Alert archive / Minnesota / Mesoscale Discussions in 2014

Mesoscale Discussion 1284

July 6, 201411 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2014, 5:19 AM CDT for 11 counties in Minnesota. It was in force for 26 min.

The area

The outline as issued.

The facts

Issued: Jul 6, 2014, 5:19 AM CDT (10:19 UTC)
Expired: Jul 6, 2014, 5:45 AM CDT
In force: 26 min
Issued by: the Storm Prediction Center

Counties Becker County, MN, Beltrami County, MN, Clearwater County, MN, Hubbard County, MN, Mahnomen County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Wadena County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 127 km from the middle of the area, began a volume at 10:23 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 00:00Z, 10.3 hours before the alert went out and 216 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: 3255 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 989 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 176 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 12.2

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, 10:11 PM CDT	Mesoscale Discussion	SPC	Becker, Clay, Clearwater, Kittson, Mahnomen, Marshall and 5 more	64 min
Jul 5, 10:48 PM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Clay, Clearwater, Hubbard, Kittson and 10 more	7 hr
Jul 6, 1:30 AM CDT	Mesoscale Discussion	SPC	Aitkin, Crow Wing, Morrison, Todd	60 min
Jul 6, 2:20 AM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Clay, Clearwater, Hubbard, Lake of the Woods and 10 more	85 min
Jul 6, 4:44 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Dakota, Dodge, Faribault, Fillmore, Freeborn and 14 more	61 min

Nearby

Mesoscale Discussions in Minnesota, 2014 Every mesoscale discussion in 2014

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.