Alert archive / North Dakota / Mesoscale Discussions in 2007

Mesoscale Discussion 714

May 5, 200716 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at May 5, 2007, 7:58 PM CDT for 16 counties in North Dakota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 5, 2007, 7:58 PM CDT (00:58 UTC)
Expired: May 5, 2007, 10:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Barnes County, ND, Burleigh County, ND, Cass 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, Morton County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Stutsman County, ND

The radar

The Bismarck radar (KBIS), 118 km from the middle of the area, began a volume at 01:01 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, 1.0 hours before the alert went out and 113 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: 21 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 498 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 296 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
May 6, 12:07 PM CDT	Mesoscale Discussion	SPC	Adams, Burleigh, Dunn, Grant, Hettinger, McHenry and 8 more	113 min
May 6, 1:07 PM CDT	Tornado Watch	SPC	Barnes, Benson, Burleigh, Cavalier, Eddy, Emmons and 22 more	6 hr
May 6, 6:04 PM CDT	Mesoscale Discussion	SPC	Benson, Burleigh, Eddy, Foster, Kidder, Logan and 10 more	56 min

Nearby

Mesoscale Discussions in North Dakota, 2007 Every mesoscale discussion in 2007

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.