Alert archive / Wisconsin / Mesoscale Discussions in 2022

Mesoscale Discussion 960

May 29, 2022Allamakee County, Iowa; Houston County, Minnesota; 11 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 29, 2022, 10:02 AM CDT for Allamakee County, Iowa; Houston County, Minnesota; 11 counties in Wisconsin. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: May 29, 2022, 10:02 AM CDT (15:02 UTC)
Expired: May 29, 2022, 11:30 AM CDT
In force: 88 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 286

Counties Allamakee County, IA, Houston County, MN, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Jackson County, WI, La Crosse County, WI, Monroe County, WI, Pepin County, WI, Trempealeau County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 61 km from the middle of the area, began a volume at 15:02 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, 3.0 hours before the alert went out and 186 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: 375 J/kg
Mixed-layer CIN: -480 J/kg
Mixed-layer LCL: 924 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 226 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 29, 3:02 AM CDT	Severe Thunderstorm Watch	SPC	Lyon, Osceola	5 hr
May 29, 4:16 AM CDT	Mesoscale Discussion	SPC	Lyon, Osceola	89 min
May 29, 5:54 AM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 25 more	2 hr
May 29, 5:10 AM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Carver, Faribault, Hennepin, Le Sueur and 9 more	2 hr
May 29, 5:41 AM CDT	Severe Thunderstorm Watch	SPC	Anoka, Blue Earth, Brown, Carver, Chisago, Dakota and 23 more	5 hr
May 29, 7:39 AM CDT	Mesoscale Discussion	SPC	Blue Earth, Carver, Dakota, Dodge, Goodhue, Hennepin and 10 more	96 min
May 29, 3:14 PM CDT	Mesoscale Discussion	SPC	Becker, Clay, Mahnomen, Marshall, Norman, Otter Tail and 5 more	91 min
May 29, 3:41 PM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Clay, Clearwater, Grant, Hubbard and 12 more	6 hr
May 29, 5:43 PM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Clay, Clearwater, Hubbard, Kittson and 12 more	2 hr

Nearby

Mesoscale Discussions in Wisconsin, 2022 Mesoscale Discussions in Iowa, 2022 Mesoscale Discussions in Minnesota, 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.