Alert archive / South Dakota / Mesoscale Discussions in 2005

Mesoscale Discussion 1541

June 29, 20055 counties in Minnesota; Sargent County, North Dakota; 14 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 29, 2005, 1:52 PM CDT for 5 counties in Minnesota; Sargent County, North Dakota; 14 counties in South Dakota. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Jun 29, 2005, 1:52 PM CDT (18:52 UTC)
Expired: Jun 29, 2005, 3:45 PM CDT
In force: 113 min
Issued by: the Storm Prediction Center

Counties Big Stone County, MN, Lac qui Parle County, MN, Lincoln County, MN, Traverse County, MN, Yellow Medicine County, MN, Sargent County, ND, Brookings County, SD, Brown County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Kingsbury County, SD, Lake County, SD, Marshall County, SD, Moody County, SD, Roberts County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 69 km from the middle of the area, began a volume at 18:56 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Tornado Watch 554Jun 29, 3:50 PM CDT

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 6.9 hours before the alert went out and 61 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: 432 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 521 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 165 m²/s²
0-3 km storm-relative helicity: 222 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.9

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 29, 11:01 AM CDT	Mesoscale Discussion	SPC	Big Stone, Chippewa, Douglas, Grant, Lac qui Parle, Lincoln and 6 more	59 min
Jun 29, 11:30 AM CDT	Tornado Watch	SPC	Big Stone, Chippewa, Cottonwood, Douglas, Grant, Jackson and 13 more	7 hr
Jun 29, 3:37 PM CDT	Mesoscale Discussion	SPC	Becker, Big Stone, Chippewa, Clay, Cottonwood, Douglas and 25 more	53 min
Jun 29, 3:50 PM CDT	Tornado Watch	SPC	Becker, Benton, Big Stone, Blue Earth, Brown, Cass and 35 more	7 hr
Jun 29, 6:37 PM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Carlton, Carver, Chisago, Dakota and 21 more	83 min
Jun 28, 8:50 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Billings, Bowman, Burke, Divide, Dunn and 7 more	7 hr
Jun 28, 11:11 PM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bottineau, Bowman, Burke, Burleigh and 24 more	94 min
Jun 28, 11:35 PM CDT	Severe Thunderstorm Watch	SPC	Bottineau, Burke, Burleigh, Emmons, Grant, Kidder and 15 more	6 hr
Jun 29, 4:03 AM CDT	Mesoscale Discussion	SPC	Benson, Dickey, Emmons, Foster, Kidder, LaMoure and 5 more	87 min
Jun 28, 7:15 PM CDT	Severe Thunderstorm Watch	SPC	Aurora, Brule, Buffalo, Campbell, Charles Mix, Corson and 19 more	5 hr
Jun 28, 10:15 PM CDT	Mesoscale Discussion	SPC	Aurora, Bennett, Brule, Buffalo, Charles Mix, Corson and 19 more	60 min
Jun 28, 10:45 PM CDT	Severe Thunderstorm Watch	SPC	Brule, Buffalo, Butte, Campbell, Corson, Dewey and 15 more	7 hr
Jun 29, 2:47 AM CDT	Mesoscale Discussion	SPC	Brown, Edmunds, Faulk, McPherson, Potter, Spink and 1 more	88 min

Nearby

Mesoscale Discussions in South Dakota, 2005 Mesoscale Discussions in Minnesota, 2005 Mesoscale Discussions in North Dakota, 2005 Every mesoscale discussion in 2005

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.