Alert archive / North Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 1625

July 11, 2004Richland County, Montana; 36 counties in North Dakota; 9 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 11, 2004, 10:34 PM MDT for Richland County, Montana; 36 counties in North Dakota; 9 counties in South Dakota. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued
Jul 11, 2004, 10:34 PM MDT (04:34 UTC)
Expired
Jul 12, 2004, 12:30 AM MDT
In force
116 min
Issued by
the Storm Prediction Center
All 46 counties

Richland County, MT, Adams County, ND, Benson County, ND, Billings County, ND, Bottineau County, ND, Burke County, ND, Burleigh County, ND, Dickey County, ND, Divide County, ND, Dunn County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Pierce County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Sioux County, ND, Stark County, ND, Stutsman County, ND, Towner County, ND, Ward County, ND, Wells County, ND, Williams County, ND, Brown County, SD, Campbell County, SD, Corson County, SD, Day County, SD, Edmunds County, SD, Marshall County, SD, McPherson County, SD, Perkins County, SD, Walworth County, SD

The radar

The Bismarck radar (KBIS), 93 km from the middle of the area, began a volume at 04:34 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, 4.6 hours before the alert went out and 98 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 2004-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2240 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 2004-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
2240 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1838 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

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.

IssuedProductOfficeCountiesLasted
Jul 11, 8:19 PM MDTMesoscale DiscussionSPCCuster, Daniels, Dawson, Fallon, Garfield, McCone and 9 more116 min
Jul 11, 8:40 PM MDTSevere Thunderstorm WatchSPCDaniels, Dawson, McCone, Prairie, Richland, Roosevelt and 2 more5 hr
Jul 11, 6:20 PM MDTSevere Thunderstorm WatchSPCAdams, Billings, Bottineau, Bowman, Burke, Divide and 16 more8 hr
Jul 11, 10:50 PM MDTSevere Thunderstorm WatchSPCBarnes, Benson, Burleigh, Cavalier, Dickey, Eddy and 17 more6 hr
Jul 12, 12:29 AM MDTMesoscale DiscussionSPCBarnes, Benson, Bottineau, Burleigh, Cass, Cavalier and 28 more91 min
Jul 12, 12:55 AM MDTSevere Thunderstorm WatchSPCCass, Grand Forks, Ransom, Richland, Sargent, Steele and 1 more5 hr
Jul 12, 2:13 AM MDTMesoscale DiscussionSPCBarnes, Cass, Dickey, Emmons, Foster, Grand Forks and 14 more92 min
Jul 12, 3:53 AM MDTMesoscale DiscussionSPCCass, Richland, Traill67 min
Jul 12, 7:53 AM MDTMesoscale DiscussionSPCDickey, McIntosh, Sargent2 hr
Jul 11, 8:54 PM MDTMesoscale DiscussionSPCAurora, Beadle, Brule, Buffalo, Charles Mix, Davison and 12 more3 hr
Jul 12, 9:55 AM MDTSevere Thunderstorm WatchSPCBeadle, Brookings, Clark, Codington, Day, Deuel and 4 more5 hr
Jul 12, 1:04 PM MDTMesoscale DiscussionSPCAurora, Bon Homme, Brule, Buffalo, Charles Mix, Davison and 12 more116 min
Jul 12, 2:25 PM MDTTornado WatchSPCAurora, Bon Homme, Brule, Charles Mix, Clay, Davison and 10 more6 hr
Jul 12, 5:20 PM MDTTornado WatchSPCBon Homme, Clay, Hanson, Hutchinson, Lincoln, McCook and 4 more7 hr

Nearby

Mesoscale Discussions in North Dakota, 2004Mesoscale Discussions in South Dakota, 2004Mesoscale Discussions in Montana, 2004Every mesoscale discussion in 2004

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.