Alert archive / North Dakota / Mesoscale Discussions in 2005

Mesoscale Discussion 2010

August 17, 20058 counties in Minnesota; 16 counties in North Dakota; 10 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Aug 17, 2005, 5:18 PM CDT for 8 counties in Minnesota; 16 counties in North Dakota; 10 counties in South Dakota. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Aug 17, 2005, 5:18 PM CDT (22:18 UTC)
Expired: Aug 17, 2005, 7:15 PM CDT
In force: 117 min
Issued by: the Storm Prediction Center

All 34 counties

Becker County, MN, Clay County, MN, Clearwater County, MN, Hubbard County, MN, Mahnomen County, MN, Norman County, MN, Otter Tail County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Emmons County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Sioux County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Brown County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Edmunds County, SD, Marshall County, SD, McPherson County, SD, Potter County, SD, Walworth County, SD, Ziebach County, SD

The radar

The Aberdeen radar (KABR), 115 km from the middle of the area, began a volume at 22:20 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, 10.3 hours before the alert went out and 177 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: 438 J/kg
Mixed-layer CIN: -205 J/kg
Mixed-layer LCL: 980 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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
Aug 17, 1:03 PM CDT	Mesoscale Discussion	SPC	Becker, Cass, Clay, Clearwater, Crow Wing, Douglas and 10 more	87 min
Aug 17, 1:35 PM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Clay, Clearwater, Grant, Hubbard and 8 more	8 hr
Aug 16, 7:26 PM CDT	Mesoscale Discussion	SPC	Billings, Golden Valley	94 min
Aug 16, 10:23 PM CDT	Mesoscale Discussion	SPC	Benson, Billings, Bottineau, Burke, Burleigh, Divide and 22 more	2 hr
Aug 16, 11:35 PM CDT	Mesoscale Discussion	SPC	Barnes, Benson, Burleigh, Dunn, Eddy, Foster and 15 more	55 min
Aug 17, 3:16 PM CDT	Mesoscale Discussion	SPC	Aurora, Beadle, Bon Homme, Brule, Buffalo, Charles Mix and 22 more	89 min
Aug 17, 4:55 PM CDT	Severe Thunderstorm Watch	SPC	Aurora, Beadle, Bon Homme, Brule, Buffalo, Charles Mix and 22 more	5 hr

Nearby

Mesoscale Discussions in North Dakota, 2005 Mesoscale Discussions in South Dakota, 2005 Mesoscale Discussions in Minnesota, 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.