Alert archive / South Dakota / Mesoscale Discussions in 2013

Mesoscale Discussion 1394

July 14, 20136 counties in North Dakota; 13 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 14, 2013, 5:14 AM CDT for 6 counties in North Dakota; 13 counties in South Dakota. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued: Jul 14, 2013, 5:14 AM CDT (10:14 UTC)
Expired: Jul 14, 2013, 6:15 AM CDT
In force: 61 min
Issued by: the Storm Prediction Center

Counties Dickey County, ND, LaMoure County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Brown County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Marshall County, SD, McPherson County, SD, Roberts County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 15 km from the middle of the area, began a volume at 10:14 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 10.2 hours before the alert went out and 226 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: 7 J/kg
Mixed-layer CIN: -214 J/kg
Mixed-layer LCL: 2287 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 60 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
Jul 13, 7:57 PM CDT	Mesoscale Discussion	SPC	Benson, Cavalier, Eddy, Nelson, Ramsey, Towner and 1 more	63 min
Jul 13, 8:37 PM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bottineau, Bowman, Burleigh, Dunn and 16 more	53 min
Jul 14, 1:39 AM CDT	Severe Thunderstorm Watch	SPC	Dickey, LaMoure, Logan, McIntosh, Ransom, Richland and 1 more	5 hr
Jul 13, 11:29 PM CDT	Mesoscale Discussion	SPC	Aurora, Beadle, Bon Homme, Brookings, Brown, Brule and 32 more	61 min
Jul 14, 1:18 AM CDT	Mesoscale Discussion	SPC	Brown, Campbell, Edmunds, Faulk, McPherson, Potter and 2 more	57 min

Nearby

Mesoscale Discussions in South Dakota, 2013 Mesoscale Discussions in North Dakota, 2013 Every mesoscale discussion in 2013

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.