Alert archive / North Dakota / Mesoscale Discussions in 2020

Mesoscale Discussion 877

June 7, 2020Kittson County, Marshall County, Minnesota; 20 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2020, 8:42 PM CDT for Kittson County, Marshall County, Minnesota; 20 counties in North Dakota. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued: Jun 7, 2020, 8:42 PM CDT (01:42 UTC)
Expired: Jun 7, 2020, 10:15 PM CDT
In force: 93 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 267

All 22 counties

Kittson County, MN, Marshall County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 83 km from the middle of the area, began a volume at 01:43 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 269Jun 7, 9:45 PM CDT

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.7 hours before the alert went out and 188 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: 348 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 2686 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.9

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, 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
Jun 8, 6:50 PM CDT	Mesoscale Discussion	SPC	Becker, Clay, Clearwater, Kittson, Mahnomen, Marshall and 6 more	115 min

Nearby

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