Alert archive / North Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 1587

July 9, 200415 counties in North Dakota; 9 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 9, 2004, 6:29 PM MDT for 15 counties in North Dakota; 9 counties in South Dakota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 9, 2004, 6:29 PM MDT (00:29 UTC)
Expired
Jul 9, 2004, 8:30 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center
All 24 counties

Adams County, ND, Billings County, ND, Bowman County, ND, Dunn County, ND, Grant County, ND, Hettinger County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Ward County, ND, Butte County, SD, Corson County, SD, Dewey County, SD, Haakon County, SD, Harding County, SD, Meade County, SD, Perkins County, SD, Stanley County, SD, Ziebach County, SD

The radar

The Bismarck radar (KBIS), 114 km from the middle of the area, began a volume at 00:29 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.5 hours before the alert went out and 118 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 2004-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2004-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2022 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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, 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, 2:39 PM MDTMesoscale DiscussionSPCBillings, Bowman, Golden Valley, Hettinger, Slope, Stark2 hr
Jul 10, 2:55 PM MDTTornado WatchSPCBarnes, Burleigh, Cass, Dickey, Eddy, Emmons and 20 more6 hr
Jul 10, 2:56 PM MDTMesoscale DiscussionSPCBillings, Bowman, Golden Valley, Hettinger, Slope, Stark2 hr
Jul 10, 5:30 PM MDTSevere Thunderstorm WatchSPCAdams, Billings, Bowman, Dunn, Golden Valley, Hettinger and 3 more7 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 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.