Alert archive / Minnesota / Mesoscale Discussions in 2015

Mesoscale Discussion 1308

July 5, 20158 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2015, 5:02 PM CDT for 8 counties in Minnesota. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued: Jul 5, 2015, 5:02 PM CDT (22:02 UTC)
Expired: Jul 5, 2015, 7:00 PM CDT
In force: 118 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Aitkin County, MN, Carlton County, MN, Cass County, MN, Cook County, MN, Crow Wing County, MN, Itasca County, MN, Lake County, MN, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 95 km from the middle of the area, began a volume at 22:05 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 10.0 hours before the alert went out and 129 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: 33 J/kg
Mixed-layer CIN: -226 J/kg
Mixed-layer LCL: 1278 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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
Jul 5, 9:54 AM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Cass, Clay, Clearwater, Hubbard and 6 more	96 min
Jul 5, 10:40 AM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Clay, Clearwater, Hubbard, Mahnomen and 5 more	7 hr
Jul 5, 1:19 PM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Big Stone, Cass, Chippewa, Clay and 22 more	86 min
Jul 5, 3:46 PM CDT	Mesoscale Discussion	SPC	Lincoln, Murray, Nobles, Pipestone, Rock	119 min

Nearby

Mesoscale Discussions in Minnesota, 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.