Alert archive / South Dakota / Mesoscale Discussions in 2005

Mesoscale Discussion 2132

September 2, 20054 counties in North Dakota; 20 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Sep 2, 2005, 6:25 PM MDT for 4 counties in North Dakota; 20 counties in South Dakota. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued: Sep 2, 2005, 6:25 PM MDT (00:25 UTC)
Expired: Sep 2, 2005, 7:30 PM MDT
In force: 65 min
Issued by: the Storm Prediction Center

All 24 counties

Adams County, ND, Grant County, ND, Hettinger County, ND, Sioux County, ND, Brule County, SD, Buffalo County, SD, Butte County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Faulk County, SD, Haakon County, SD, Hand County, SD, Harding County, SD, Hughes County, SD, Hyde County, SD, Jones County, SD, Lyman County, SD, Perkins County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 152 km from the middle of the area, began a volume at 00:26 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, 0.4 hours before the alert went out and 203 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: 2213 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 290 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
Sep 3, 3:00 AM MDT	Mesoscale Discussion	SPC	Barnes, Cass, Dickey, Eddy, Foster, Griggs and 12 more	3 hr
Sep 3, 12:40 PM MDT	Mesoscale Discussion	SPC	Richland	95 min

Nearby

Mesoscale Discussions in South Dakota, 2005 Mesoscale Discussions in North Dakota, 2005 Every mesoscale discussion in 2005

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.