Alert archive / North Dakota / Mesoscale Discussions in 2014

Mesoscale Discussion 760

May 30, 20144 counties in Minnesota; 16 counties in North Dakota; 12 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at May 30, 2014, 2:56 PM CDT for 4 counties in Minnesota; 16 counties in North Dakota; 12 counties in South Dakota. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: May 30, 2014, 2:56 PM CDT (19:56 UTC)
Expired: May 30, 2014, 4:30 PM CDT
In force: 94 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 32 counties

Kittson County, MN, Marshall County, MN, Polk County, MN, Roseau County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Emmons County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Nelson County, ND, Ransom County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Walsh County, ND, Brown County, SD, Campbell County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Hughes County, SD, Hyde County, SD, McPherson County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD

The radar

The Fargo/Grand Forks radar (KMVX), 123 km from the middle of the area, began a volume at 19:59 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

Aberdeen, SD (KABR), launched 12:00Z, 7.9 hours before the alert went out and 200 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: 348 J/kg
Mixed-layer CIN: -163 J/kg
Mixed-layer LCL: 1265 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 61 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
May 29, 8:47 PM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bottineau, Bowman, Burke, Dunn and 12 more	58 min
May 30, 3:12 PM CDT	Mesoscale Discussion	SPC	Bennett, Lyman, Mellette, Todd, Tripp	93 min

Nearby

Mesoscale Discussions in North Dakota, 2014 Mesoscale Discussions in South Dakota, 2014 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.