Alert archive / Minnesota / Mesoscale Discussions in 2020

Mesoscale Discussion 884

June 8, 202012 counties in Minnesota; 6 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 8, 2020, 6:50 PM CDT for 12 counties in Minnesota; 6 counties in North Dakota. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued: Jun 8, 2020, 6:50 PM CDT (23:50 UTC)
Expired: Jun 8, 2020, 8:45 PM CDT
In force: 115 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 270...271

Counties Becker County, MN, Clay County, MN, Clearwater County, MN, Kittson County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Wilkin County, MN, Cass County, ND, Grand Forks County, ND, Ransom County, ND, Richland County, ND, Steele County, ND, Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 74 km from the middle of the area, began a volume at 23:53 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

International Fa, MN (KINL), launched 12:00Z, 11.8 hours before the alert went out and 248 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: 782 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 113 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
Jun 7, 8:42 PM CDT	Mesoscale Discussion	SPC	Kittson, Marshall	93 min
Jun 7, 9:46 PM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Clay, Clearwater, Kittson, Lake of the Woods and 8 more	4 hr
Jun 7, 11:33 PM CDT	Mesoscale Discussion	SPC	Clay, Kittson, Lake of the Woods, Mahnomen, Marshall, Norman and 5 more	87 min
Jun 8, 2:10 PM CDT	Mesoscale Discussion	SPC	Clay, Kittson, Marshall, Norman, Pennington, Polk and 2 more	2 hr
Jun 8, 3:00 PM CDT	Severe Thunderstorm Watch	SPC	Beltrami, Clearwater, Kittson, Lake of the Woods, Marshall, Pennington and 3 more	8 hr
Jun 8, 4:01 PM CDT	Severe Thunderstorm Watch	SPC	Clay, Mahnomen, Norman, Wilkin	7 hr
Jun 8, 5:56 PM CDT	Severe Thunderstorm Watch	SPC	Big Stone, Traverse	9 hr

Nearby

Mesoscale Discussions in Minnesota, 2020 Mesoscale Discussions in North Dakota, 2020 Every 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.