Alert archive / Wisconsin / Mesoscale Discussions in 2022

Mesoscale Discussion 699

May 9, 2022Gogebic County, Michigan; Iron County, Sawyer County, Vilas County, Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 9, 2022, 11:58 AM CDT for Gogebic County, Michigan; Iron County, Sawyer County, Vilas County, Wisconsin. It was in force for 62 min.

The area

The outline as issued.

The facts

Issued: May 9, 2022, 11:58 AM CDT (16:58 UTC)
Expired: May 9, 2022, 1:00 PM CDT
In force: 62 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 193

Counties Gogebic County, MI, Iron County, WI, Sawyer County, WI, Vilas County, WI

The radar

The Duluth radar (KDLH), 175 km from the middle of the area, began a volume at 17:01 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, 5.0 hours before the alert went out and 247 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: 1334 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 220 m²/s²
0-3 km storm-relative helicity: 321 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 9, 9:16 AM CDT	Mesoscale Discussion	SPC	Barron, Burnett, Dunn, Polk, Rusk, Saint Croix and 2 more	59 min
May 9, 9:28 AM CDT	Severe Thunderstorm Watch	SPC	Ashland, Barron, Burnett, Chippewa, Dunn, Iron and 6 more	3 hr
May 9, 1:54 PM CDT	Mesoscale Discussion	SPC	Pierce	96 min
May 9, 2:50 PM CDT	Tornado Watch	SPC	Barron, Buffalo, Burnett, Chippewa, Dunn, Eau Claire and 8 more	7 hr
May 9, 5:21 PM CDT	Mesoscale Discussion	SPC	Burnett, Dunn, Pierce, Polk, Saint Croix	84 min
May 9, 6:32 PM CDT	Mesoscale Discussion	SPC	Crawford, Grant	88 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.