Alert archive / Michigan / Mesoscale Discussions in 2013

Mesoscale Discussion 1107

June 17, 201320 counties in Michigan; 15 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2013, 2:03 PM EDT for 20 counties in Michigan; 15 counties in Wisconsin. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: Jun 17, 2013, 2:03 PM EDT (18:03 UTC)
Expired: Jun 17, 2013, 3:30 PM EDT
In force: 87 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 35 counties

Bay County, MI, Clinton County, MI, Genesee County, MI, Gratiot County, MI, Ionia County, MI, Isabella County, MI, Kent County, MI, Lake County, MI, Lapeer County, MI, Mason County, MI, Mecosta County, MI, Midland County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Osceola County, MI, Saginaw County, MI, Shiawassee County, MI, Tuscola County, MI, Brown County, WI, Calumet County, WI, Clark County, WI, Fond du Lac County, WI, Manitowoc County, WI, Marathon County, WI, Outagamie County, WI, Ozaukee County, WI, Portage County, WI, Shawano County, WI, Sheboygan County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The Green Bay radar (KGRB), 136 km from the middle of the area, began a volume at 18:06 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, 6.1 hours before the alert went out and 134 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: 2 J/kg
Mixed-layer CIN: -352 J/kg
Mixed-layer LCL: 1774 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 201 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 Michigan, 2013 Mesoscale Discussions in Wisconsin, 2013 Every mesoscale discussion in 2013

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.