Alert archive / Minnesota / Mesoscale Discussions in 2014

Mesoscale Discussion 234

March 31, 201411 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2014, 3:05 PM CDT for 11 counties in Minnesota. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued: Mar 31, 2014, 3:05 PM CDT (20:05 UTC)
Expired: Mar 31, 2014, 5:00 PM CDT
In force: 115 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Chippewa County, MN, Cottonwood County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Pipestone County, MN, Redwood County, MN, Renville County, MN, Swift County, MN, Yellow Medicine County, MN

The radar

The Sioux Falls radar (KFSD), 125 km from the middle of the area, began a volume at 20:06 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.1 hours before the alert went out and 174 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: 1860 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 335 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
Mar 31, 6:18 AM CDT	Mesoscale Discussion	SPC	Norman, Polk	6 hr
Mar 31, 12:08 PM CDT	Mesoscale Discussion	SPC	Kittson, Marshall, Norman, Pennington, Polk, Red Lake and 1 more	6 hr
Mar 31, 3:49 PM CDT	Mesoscale Discussion	SPC	Becker, Big Stone, Clay, Traverse, Wilkin	5 hr
Mar 31, 3:52 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Faribault, Freeborn, Martin, Watonwan	113 min
Mar 31, 6:43 PM CDT	Mesoscale Discussion	SPC	Anoka, Benton, Carver, Dakota, Dodge, Fillmore and 15 more	3 hr

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.