Alert archive / North Dakota / Mesoscale Discussions in 2018

Mesoscale Discussion 695

June 10, 20184 states

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2018, 1:15 PM MDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 10, 2018, 1:15 PM MDT (19:15 UTC)
Expired: Jun 10, 2018, 3:15 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 95%

All 32 counties

Carter County, MT, Adams County, ND, Billings County, ND, Bottineau County, ND, Bowman County, ND, Burke County, ND, Burleigh County, ND, Dunn County, ND, Grant County, ND, Hettinger County, ND, McHenry County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Renville County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Ward County, ND, Butte County, SD, Corson County, SD, Dewey County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Perkins County, SD, Ziebach County, SD, Campbell County, WY, Crook County, WY

The radar

The Rapid City radar (KUDX), 214 km from the middle of the area, began a volume at 19:17 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.

The nearest sounding before it

Rapid City, SD (KRAP), launched 12:00Z, 7.3 hours before the alert went out and 219 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: 1353 J/kg
Mixed-layer CIN: -431 J/kg
Mixed-layer LCL: 1320 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 164 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 9, 6:35 PM MDT	Mesoscale Discussion	SPC	Carter, Custer, Fallon, Powder River, Prairie	85 min
Jun 9, 7:11 PM MDT	Mesoscale Discussion	SPC	Blaine, Chouteau, Fergus, Hill, Judith Basin	94 min
Jun 10, 2:37 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Billings, Bottineau, Bowman, Burke, Burleigh and 19 more	7 hr
Jun 10, 5:15 PM MDT	Mesoscale Discussion	SPC	Adams, Bottineau, Burke, Burleigh, Dunn, Emmons and 13 more	2 hr
Jun 10, 2:52 PM MDT	Tornado Watch	SPC	Butte, Corson, Dewey, Haakon, Harding, Lawrence and 5 more	7 hr
Jun 10, 5:36 PM MDT	Mesoscale Discussion	SPC	Butte, Corson, Custer, Dewey, Haakon, Harding and 11 more	114 min

Nearby

Mesoscale Discussions in North Dakota, 2018 Mesoscale Discussions in South Dakota, 2018 Mesoscale Discussions in Wyoming, 2018 Every mesoscale discussion in 2018

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.