Alert archive / South Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 1136

June 7, 200414 counties in Minnesota; 17 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2004, 9:46 PM CDT for 14 counties in Minnesota; 17 counties in South Dakota. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued: Jun 7, 2004, 9:46 PM CDT (02:46 UTC)
Expired: Jun 7, 2004, 11:45 PM CDT
In force: 119 min
Issued by: the Storm Prediction Center

All 31 counties

Chippewa County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Pipestone County, MN, Redwood County, MN, Renville County, MN, Stearns County, MN, Swift County, MN, Yellow Medicine County, MN, Aurora County, SD, Beadle County, SD, Brookings County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Hanson County, SD, Kingsbury County, SD, Lake County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD

The radar

The Sioux Falls radar (KFSD), 116 km from the middle of the area, began a volume at 02:47 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.8 hours before the alert went out and 155 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: 2476 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 69 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 7, 7:08 PM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Benton, Carlton, Carver, Chisago and 14 more	2 hr
Jun 7, 10:25 PM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Benton, Big Stone, Carlton, Chippewa, Cook and 21 more	6 hr
Jun 8, 12:42 AM CDT	Mesoscale Discussion	SPC	Anoka, Brown, Carver, Chisago, Dakota, Dodge and 17 more	63 min
Jun 8, 12:55 AM CDT	Severe Thunderstorm Watch	SPC	Anoka, Carver, Chisago, Dakota, Goodhue, Hennepin and 10 more	3 hr
Jun 8, 2:08 AM CDT	Mesoscale Discussion	SPC	Aitkin, Benton, Carlton, Chippewa, Cook, Crow Wing and 14 more	67 min
Jun 8, 3:02 AM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Benton, Carlton, Carver, Chisago and 23 more	58 min
Jun 8, 3:29 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Dodge, Faribault, Fillmore, Freeborn, Goodhue and 10 more	2 hr
Jun 8, 5:00 PM CDT	Severe Thunderstorm Watch	SPC	Freeborn	6 hr

Nearby

Mesoscale Discussions in South Dakota, 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.