Alert archive / South Dakota / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 431

June 10, 2004Lincoln County, Pipestone County, Rock County, Minnesota; 34 counties in Nebraska; 36 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 10, 2004, 8:50 PM CDT for Lincoln County, Pipestone County, Rock County, Minnesota; 34 counties in Nebraska; 36 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jun 10, 2004, 8:50 PM CDT (01:50 UTC)
Expired: Jun 11, 2004, 2:00 AM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 73 counties

Lincoln County, MN, Pipestone County, MN, Rock County, MN, Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Butler County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Garfield County, NE, Greeley County, NE, Holt County, NE, Howard County, NE, Keya Paha County, NE, Knox County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Rock County, NE, Saunders County, NE, Sherman County, NE, Stanton County, NE, Thurston County, NE, Valley County, NE, Wayne County, NE, Wheeler County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Clay County, SD, Codington County, SD, Davison County, SD, Deuel County, SD, Douglas County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, Lyman County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Spink County, SD, Sully County, SD, Tripp County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The North Platte radar (KLNX), 177 km from the middle of the area, began a volume at 01:51 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.

Warnings issued inside it

16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 10, 9:16 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Garfield, Loup	44 min
Jun 10, 9:20 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	55 min
Jun 10, 9:23 PM CDT	Severe Thunderstorm Warning	GID	Valley	52 min
Jun 10, 10:16 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix	29 min
Jun 10, 10:26 PM CDT	Severe Thunderstorm Warning	GID	Sherman	64 min
Jun 10, 10:58 PM CDT	Severe Thunderstorm Warning	FSD	Davison	32 min
Jun 10, 11:00 PM CDT	Severe Thunderstorm Warning	GID	Hall, Howard	60 min
Jun 10, 11:17 PM CDT	Severe Thunderstorm Warning	GID	Greeley	58 min
Jun 10, 11:18 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson	27 min
Jun 10, 11:22 PM CDT	Severe Thunderstorm Warning	GID	Merrick, Nance	53 min
Jun 10, 11:34 PM CDT	Severe Thunderstorm Warning	OAX	Boone	41 min
Jun 10, 11:40 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook	35 min
Jun 11, 12:17 AM CDT	Severe Thunderstorm Warning	OAX	Boone, Madison, Platte	28 min
Jun 11, 12:46 AM CDT	Severe Thunderstorm Warning	OAX	Pierce	29 min
Jun 11, 12:50 AM CDT	Severe Thunderstorm Warning	OAX	Wayne	40 min
Jun 11, 1:44 AM CDT	Severe Thunderstorm Warning	OAX	Thurston	46 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.8 hours before the alert went out and 236 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: 2590 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1541 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 12.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 11:43 PM CDT	Mesoscale Discussion	SPC	Lincoln, Pipestone, Rock	92 min
Jun 11, 10:10 AM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Carver, Dakota, Dodge, Faribault and 24 more	95 min
Jun 11, 12:55 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Carver, Chippewa, Cottonwood, Dakota and 24 more	3 hr
Jun 11, 1:45 PM CDT	Tornado Watch	SPC	Blue Earth, Brown, Cottonwood, Dodge, Faribault, Freeborn and 12 more	5 hr
Jun 11, 3:03 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Cottonwood, Dodge, Faribault, Freeborn and 12 more	87 min
Jun 11, 5:00 PM CDT	Tornado Watch	SPC	Anoka, Benton, Blue Earth, Brown, Carver, Chippewa and 40 more	6 hr
Jun 11, 6:25 PM CDT	Mesoscale Discussion	SPC	Clay, Kittson, Norman, Polk, Wilkin	95 min
Jun 11, 6:40 PM CDT	Severe Thunderstorm Watch	SPC	Clay, Norman, Otter Tail, Wilkin	4 hr
Jun 10, 7:58 PM CDT	Mesoscale Discussion	SPC	Adams, Buffalo, Clay, Dawson, Fillmore, Franklin and 20 more	92 min
Jun 10, 8:19 PM CDT	Mesoscale Discussion	SPC	Antelope, Blaine, Boone, Boyd, Brown, Butler and 23 more	86 min
Jun 10, 10:00 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Buffalo, Clay, Fillmore, Franklin, Furnas and 12 more	5 hr
Jun 11, 1:28 AM CDT	Mesoscale Discussion	SPC	Burt, Butler, Cass, Colfax, Cuming, Dakota and 18 more	62 min
Jun 11, 4:55 PM CDT	Mesoscale Discussion	SPC	Richardson	95 min
Jun 11, 12:09 PM CDT	Mesoscale Discussion	SPC	Brown, Campbell, Corson, Dewey, Edmunds, Faulk and 4 more	2 hr

Nearby

Severe Thunderstorm Watches in South Dakota, 2004 Severe Thunderstorm Watches in Nebraska, 2004 Severe Thunderstorm Watches in Minnesota, 2004 Every severe thunderstorm watch 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.