Alert archive / South Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 1295

June 15, 20044 states

The Storm Prediction Center issued this mesoscale discussion at Jun 15, 2004, 9:15 PM CDT for 4 states. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: Jun 15, 2004, 9:15 PM CDT (02:15 UTC)
Expired: Jun 15, 2004, 10:15 PM CDT
In force: 60 min
Issued by: the Storm Prediction Center

All 41 counties

Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Ida County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sac County, IA, Sioux County, IA, Woodbury County, IA, Cottonwood County, MN, Jackson County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Rock County, MN, Yellow Medicine County, MN, Cedar County, NE, Dakota County, NE, Dixon County, NE, Knox County, NE, Pierce County, NE, Wayne County, NE, Bon Homme County, SD, Brookings County, SD, Clay County, SD, Hanson County, SD, Hutchinson County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Minnehaha County, SD, Moody County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 38 km from the middle of the area, began a volume at 02:16 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

Aberdeen, SD (KABR), launched 00:00Z, 2.3 hours before the alert went out and 227 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: 781 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 144 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
Jun 15, 7:07 PM CDT	Mesoscale Discussion	SPC	Cherokee, Clay, Dickinson, Lyon, O'Brien, Osceola and 3 more	53 min
Jun 16, 2:18 AM CDT	Mesoscale Discussion	SPC	Buena Vista, Cherokee, Clay, Crawford, Dickinson, Fremont and 13 more	57 min
Jun 16, 11:10 AM CDT	Mesoscale Discussion	SPC	Adair, Adams, Allamakee, Audubon, Benton, Black Hawk and 63 more	2 hr
Jun 16, 2:05 PM CDT	Severe Thunderstorm Watch	SPC	Appanoose, Benton, Black Hawk, Boone, Bremer, Buchanan and 45 more	5 hr
Jun 16, 5:01 PM CDT	Mesoscale Discussion	SPC	Allamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 42 more	89 min
Jun 15, 10:39 PM CDT	Mesoscale Discussion	SPC	Adams, Blaine, Buffalo, Custer, Dawson, Franklin and 17 more	96 min
Jun 15, 11:55 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Buffalo, Butler, Clay, Colfax, Fillmore and 19 more	3 hr
Jun 16, 12:40 PM CDT	Mesoscale Discussion	SPC	Richardson	95 min

Nearby

Mesoscale Discussions in South Dakota, 2004 Mesoscale Discussions in Iowa, 2004 Mesoscale Discussions in Minnesota, 2004 Every mesoscale discussion in 2004

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.