Alert archive / Minnesota / Mesoscale Discussions in 2003

Mesoscale Discussion 1644

July 6, 20036 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2003, 4:08 AM CDT for 6 counties in Minnesota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 6, 2003, 4:08 AM CDT (09:08 UTC)
Expired: Jul 6, 2003, 6:15 AM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Beltrami County, MN, Clearwater County, MN, Koochiching County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 150 km from the middle of the area, began a volume at 09:10 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 nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 9.1 hours before the alert went out and 173 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: 84 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1692 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 130 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
Jul 5, 8:04 PM CDT	Mesoscale Discussion	SPC	Brown, Chippewa, Cottonwood, Jackson, Lac qui Parle, Lincoln and 9 more	86 min
Jul 6, 5:17 AM CDT	Mesoscale Discussion	SPC	Dodge, Goodhue, Houston, Olmsted, Wabasha, Winona	118 min
Jul 6, 12:56 PM CDT	Mesoscale Discussion	SPC	Aitkin, Carlton, Itasca, Koochiching, Lake of the Woods, Saint Louis	109 min
Jul 6, 1:40 PM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Clay, Clearwater, Mahnomen, Marshall and 4 more	3 hr
Jul 6, 2:20 PM CDT	Tornado Watch	SPC	Aitkin, Becker, Beltrami, Cass, Clay, Clearwater and 11 more	8 hr
Jul 6, 4:56 PM CDT	Mesoscale Discussion	SPC	Benton, Big Stone, Chippewa, Kanabec, Kandiyohi, Lac qui Parle and 15 more	2 hr
Jul 6, 5:29 PM CDT	Mesoscale Discussion	SPC	Aitkin, Becker, Beltrami, Cass, Clay, Clearwater and 11 more	2 hr
Jul 6, 6:54 PM CDT	Mesoscale Discussion	SPC	Anoka, Benton, Carlton, Chisago, Cook, Douglas and 14 more	4 hr

Nearby

Mesoscale Discussions in Minnesota, 2003 Every mesoscale discussion in 2003

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.