Alert archive / North Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 1598

July 10, 2004Carter County, Custer County, Fallon County, Montana; 6 counties in North Dakota; Harding County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 10, 2004, 2:39 PM MDT for Carter County, Custer County, Fallon County, Montana; 6 counties in North Dakota; Harding County, South Dakota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 10, 2004, 2:39 PM MDT (20:39 UTC)
Expired
Jul 10, 2004, 4:45 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center

Counties Carter County, MT, Custer County, MT, Fallon County, MT, Billings County, ND, Bowman County, ND, Golden Valley County, ND, Hettinger County, ND, Slope County, ND, Stark County, ND, Harding County, SD

The radar

The Bismarck radar (KBIS), 231 km from the middle of the area, began a volume at 20:41 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 12:00Z, 8.7 hours before the alert went out and 236 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 12:00Z on 2004-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 804 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 12:00Z on 2004-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 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
804 J/kg
Mixed-layer CIN
-244 J/kg
Mixed-layer LCL
1142 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
118 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.

IssuedProductOfficeCountiesLasted
Jul 10, 1:34 PM MDTMesoscale DiscussionSPCBeaverhead, Broadwater, Cascade, Chouteau, Deer Lodge, Gallatin and 20 more86 min
Jul 10, 2:10 PM MDTSevere Thunderstorm WatchSPCBeaverhead, Broadwater, Cascade, Deer Lodge, Fergus, Gallatin and 8 more6 hr
Jul 10, 2:56 PM MDTMesoscale DiscussionSPCCarter, Custer, Fallon2 hr
Jul 10, 4:37 PM MDTMesoscale DiscussionSPCBlaine, Cascade, Chouteau, Fergus, Garfield, Golden Valley and 8 more113 min
Jul 10, 5:30 PM MDTSevere Thunderstorm WatchSPCCuster, Dawson, Fallon, Garfield, McCone, Prairie and 4 more7 hr
Jul 9, 6:29 PM MDTMesoscale DiscussionSPCAdams, Billings, Bowman, Dunn, Grant, Hettinger and 9 more2 hr
Jul 10, 7:56 AM MDTMesoscale DiscussionSPCRichland, Traill94 min
Jul 10, 1:19 PM MDTMesoscale DiscussionSPCBarnes, Burleigh, Eddy, Emmons, Foster, Griggs and 8 more2 hr
Jul 10, 2:07 PM MDTMesoscale DiscussionSPCGrand Forks, Nelson, Walsh113 min
Jul 10, 2:55 PM MDTTornado WatchSPCBarnes, Burleigh, Cass, Dickey, Eddy, Emmons and 20 more6 hr
Jul 10, 5:51 PM MDTMesoscale DiscussionSPCBarnes, Emmons, Grant, Kidder, LaMoure, Logan and 2 more114 min
Jul 10, 11:02 AM MDTMesoscale DiscussionSPCBennett, Corson, Dewey, Haakon, Jackson, Oglala Lakota and 6 more118 min
Jul 10, 11:25 AM MDTSevere Thunderstorm WatchSPCBennett, Corson, Dewey, Haakon, Jackson, Jones and 10 more7 hr
Jul 10, 2:35 PM MDTMesoscale DiscussionSPCAurora, Beadle, Brookings, Brown, Brule, Buffalo and 26 more85 min
Jul 10, 4:10 PM MDTMesoscale DiscussionSPCAurora, Beadle, Brown, Brule, Buffalo, Clark and 18 more2 hr
Jul 10, 4:25 PM MDTSevere Thunderstorm WatchSPCAurora, Beadle, Brookings, Brown, Brule, Buffalo and 30 more7 hr

Nearby

Mesoscale Discussions in North Dakota, 2004Mesoscale Discussions in Montana, 2004Mesoscale Discussions in South Dakota, 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.