Alert archive / North Dakota / Mesoscale Discussions in 2007

Mesoscale Discussion 1282

June 25, 20074 states

The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2007, 7:38 PM MDT for 4 states. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jun 25, 2007, 7:38 PM MDT (01:38 UTC)
Expired: Jun 25, 2007, 9:15 PM MDT
In force: 97 min
Issued by: the Storm Prediction Center

Counties Carter County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Dunn County, ND, Hettinger County, ND, Mercer County, ND, Slope County, ND, Stark County, ND, Butte County, SD, Harding County, SD, Perkins County, SD, Campbell County, WY, Crook County, WY

The radar

The Rapid City radar (KUDX), 177 km from the middle of the area, began a volume at 01:40 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, 1.6 hours before the alert went out and 262 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: 2416 J/kg
Mixed-layer CIN: -265 J/kg
Mixed-layer LCL: 1640 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: -26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 25, 9:59 PM MDT	Mesoscale Discussion	SPC	Barnes, Dickey, Foster, Griggs, LaMoure, Logan and 2 more	91 min
Jun 25, 6:24 PM MDT	Mesoscale Discussion	SPC	Bennett, Jackson, Jones, Mellette, Stanley, Todd	96 min

Nearby

Mesoscale Discussions in North Dakota, 2007 Mesoscale Discussions in South Dakota, 2007 Mesoscale Discussions in Wyoming, 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.