Alert archive / North Dakota / Mesoscale Discussions in 2005

Mesoscale Discussion 1476

June 25, 200514 counties in Montana; 18 counties in North Dakota; Harding County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2005, 9:20 PM MDT for 14 counties in Montana; 18 counties in North Dakota; Harding County, South Dakota. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued
Jun 25, 2005, 9:20 PM MDT (03:20 UTC)
Expired
Jun 25, 2005, 10:45 PM MDT
In force
85 min
Issued by
the Storm Prediction Center
All 33 counties

Big Horn County, MT, Carter County, MT, Custer County, MT, Daniels County, MT, Dawson County, MT, Fallon County, MT, McCone County, MT, Powder River County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Rosebud County, MT, Sheridan County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bottineau County, ND, Bowman County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, Hettinger County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Mountrail County, ND, Renville County, ND, Slope County, ND, Stark County, ND, Ward County, ND, Williams County, ND, Harding County, SD

The radar

The Bismarck radar (KBIS), 247 km from the middle of the area, began a volume at 03:22 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.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.3 hours before the alert went out and 251 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-pSkew-T log-p diagram, Bismarck Municip, ND at 00:00Z on 2005-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 239 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2005-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
239 J/kg
Mixed-layer CIN
-236 J/kg
Mixed-layer LCL
1631 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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.

IssuedProductOfficeCountiesLasted
Jun 25, 6:40 PM MDTTornado WatchSPCBig Horn, Carter, Custer, Daniels, Dawson, Fallon and 8 more6 hr
Jun 25, 6:42 PM MDTMesoscale DiscussionSPCBeaverhead, Broadwater, Gallatin, Golden Valley, Jefferson, Madison and 6 more93 min
Jun 25, 10:49 PM MDTMesoscale DiscussionSPCFallon, Wibaux116 min
Jun 26, 1:30 PM MDTMesoscale DiscussionSPCCarter, Custer, Fallon, Powder River, Wibaux3 hr
Jun 26, 2:15 PM MDTSevere Thunderstorm WatchSPCCarter, Dawson, Fallon, Powder River, Richland, Roosevelt and 2 more7 hr
Jun 26, 12:25 AM MDTSevere Thunderstorm WatchSPCAdams, Benson, Bottineau, Burleigh, Cavalier, Eddy and 17 more6 hr
Jun 26, 2:58 AM MDTMesoscale DiscussionSPCBurleigh, Cavalier, Eddy, Foster, Kidder, Nelson and 3 more92 min
Jun 26, 9:50 AM MDTMesoscale DiscussionSPCBarnes, Cass, Dickey, Grand Forks, Griggs, LaMoure and 6 more115 min
Jun 26, 12:29 PM MDTMesoscale DiscussionSPCBarnes, Burleigh, Cass, Dickey, Emmons, Foster and 14 more2 hr
Jun 26, 12:45 PM MDTTornado WatchSPCBarnes, Burleigh, Cass, Dickey, Eddy, Emmons and 19 more8 hr
Jun 26, 2:48 PM MDTMesoscale DiscussionSPCBarnes, Burleigh, Cass, Dickey, Eddy, Emmons and 18 more87 min
Jun 25, 8:23 PM MDTMesoscale DiscussionSPCButte, Custer, Fall River, Lawrence, Oglala Lakota, Pennington97 min
Jun 26, 2:59 PM MDTMesoscale DiscussionSPCBennett, Custer, Fall River, Jackson, Oglala Lakota, Pennington2 hr

Nearby

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