Alert archive / Minnesota / Mesoscale Discussions in 2012

Mesoscale Discussion 1163

June 14, 20127 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jun 14, 2012, 2:31 PM CDT for 7 counties in Minnesota. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Jun 14, 2012, 2:31 PM CDT (19:31 UTC)
Expired: Jun 14, 2012, 4:00 PM CDT
In force: 89 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Clay County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 107 km from the middle of the area, began a volume at 19:31 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, 7.5 hours before the alert went out and 217 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: 755 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 235 m²/s²
0-3 km storm-relative helicity: 334 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 13, 10:53 PM CDT	Severe Thunderstorm Watch	SPC	Clay, Norman, Traverse, Wilkin	5 hr
Jun 14, 3:01 AM CDT	Mesoscale Discussion	SPC	Big Stone, Douglas, Grant, Otter Tail, Pope, Stevens and 2 more	89 min
Jun 14, 7:37 AM CDT	Mesoscale Discussion	SPC	Anoka, Benton, Carver, Chisago, Dakota, Hennepin and 9 more	113 min
Jun 14, 1:44 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Chippewa, Cottonwood, Faribault, Jackson and 19 more	2 hr
Jun 14, 2:45 PM CDT	Severe Thunderstorm Watch	SPC	Blue Earth, Brown, Carver, Cottonwood, Dakota, Dodge and 22 more	7 hr

Nearby

Mesoscale Discussions in Minnesota, 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.