Alert archive / South Dakota / Mesoscale Discussions in 2003

Mesoscale Discussion 1275

June 9, 20036 counties in Nebraska; 10 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 9, 2003, 5:00 PM CDT for 6 counties in Nebraska; 10 counties in South Dakota. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Jun 9, 2003, 5:00 PM CDT (22:00 UTC)
Expired: Jun 9, 2003, 6:30 PM CDT
In force: 90 min
Issued by: the Storm Prediction Center

Counties Boyd County, NE, Brown County, NE, Cherry County, NE, Holt County, NE, Keya Paha County, NE, Rock County, NE, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Gregory County, SD, Jones County, SD, Lyman County, SD, Mellette County, SD, Stanley County, SD, Todd County, SD, Tripp County, SD

The radar

The North Platte radar (KLNX), 142 km from the middle of the area, began a volume at 22:00 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, 10.0 hours before the alert went out and 230 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: 1213 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 158 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 9, 2:05 PM CDT	Mesoscale Discussion	SPC	Blaine, Brown, Clay, Fillmore, Hall, Hamilton and 6 more	115 min
Jun 9, 2:55 PM CDT	Tornado Watch	SPC	Boyd, Brown, Cherry, Holt, Keya Paha, Rock	6 hr
Jun 9, 3:42 PM CDT	Mesoscale Discussion	SPC	Blaine, Buffalo, Custer, Dawson, Lincoln, Logan and 4 more	2 hr
Jun 9, 4:30 PM CDT	Mesoscale Discussion	SPC	Franklin, Furnas, Harlan, Hayes, Hitchcock, Red Willow and 1 more	60 min
Jun 9, 4:50 PM CDT	Tornado Watch	SPC	Adams, Blaine, Boone, Buffalo, Clay, Custer and 25 more	5 hr
Jun 9, 6:15 PM CDT	Severe Thunderstorm Watch	SPC	Antelope, Boone, Burt, Cedar, Colfax, Cuming and 11 more	7 hr
Jun 9, 6:30 PM CDT	Mesoscale Discussion	SPC	Blaine, Boyd, Brown, Buffalo, Custer, Dawson and 15 more	90 min
Jun 9, 6:50 PM CDT	Tornado Watch	SPC	Antelope, Boone, Burt, Cedar, Colfax, Cuming and 11 more	6 hr
Jun 9, 4:05 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Campbell, Clark, Corson, Day, Dewey and 8 more	5 hr
Jun 9, 5:50 PM CDT	Mesoscale Discussion	SPC	Brown, Dewey, Edmunds, Faulk, Potter, Spink and 1 more	85 min
Jun 9, 6:55 PM CDT	Severe Thunderstorm Watch	SPC	Bon Homme, Brookings, Hanson, Hutchinson, Kingsbury, Lake and 7 more	6 hr

Nearby

Mesoscale Discussions in South Dakota, 2003 Mesoscale Discussions in Nebraska, 2003 Every mesoscale discussion in 2003

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.