Alert archive / Minnesota / Mesoscale Discussions in 2004

Mesoscale Discussion 1452

June 30, 200425 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2004, 2:57 PM CDT for 25 counties in Minnesota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 30, 2004, 2:57 PM CDT (19:57 UTC)
Expired: Jun 30, 2004, 5:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 25 counties

Blue Earth County, MN, Brown County, MN, Carver County, MN, Cottonwood County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Mower County, MN, Nicollet County, MN, Olmsted County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Watonwan County, MN

The radar

The Minneapolis radar (KMPX), 60 km from the middle of the area, began a volume at 19:58 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.0 hours before the alert went out and 60 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: 1785 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 15 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 30, 1:15 PM CDT	Mesoscale Discussion	SPC	Carlton, Pine	90 min
Jun 30, 1:55 PM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Benton, Carlton, Chisago, Isanti, Itasca and 5 more	7 hr
Jun 30, 4:52 PM CDT	Mesoscale Discussion	SPC	Aitkin, Carlton, Kanabec, Mille Lacs, Pine	83 min

Nearby

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.