Alert archive / North Dakota / Mesoscale Discussions in 2018

Mesoscale Discussion 732

June 14, 201815 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 14, 2018, 2:54 PM CDT for 15 counties in North Dakota. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Jun 14, 2018, 2:54 PM CDT (19:54 UTC)
Expired: Jun 14, 2018, 4:30 PM CDT
In force: 96 min
Issued by: the Storm Prediction Center
Chance of a watch: 95%

Counties Benson County, ND, Bottineau County, ND, Burke County, ND, Divide County, ND, McHenry County, ND, McKenzie County, ND, McLean County, ND, Mountrail County, ND, Pierce County, ND, Ramsey County, ND, Renville County, ND, Rolette County, ND, Towner County, ND, Ward County, ND, Williams County, ND

The radar

The Minot AFB radar (KMBX), 55 km from the middle of the area, began a volume at 19:58 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 177Jun 14, 3:25 PM CDT

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 7.9 hours before the alert went out and 175 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: 1545 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 14, 2:58 PM CDT	Mesoscale Discussion	SPC	Adams, Grant, Hettinger	62 min
Jun 14, 3:40 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Bowman, Burleigh, Emmons, Grant, Hettinger and 7 more	8 hr
Jun 14, 3:40 PM CDT	Tornado Watch	SPC	Bottineau, Burke, Divide, Dunn, McHenry, McKenzie and 10 more	7 hr
Jun 14, 5:27 PM CDT	Mesoscale Discussion	SPC	Cavalier, Pembina, Towner	93 min
Jun 14, 6:15 PM CDT	Mesoscale Discussion	SPC	Adams, Bowman, Burleigh, Emmons, Grant, Hettinger and 4 more	90 min
Jun 14, 6:41 PM CDT	Mesoscale Discussion	SPC	Billings, Bottineau, Burke, Divide, Dunn, McHenry and 11 more	94 min

Nearby

Mesoscale Discussions in North Dakota, 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.