Alert archive / North Dakota / Mesoscale Discussions in 2014

Mesoscale Discussion 1068

June 18, 201413 counties in North Dakota; 6 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2014, 5:23 PM CDT for 13 counties in North Dakota; 6 counties in South Dakota. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jun 18, 2014, 5:23 PM CDT (22:23 UTC)
Expired: Jun 18, 2014, 7:00 PM CDT
In force: 97 min
Issued by: the Storm Prediction Center

Counties Barnes County, ND, Burleigh County, ND, Dickey County, ND, Emmons County, ND, Foster County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Sargent County, ND, Stutsman County, ND, Brown County, SD, Campbell County, SD, Edmunds County, SD, Marshall County, SD, McPherson County, SD, Walworth County, SD

The radar

The Bismarck radar (KBIS), 113 km from the middle of the area, began a volume at 22:25 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.

Tornado Watch 328Jun 18, 7:40 PM CDT

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.4 hours before the alert went out and 109 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: 246 J/kg
Mixed-layer CIN: -197 J/kg
Mixed-layer LCL: 802 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: -28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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 18, 1:19 AM CDT	Mesoscale Discussion	SPC	Adams, Grant, Sioux	56 min
Jun 18, 1:13 PM CDT	Mesoscale Discussion	SPC	Emmons, Grant, Kidder, Logan, McIntosh, Morton and 1 more	92 min
Jun 18, 1:28 PM CDT	Tornado Watch	SPC	Adams, Burleigh, Emmons, Grant, Hettinger, Kidder and 7 more	9 hr
Jun 17, 7:33 PM CDT	Mesoscale Discussion	SPC	Butte, Harding	27 min
Jun 17, 8:58 PM CDT	Severe Thunderstorm Watch	SPC	Butte, Custer, Fall River, Haakon, Harding, Lawrence and 4 more	5 hr
Jun 17, 10:18 PM CDT	Mesoscale Discussion	SPC	Bon Homme, Clay, Hanson, Hutchinson, Lake, Lincoln and 7 more	57 min
Jun 17, 11:01 PM CDT	Mesoscale Discussion	SPC	Clay, Lincoln, McCook, Minnehaha, Turner, Union and 1 more	29 min
Jun 17, 11:23 PM CDT	Mesoscale Discussion	SPC	Clay, Lake, Lincoln, Minnehaha, Moody, Union	37 min
Jun 17, 11:39 PM CDT	Tornado Watch	SPC	Clay, Hanson, Hutchinson, Lake, Lincoln, McCook and 5 more	5 hr
Jun 18, 1:52 AM CDT	Mesoscale Discussion	SPC	Clay, Lincoln, Union	83 min
Jun 18, 4:45 AM CDT	Mesoscale Discussion	SPC	Campbell, Corson, Dewey, Haakon, Hughes, Hyde and 10 more	90 min
Jun 18, 3:29 PM CDT	Mesoscale Discussion	SPC	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 23 more	91 min
Jun 18, 6:23 PM CDT	Tornado Watch	SPC	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	5 hr

Nearby

Mesoscale Discussions in North Dakota, 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.