Alert archive / South Dakota / Mesoscale Discussions in 2015

Mesoscale Discussion 1070

June 19, 201515 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2015, 10:01 AM CDT for 15 counties in South Dakota. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Jun 19, 2015, 10:01 AM CDT (15:01 UTC)
Expired: Jun 19, 2015, 11:30 AM CDT
In force: 89 min
Issued by: the Storm Prediction Center
Chance of a watch: 5%

Counties Aurora County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Davison County, SD, Douglas County, SD, Hanson County, SD, Hughes County, SD, Hyde County, SD, Jerauld County, SD, Jones County, SD, Lyman County, SD, McCook County, SD, Sanborn County, SD, Stanley County, SD

The radar

The Aberdeen radar (KABR), 186 km from the middle of the area, began a volume at 15:01 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, 3.0 hours before the alert went out and 138 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: 1398 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 190 m²/s²
0-3 km storm-relative helicity: 286 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 19, 3:28 AM CDT	Mesoscale Discussion	SPC	Butte, Haakon, Harding, Lawrence, Meade, Perkins and 1 more	92 min
Jun 19, 3:04 PM CDT	Mesoscale Discussion	SPC	Butte, Harding, Lawrence	116 min
Jun 19, 3:51 PM CDT	Tornado Watch	SPC	Bennett, Butte, Custer, Haakon, Harding, Jackson and 5 more	7 hr

Nearby

Mesoscale Discussions in South Dakota, 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.