Alert archive / Minnesota / Mesoscale Discussions in 2004

Mesoscale Discussion 1135

June 7, 200420 counties in Minnesota; Burnett County, Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2004, 7:08 PM CDT for 20 counties in Minnesota; Burnett County, Wisconsin. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 7, 2004, 7:08 PM CDT (00:08 UTC)
Expired: Jun 7, 2004, 9:15 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 21 counties

Aitkin County, MN, Anoka County, MN, Benton County, MN, Carlton County, MN, Carver County, MN, Chisago County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Pine County, MN, Ramsey County, MN, Renville County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Wright County, MN, Burnett County, WI

The radar

The Minneapolis radar (KMPX), 89 km from the middle of the area, began a volume at 00:10 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.

Severe Thunderstorm Watch 407Jun 7, 10:25 PM CDT

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.1 hours before the alert went out and 89 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: 1588 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 2423 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 172 m²/s²
0-3 km storm-relative helicity: 238 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

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, 9:46 PM CDT	Mesoscale Discussion	SPC	Chippewa, Kandiyohi, Lac qui Parle, Lincoln, Lyon, McLeod and 8 more	119 min
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 Minnesota, 2004 Mesoscale Discussions in Wisconsin, 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.