Alert archive / South Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 1075

June 3, 20046 counties in Nebraska; 12 counties in South Dakota; Niobrara County, Weston County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2004, 3:29 PM MDT for 6 counties in Nebraska; 12 counties in South Dakota; Niobrara County, Weston County, Wyoming. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Jun 3, 2004, 3:29 PM MDT (21:29 UTC)
Expired
Jun 3, 2004, 5:00 PM MDT
In force
91 min
Issued by
the Storm Prediction Center

Counties Box Butte County, NE, Cherry County, NE, Dawes County, NE, Hooker County, NE, Sheridan County, NE, Sioux County, NE, Bennett County, SD, Custer County, SD, Fall River County, SD, Haakon County, SD, Jackson County, SD, Jones County, SD, Lawrence County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Todd County, SD, Niobrara County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 114 km from the middle of the area, began a volume at 21:32 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

Rapid City, SD (KUNR), launched 12:00Z, 9.5 hours before the alert went out and 107 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, Rapid City, SD at 12:00Z on 2004-06-03Temperature 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, Rapid City, SD at 12:00Z on 2004-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 square meters per square second.1939Sfc1 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
1602 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
213 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
Jun 3, 1:48 PM MDTMesoscale DiscussionSPCBanner, Box Butte, Cheyenne, Deuel, Garden, Kimball and 4 more117 min
Jun 3, 2:05 PM MDTTornado WatchSPCCheyenne, Kimball7 hr
Jun 3, 3:50 PM MDTSevere Thunderstorm WatchSPCArthur, Banner, Box Butte, Cherry, Dawes, Garden and 7 more5 hr
Jun 3, 5:05 PM MDTMesoscale DiscussionSPCArthur, Banner, Box Butte, Cheyenne, Dawes, Deuel and 7 more55 min

Nearby

Mesoscale Discussions in South Dakota, 2004Mesoscale Discussions in Nebraska, 2004Mesoscale Discussions in Wyoming, 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.