Alert archive / North Dakota / Mesoscale Discussions in 2005

Mesoscale Discussion 1485

June 26, 20054 states

The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2005, 1:30 PM MDT for 4 states. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Jun 26, 2005, 1:30 PM MDT (19:30 UTC)
Expired: Jun 26, 2005, 4:00 PM MDT
In force: 3 hr
Issued by: the Storm Prediction Center

Counties Carter County, MT, Custer County, MT, Fallon County, MT, Powder River County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Dunn County, ND, Golden Valley County, ND, Hettinger County, ND, McKenzie County, ND, Mercer County, ND, Mountrail County, ND, Slope County, ND, Stark County, ND, Butte County, SD, Harding County, SD, Perkins County, SD, Crook County, WY

The radar

The Bismarck radar (KBIS), 219 km from the middle of the area, began a volume at 19:33 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.

Severe Thunderstorm Watch 531Jun 26, 2:15 PM MDT

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 7.5 hours before the alert went out and 224 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: 10 J/kg
Mixed-layer CIN: -386 J/kg
Mixed-layer LCL: 589 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -32 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.3

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 25, 6:40 PM MDT	Tornado Watch	SPC	Big Horn, Carter, Custer, Daniels, Dawson, Fallon and 8 more	6 hr
Jun 25, 6:42 PM MDT	Mesoscale Discussion	SPC	Beaverhead, Broadwater, Gallatin, Golden Valley, Jefferson, Madison and 6 more	93 min
Jun 25, 9:20 PM MDT	Mesoscale Discussion	SPC	Big Horn, Carter, Custer, Daniels, Dawson, Fallon and 8 more	85 min
Jun 25, 10:49 PM MDT	Mesoscale Discussion	SPC	Fallon, Wibaux	116 min
Jun 26, 2:15 PM MDT	Severe Thunderstorm Watch	SPC	Carter, Dawson, Fallon, Powder River, Richland, Roosevelt and 2 more	7 hr
Jun 26, 12:25 AM MDT	Severe Thunderstorm Watch	SPC	Adams, Benson, Bottineau, Burleigh, Cavalier, Eddy and 17 more	6 hr
Jun 26, 2:58 AM MDT	Mesoscale Discussion	SPC	Burleigh, Cavalier, Eddy, Foster, Kidder, Nelson and 3 more	92 min
Jun 26, 9:50 AM MDT	Mesoscale Discussion	SPC	Barnes, Cass, Dickey, Grand Forks, Griggs, LaMoure and 6 more	115 min
Jun 26, 12:29 PM MDT	Mesoscale Discussion	SPC	Barnes, Burleigh, Cass, Dickey, Emmons, Foster and 14 more	2 hr
Jun 26, 12:45 PM MDT	Tornado Watch	SPC	Barnes, Burleigh, Cass, Dickey, Eddy, Emmons and 19 more	8 hr
Jun 26, 2:48 PM MDT	Mesoscale Discussion	SPC	Barnes, Burleigh, Cass, Dickey, Eddy, Emmons and 18 more	87 min
Jun 25, 8:23 PM MDT	Mesoscale Discussion	SPC	Butte, Custer, Fall River, Lawrence, Oglala Lakota, Pennington	97 min
Jun 26, 2:59 PM MDT	Mesoscale Discussion	SPC	Bennett, Custer, Fall River, Jackson, Oglala Lakota, Pennington	2 hr
Jun 25, 6:15 PM MDT	Mesoscale Discussion	SPC	Uinta	2 hr
Jun 26, 2:30 PM MDT	Mesoscale Discussion	SPC	Teton	2 hr

Nearby

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