Alert archive / Minnesota / Mesoscale Discussions in 2020

Mesoscale Discussion 292

April 7, 202011 counties in Minnesota; Richland County, North Dakota; Marshall County, Roberts County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Apr 7, 2020, 1:56 AM CDT for 11 counties in Minnesota; Richland County, North Dakota; Marshall County, Roberts County, South Dakota. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Apr 7, 2020, 1:56 AM CDT (06:56 UTC)
Expired
Apr 7, 2020, 4:30 AM CDT
In force
3 hr
Issued by
the Storm Prediction Center
Chance of a watch
20%

Counties Benton County, MN, Crow Wing County, MN, Douglas County, MN, Grant County, MN, Mille Lacs County, MN, Morrison County, MN, Otter Tail County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Richland County, ND, Marshall County, SD, Roberts County, SD

The radar

The Minneapolis radar (KMPX), 196 km from the middle of the area, began a volume at 06:56 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 00:00Z, 6.9 hours before the alert went out and 193 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 00:00Z on 2020-04-07Temperature 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 00:00Z on 2020-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 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
880 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
166 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
Apr 6, 7:53 PM CDTMesoscale DiscussionSPCBig Stone, Grant, Traverse, Wilkin3 hr

Nearby

Mesoscale Discussions in Minnesota, 2020Mesoscale Discussions in South Dakota, 2020Mesoscale Discussions in North Dakota, 2020Every mesoscale discussion in 2020

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.