Alert archive / Wisconsin / Mesoscale Discussions in 2022

Mesoscale Discussion 751

May 13, 20225 counties in Michigan; 24 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 13, 2022, 5:47 PM EDT for 5 counties in Michigan; 24 counties in Wisconsin. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 13, 2022, 5:47 PM EDT (21:47 UTC)
Expired: May 13, 2022, 8:15 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

All 29 counties

Baraga County, MI, Dickinson County, MI, Iron County, MI, Marquette County, MI, Menominee County, MI, Brown County, WI, Calumet County, WI, Columbia County, WI, Dane County, WI, Dodge County, WI, Florence County, WI, Fond du Lac County, WI, Forest County, WI, Green Lake County, WI, Jefferson County, WI, Langlade County, WI, Marinette County, WI, Marquette County, WI, Menominee County, WI, Oconto County, WI, Outagamie County, WI, Rock County, WI, Shawano County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI

The radar

The Green Bay radar (KGRB), 40 km from the middle of the area, began a volume at 21:47 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, 9.8 hours before the alert went out and 43 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: 266 J/kg
Mixed-layer CIN: -346 J/kg
Mixed-layer LCL: 1302 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 94 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
May 12, 8:11 PM EDT	Severe Thunderstorm Watch	SPC	Burnett	6 hr
May 12, 9:40 PM EDT	Mesoscale Discussion	SPC	Barron, Burnett, Douglas, Polk, Washburn	95 min
May 13, 3:53 PM EDT	Mesoscale Discussion	SPC	Green	97 min

Nearby

Mesoscale Discussions in Wisconsin, 2022 Mesoscale Discussions in Michigan, 2022 Every mesoscale discussion in 2022

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.