Alert archive / South Dakota / Mesoscale Discussions in 2008

Mesoscale Discussion 1174

June 3, 20087 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2008, 6:24 AM CDT for 7 counties in South Dakota. It was in force for 36 min.

The area

The outline as issued.

The facts

Issued: Jun 3, 2008, 6:24 AM CDT (11:24 UTC)
Expired: Jun 3, 2008, 7:00 AM CDT
In force: 36 min
Issued by: the Storm Prediction Center

Counties Hughes County, SD, Jones County, SD, Lyman County, SD, Mellette County, SD, Stanley County, SD, Todd County, SD, Tripp County, SD

The radar

The Rapid City radar (KUDX), 167 km from the middle of the area, began a volume at 11:27 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 (KUNR), launched 00:00Z, 11.4 hours before the alert went out and 169 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: 1085 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1211 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.8

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 2, 7:11 PM CDT	Mesoscale Discussion	SPC	Aurora, Beadle, Brule, Buffalo, Charles Mix, Davison and 20 more	34 min
Jun 2, 7:33 PM CDT	Severe Thunderstorm Watch	SPC	Bennett, Buffalo, Haakon, Hand, Hughes, Hyde and 7 more	5 hr
Jun 2, 10:02 PM CDT	Mesoscale Discussion	SPC	Aurora, Bon Homme, Brule, Buffalo, Charles Mix, Davison and 21 more	118 min
Jun 3, 1:57 AM CDT	Severe Thunderstorm Watch	SPC	Bon Homme, Clay, Hutchinson, Lincoln, Turner, Union and 1 more	3 hr
Jun 3, 2:38 AM CDT	Mesoscale Discussion	SPC	Bennett, Custer, Haakon, Jackson, Jones, Mellette and 3 more	67 min
Jun 3, 2:53 AM CDT	Severe Thunderstorm Watch	SPC	Bennett, Butte, Custer, Fall River, Haakon, Hughes and 12 more	4 hr
Jun 3, 4:12 AM CDT	Mesoscale Discussion	SPC	Clay, Union	2 hr

Nearby

Mesoscale Discussions in South Dakota, 2008 Every mesoscale discussion in 2008

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.