Alert archive / Minnesota / Mesoscale Discussions in 2007

Mesoscale Discussion 795

May 14, 20077 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at May 14, 2007, 5:34 PM CDT for 7 counties in Minnesota. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: May 14, 2007, 5:34 PM CDT (22:34 UTC)
Expired: May 14, 2007, 7:30 PM CDT
In force: 116 min
Issued by: the Storm Prediction Center

Counties Aitkin County, MN, Cass County, MN, Crow Wing County, MN, Hubbard County, MN, Itasca County, MN, Saint Louis County, MN, Wadena County, MN

The radar

The Duluth radar (KDLH), 112 km from the middle of the area, began a volume at 22:34 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 12:00Z, 10.6 hours before the alert went out and 153 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: 1046 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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
May 13, 7:03 PM CDT	Mesoscale Discussion	SPC	Aitkin, Becker, Beltrami, Carlton, Cass, Clay and 9 more	87 min
May 14, 2:31 PM CDT	Mesoscale Discussion	SPC	Carlton, Lake, Pine	119 min
May 14, 3:24 PM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Carlton, Chisago, Cook, Isanti, Kanabec and 4 more	7 hr
May 14, 5:49 PM CDT	Mesoscale Discussion	SPC	Aitkin, Cass, Crow Wing, Hubbard, Itasca, Saint Louis and 1 more	116 min
May 14, 6:32 PM CDT	Mesoscale Discussion	SPC	Aitkin, Cass, Crow Wing, Hubbard, Itasca, Saint Louis and 1 more	118 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.