Alert archive / South Dakota / Mesoscale Discussions in 2015

Mesoscale Discussion 1152

June 24, 2015Cherry County, Nebraska; 8 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2015, 4:19 AM MDT for Cherry County, Nebraska; 8 counties in South Dakota. It was in force for 56 min.

The area

The outline as issued.

The facts

Issued: Jun 24, 2015, 4:19 AM MDT (10:19 UTC)
Expired: Jun 24, 2015, 5:15 AM MDT
In force: 56 min
Issued by: the Storm Prediction Center

Counties Cherry County, NE, Bennett County, SD, Custer County, SD, Fall River County, SD, Jackson County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Todd County, SD

The radar

The Rapid City radar (KUDX), 103 km from the middle of the area, began a volume at 10:18 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

Rapid City, SD (KRAP), launched 00:00Z, 10.3 hours before the alert went out and 99 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: 79 J/kg
Mixed-layer CIN: -232 J/kg
Mixed-layer LCL: 1623 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 23, 10:26 PM MDT	Mesoscale Discussion	SPC	Dundy, Frontier, Furnas, Hitchcock, Red Willow	2 hr
Jun 23, 11:39 PM MDT	Mesoscale Discussion	SPC	Antelope, Boone, Buffalo, Burt, Butler, Cass and 30 more	66 min
Jun 24, 2:23 AM MDT	Mesoscale Discussion	SPC	Dawes	97 min
Jun 24, 9:19 AM MDT	Mesoscale Discussion	SPC	Burt, Butler, Cass, Colfax, Cuming, Dodge and 11 more	116 min
Jun 24, 12:27 PM MDT	Mesoscale Discussion	SPC	Box Butte, Dawes, Scotts Bluff, Sioux	2 hr
Jun 24, 2:34 PM MDT	Mesoscale Discussion	SPC	Banner, Cheyenne, Kimball	86 min
Jun 24, 5:21 PM MDT	Tornado Watch	SPC	Burt, Cass, Dakota, Douglas, Otoe, Sarpy and 2 more	5 hr
Jun 23, 11:50 PM MDT	Severe Thunderstorm Watch	SPC	Bennett, Butte, Custer, Fall River, Jackson, Lawrence and 4 more	5 hr
Jun 23, 11:55 PM MDT	Mesoscale Discussion	SPC	Butte, Custer, Fall River, Lawrence, Meade, Oglala Lakota and 1 more	35 min

Nearby

Mesoscale Discussions in South Dakota, 2015 Mesoscale Discussions in Nebraska, 2015 Every mesoscale discussion in 2015

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.