Alert archive / Wisconsin / Mesoscale Discussions in 2018

Mesoscale Discussion 742

June 15, 2018Gogebic County, Michigan; Cook County, Lake County, Minnesota; 12 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jun 15, 2018, 2:41 AM CDT for Gogebic County, Michigan; Cook County, Lake County, Minnesota; 12 counties in Wisconsin. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Jun 15, 2018, 2:41 AM CDT (07:41 UTC)
Expired: Jun 15, 2018, 5:15 AM CDT
In force: 3 hr
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Gogebic County, MI, Cook County, MN, Lake County, MN, Ashland County, WI, Bayfield County, WI, Clark County, WI, Iron County, WI, Lincoln County, WI, Marathon County, WI, Oneida County, WI, Price County, WI, Sawyer County, WI, Taylor County, WI, Vilas County, WI, Wood County, WI

The radar

The Duluth radar (KDLH), 125 km from the middle of the area, began a volume at 07:43 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

International Fa, MN (KINL), launched 00:00Z, 7.7 hours before the alert went out and 296 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: 2460 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 184 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 15, 1:33 AM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Clay, Clearwater, Kittson, Koochiching and 8 more	87 min
Jun 15, 11:26 AM CDT	Mesoscale Discussion	SPC	Aitkin, Benton, Carlton, Crow Wing, Kanabec, Mille Lacs and 2 more	64 min
Jun 15, 3:56 PM CDT	Mesoscale Discussion	SPC	Dodge, Faribault, Fillmore, Freeborn, Goodhue, Houston and 7 more	2 hr
Jun 15, 6:01 PM CDT	Mesoscale Discussion	SPC	Jackson, Juneau, Monroe, Trempealeau	89 min

Nearby

Mesoscale Discussions in Wisconsin, 2018 Mesoscale Discussions in Minnesota, 2018 Mesoscale Discussions in Michigan, 2018 Every mesoscale discussion in 2018

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.