Alert archive / South Dakota / Mesoscale Discussions in 2003

Mesoscale Discussion 2251

August 25, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Aug 25, 2003, 6:21 PM CDT for 4 states. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued: Aug 25, 2003, 6:21 PM CDT (23:21 UTC)
Expired: Aug 25, 2003, 7:15 PM CDT
In force: 54 min
Issued by: the Storm Prediction Center

All 44 counties

Big Stone County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Traverse County, MN, Wilkin County, MN, Yellow Medicine County, MN, Dickey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Keya Paha County, NE, Aurora County, SD, Beadle County, SD, Brookings County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Douglas County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lyman County, SD, Marshall County, SD, McCook County, SD, Miner County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Todd County, SD, Tripp County, SD

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.4 hours before the alert went out and 58 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: 661 J/kg
Mixed-layer CIN: -377 J/kg
Mixed-layer LCL: 1691 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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
Aug 24, 8:16 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Cottonwood, Faribault, Freeborn, Jackson, Martin and 8 more	119 min
Aug 25, 11:33 AM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Benton, Carlton, Chisago, Crow Wing and 13 more	117 min
Aug 25, 4:43 PM CDT	Mesoscale Discussion	SPC	Beltrami, Clearwater, Itasca, Kittson, Koochiching, Lake of the Woods and 5 more	62 min
Aug 25, 5:00 PM CDT	Tornado Watch	SPC	Beltrami, Clearwater, Kittson, Lake of the Woods, Marshall, Pennington and 3 more	5 hr
Aug 25, 5:20 PM CDT	Severe Thunderstorm Watch	SPC	Fillmore, Freeborn, Houston, Mower	6 hr
Aug 25, 3:44 PM CDT	Mesoscale Discussion	SPC	Antelope, Boone, Custer, Dawson, Frontier, Garfield and 11 more	2 hr
Aug 25, 3:53 AM CDT	Mesoscale Discussion	SPC	Barnes, Benson, Cass, Cavalier, Eddy, Foster and 12 more	2 hr

Nearby

Mesoscale Discussions in South Dakota, 2003 Mesoscale Discussions in Minnesota, 2003 Mesoscale Discussions in North Dakota, 2003 Every mesoscale discussion in 2003

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.