Alert archive / Minnesota / Mesoscale Discussions in 2012

Mesoscale Discussion 1362

July 2, 201214 counties in Minnesota; 14 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2012, 10:59 AM CDT for 14 counties in Minnesota; 14 counties in North Dakota. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: Jul 2, 2012, 10:59 AM CDT (15:59 UTC)
Expired: Jul 2, 2012, 12:30 PM CDT
In force: 91 min
Issued by: the Storm Prediction Center
Chance of a watch: 80%

All 28 counties

Beltrami County, MN, Cass County, MN, Clearwater County, MN, Hubbard County, MN, Itasca County, MN, Kittson County, MN, Koochiching County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Benson County, ND, Cavalier County, ND, Eddy County, ND, Grand Forks County, ND, Griggs County, ND, Nelson County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Rolette County, ND, Steele County, ND, Towner County, ND, Traill County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 51 km from the middle of the area, began a volume at 16:02 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.

Severe Thunderstorm Watch 454Jul 2, 11:45 AM CDT

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 4.0 hours before the alert went out and 291 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: 3219 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 897 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.5

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 2, 11:43 AM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Becker, Beltrami, Cass, Clay, Clearwater and 14 more	7 hr
Jul 2, 3:33 PM CDT	Mesoscale Discussion	SPC	Aitkin, Becker, Beltrami, Carlton, Cass, Clay and 15 more	87 min
Jul 2, 6:40 PM CDT	Mesoscale Discussion	SPC	Aitkin, Becker, Beltrami, Carlton, Cass, Clay and 21 more	65 min
Jul 2, 6:54 PM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Becker, Beltrami, Carlton, Cass, Clay and 24 more	6 hr
Jul 1, 7:35 PM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bowman, Divide, Dunn, Golden Valley and 5 more	115 min
Jul 2, 1:23 AM CDT	Mesoscale Discussion	SPC	Burke, Divide, McKenzie, Mountrail, Renville, Ward and 1 more	97 min

Nearby

Mesoscale Discussions in Minnesota, 2012 Mesoscale Discussions in North Dakota, 2012 Every mesoscale discussion in 2012

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.