Alert archive / Minnesota / Mesoscale Discussions in 2015

Mesoscale Discussion 1233

June 29, 201539 counties in Minnesota; 22 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jun 29, 2015, 4:49 PM CDT for 39 counties in Minnesota; 22 counties in Wisconsin. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Jun 29, 2015, 4:49 PM CDT (21:49 UTC)
Expired: Jun 29, 2015, 6:15 PM CDT
In force: 86 min
Issued by: the Storm Prediction Center

All 61 counties

Anoka County, MN, Benton County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Houston County, MN, Isanti County, MN, Kanabec County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Mower County, MN, Nicollet County, MN, Olmsted County, MN, Ramsey County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Winona County, MN, Wright County, MN, Adams County, WI, Barron County, WI, Buffalo County, WI, Burnett County, WI, Chippewa County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Marathon County, WI, Monroe County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Portage County, WI, Rusk County, WI, Saint Croix County, WI, Taylor County, WI, Trempealeau County, WI, Wood County, WI

The radar

The Minneapolis radar (KMPX), 71 km from the middle of the area, began a volume at 21:48 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, 9.8 hours before the alert went out and 73 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: 160 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 1297 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 29, 12:06 PM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Benton, Carlton, Carver, Chisago and 21 more	84 min
Jun 29, 1:57 PM CDT	Severe Thunderstorm Watch	SPC	Anoka, Benton, Blue Earth, Brown, Carver, Chisago and 32 more	8 hr

Nearby

Mesoscale Discussions in Minnesota, 2015 Mesoscale Discussions in Wisconsin, 2015 Every mesoscale discussion in 2015

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.