Mesoscale Discussions in Wisconsin, 2008 Mesoscale Discussions in Michigan, 2008 Mesoscale Discussions in Minnesota, 2008 Every 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.