Alert archive / South Dakota / Mesoscale Discussions in 2007

Mesoscale Discussion 1283

June 25, 20078 counties in North Dakota; 21 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2007, 10:59 PM CDT for 8 counties in North Dakota; 21 counties in South Dakota. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: Jun 25, 2007, 10:59 PM CDT (03:59 UTC)
Expired: Jun 26, 2007, 12:30 AM CDT
In force: 91 min
Issued by: the Storm Prediction Center

All 29 counties

Barnes County, ND, Dickey County, ND, Foster County, ND, Griggs County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Stutsman County, ND, Butte County, SD, Campbell County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Haakon County, SD, Hughes County, SD, Hyde County, SD, Jackson County, SD, Jones County, SD, Lawrence County, SD, Lyman County, SD, McPherson County, SD, Meade County, SD, Mellette County, SD, Pennington County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD, Ziebach County, SD

The radar

The Bismarck radar (KBIS), 154 km from the middle of the area, began a volume at 04:00 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, 4.0 hours before the alert went out and 154 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, 8:38 PM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bowman, Dunn, Hettinger, Mercer and 2 more	97 min
Jun 25, 7:24 PM CDT	Mesoscale Discussion	SPC	Bennett, Jackson, Jones, Mellette, Stanley, Todd	96 min

Nearby

Mesoscale Discussions in South Dakota, 2007 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.