Alert archive / Wisconsin / Mesoscale Discussions in 2022

Mesoscale Discussion 832

May 19, 20224 counties in Iowa; 20 counties in Minnesota; 25 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 19, 2022, 4:54 PM CDT for 4 counties in Iowa; 20 counties in Minnesota; 25 counties in Wisconsin. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 19, 2022, 4:54 PM CDT (21:54 UTC)
Expired
May 19, 2022, 7:00 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 246
All 49 counties

Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Worth County, IA, Blue Earth County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Houston County, MN, Le Sueur County, MN, Mower County, MN, Olmsted County, MN, Ramsey County, MN, Rice County, MN, Scott County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Winona County, MN, Adams County, WI, Barron County, WI, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Marathon County, WI, Marquette County, WI, Monroe County, WI, Pepin County, WI, Pierce County, WI, Portage County, WI, Richland County, WI, Rusk County, WI, Saint Croix County, WI, Sauk County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Waushara County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 65 km from the middle of the area, began a volume at 21:58 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, 9.9 hours before the alert went out and 165 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2022-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2022-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1537 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
68 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.

IssuedProductOfficeCountiesLasted
May 19, 11:36 AM CDTMesoscale DiscussionSPCAllamakee, Cerro Gordo, Chickasaw, Floyd, Howard, Mitchell and 3 more84 min
May 19, 1:36 PM CDTMesoscale DiscussionSPCCerro Gordo, Dickinson, Emmet, Floyd, Franklin, Hancock and 7 more114 min
May 19, 3:11 PM CDTTornado WatchSPCEmmet, Kossuth, Mitchell, Winnebago, Worth7 hr
May 19, 3:20 PM CDTSevere Thunderstorm WatchSPCAnoka, Carver, Chisago, Dakota, Hennepin, Isanti and 6 more7 hr
May 18, 9:13 PM CDTMesoscale DiscussionSPCAdams, Clark, Eau Claire, Jackson, Juneau, Portage and 2 more62 min

Nearby

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