Alert archive / Minnesota / Mesoscale Discussions in 2007

Mesoscale Discussion 1224

June 20, 20078 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2007, 8:28 PM CDT for 8 counties in Minnesota. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: Jun 20, 2007, 8:28 PM CDT (01:28 UTC)
Expired: Jun 20, 2007, 10:00 PM CDT
In force: 92 min
Issued by: the Storm Prediction Center

Counties Blue Earth County, MN, Dodge County, MN, Goodhue County, MN, Le Sueur County, MN, Olmsted County, MN, Rice County, MN, Steele County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 87 km from the middle of the area, began a volume at 01:28 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 00:00Z, 1.5 hours before the alert went out and 88 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: 551 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 2355 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 159 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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 20, 11:30 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Dodge, Faribault, Fillmore, Freeborn, Goodhue and 7 more	90 min
Jun 21, 2:10 AM CDT	Mesoscale Discussion	SPC	Big Stone, Lac qui Parle, Stevens, Traverse, Yellow Medicine	95 min
Jun 21, 2:29 AM CDT	Severe Thunderstorm Watch	SPC	Big Stone, Traverse, Wilkin	8 hr
Jun 21, 3:55 AM CDT	Mesoscale Discussion	SPC	Big Stone, Blue Earth, Brown, Carver, Chippewa, Cottonwood and 32 more	95 min
Jun 21, 4:27 AM CDT	Severe Thunderstorm Watch	SPC	Blue Earth, Brown, Carver, Chippewa, Dakota, Dodge and 33 more	8 hr
Jun 21, 7:14 AM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Chippewa, Cottonwood, Faribault, Jackson and 11 more	91 min
Jun 21, 9:10 AM CDT	Mesoscale Discussion	SPC	Cottonwood, Jackson, Lincoln, Murray, Nobles, Pipestone and 1 more	35 min
Jun 21, 9:38 AM CDT	Severe Thunderstorm Watch	SPC	Cottonwood, Jackson, Lincoln, Lyon, Murray, Nobles and 2 more	6 hr
Jun 21, 11:08 AM CDT	Mesoscale Discussion	SPC	Anoka, Benton, Brown, Carver, Chippewa, Dakota and 25 more	67 min
Jun 21, 11:55 AM CDT	Mesoscale Discussion	SPC	Blue Earth, Carver, Dakota, Dodge, Faribault, Fillmore and 19 more	50 min
Jun 21, 11:59 AM CDT	Severe Thunderstorm Watch	SPC	Blue Earth, Brown, Carver, Dakota, Dodge, Faribault and 20 more	8 hr
Jun 21, 2:13 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Carver, Cottonwood, Dakota, Dodge and 28 more	62 min
Jun 21, 3:15 PM CDT	Mesoscale Discussion	SPC	Cottonwood, Jackson, Lincoln, Lyon, Murray, Nobles and 2 more	30 min
Jun 21, 3:25 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Carver, Dakota, Dodge, Faribault and 20 more	35 min
Jun 21, 5:42 PM CDT	Mesoscale Discussion	SPC	Houston	93 min

Nearby

Mesoscale Discussions in Minnesota, 2007 Every mesoscale discussion in 2007

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.