Alert archive / North Dakota / Mesoscale Discussions in 2014

Mesoscale Discussion 1287

July 6, 201413 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2014, 7:18 PM CDT for 13 counties in North Dakota. It was in force for 57 min.

The area

The outline as issued.

The facts

Issued: Jul 6, 2014, 7:18 PM CDT (00:18 UTC)
Expired: Jul 6, 2014, 8:15 PM CDT
In force: 57 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

Counties Burke County, ND, Burleigh County, ND, Divide County, ND, Dunn County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Sheridan County, ND, Ward County, ND, Williams County, ND

The radar

The Minot AFB radar (KMBX), 114 km from the middle of the area, began a volume at 00:21 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 395Jul 6, 7:35 PM CDT

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.3 hours before the alert went out and 159 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: 2068 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jul 6, 7:36 PM CDT	Severe Thunderstorm Watch	SPC	Burleigh, Dunn, Emmons, Grant, Logan, McIntosh and 9 more	4 hr
Jul 6, 9:50 PM CDT	Mesoscale Discussion	SPC	Burleigh, Emmons, McLean, Mercer, Morton, Oliver and 1 more	55 min

Nearby

Mesoscale Discussions in North 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.