Alert archive / North Dakota / Mesoscale Discussions in 2014

Mesoscale Discussion 1027

June 16, 2014Dawson County, Richland County, Montana; 12 counties in North Dakota; Perkins County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2014, 6:49 PM MDT for Dawson County, Richland County, Montana; 12 counties in North Dakota; Perkins County, South Dakota. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Jun 16, 2014, 6:49 PM MDT (00:49 UTC)
Expired: Jun 16, 2014, 8:15 PM MDT
In force: 86 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Dawson County, MT, Richland County, MT, Adams County, ND, Billings County, ND, Dunn County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, McKenzie County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Sioux County, ND, Stark County, ND, Perkins County, SD

The radar

The Bismarck radar (KBIS), 177 km from the middle of the area, began a volume at 00:52 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.8 hours before the alert went out and 182 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: 207 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 1837 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 5:04 AM MDT	Mesoscale Discussion	SPC	Garfield, Prairie	86 min
Jun 17, 11:40 AM MDT	Mesoscale Discussion	SPC	Carter, Custer, Dawson, Fallon, Garfield, Powder River and 2 more	2 hr
Jun 17, 12:31 PM MDT	Tornado Watch	SPC	Carter, Custer, Dawson, Fallon, Garfield, McCone and 3 more	7 hr
Jun 17, 2:22 PM MDT	Mesoscale Discussion	SPC	Carter, Custer, Dawson, Fallon, McCone, Prairie and 2 more	113 min
Jun 16, 6:47 PM MDT	Mesoscale Discussion	SPC	Bon Homme, Charles Mix, Davison, Douglas, Gregory, Hanson and 8 more	58 min
Jun 16, 7:37 PM MDT	Mesoscale Discussion	SPC	Bon Homme, Charles Mix, Davison, Douglas, Gregory, Hanson and 8 more	83 min
Jun 16, 8:56 PM MDT	Severe Thunderstorm Watch	SPC	Union	5 hr
Jun 16, 10:11 PM MDT	Mesoscale Discussion	SPC	Union	64 min
Jun 17, 3:53 PM MDT	Tornado Watch	SPC	Mellette, Todd, Tripp	6 hr
Jun 17, 4:12 PM MDT	Mesoscale Discussion	SPC	Bon Homme, Charles Mix, Clay, Davison, Douglas, Hanson and 7 more	2 hr
Jun 17, 5:02 PM MDT	Mesoscale Discussion	SPC	Bennett, Butte, Harding, Jackson, Meade, Oglala Lakota and 1 more	88 min
Jun 17, 5:48 PM MDT	Tornado Watch	SPC	Bon Homme, Clay, Hanson, Hutchinson, Lake, Lincoln and 7 more	6 hr

Nearby

Mesoscale Discussions in North Dakota, 2014 Mesoscale Discussions in Montana, 2014 Mesoscale Discussions in South Dakota, 2014 Every mesoscale discussion in 2014

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.