Alert archive / South Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 2080

August 22, 20045 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Aug 22, 2004, 6:32 PM MDT for 5 counties in South Dakota. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
Aug 22, 2004, 6:32 PM MDT (00:32 UTC)
Expired
Aug 22, 2004, 8:30 PM MDT
In force
118 min
Issued by
the Storm Prediction Center

Counties Bennett County, SD, Jackson County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.5 hours before the alert went out and 295 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, Aberdeen, SD at 00:00Z on 2004-08-23Temperature 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, Aberdeen, SD at 00:00Z on 2004-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 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
992 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
70 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
Aug 23, 1:22 PM MDTMesoscale DiscussionSPCBennett, Brule, Buffalo, Campbell, Corson, Dewey and 20 more113 min
Aug 23, 1:58 PM MDTMesoscale DiscussionSPCClay, Lincoln, McCook, Minnehaha, Turner, Union and 1 more2 hr
Aug 23, 2:25 PM MDTTornado WatchSPCCampbell, Corson, Dewey, Edmunds, Faulk, Perkins and 3 more6 hr
Aug 23, 4:05 PM MDTSevere Thunderstorm WatchSPCBennett, Brule, Buffalo, Gregory, Haakon, Hand and 10 more6 hr
Aug 23, 4:30 PM MDTMesoscale DiscussionSPCBrookings, Clark, Codington, Day, Deuel, Grant and 6 more2 hr
Aug 23, 5:02 PM MDTMesoscale DiscussionSPCCampbell, Corson, Dewey, Edmunds, Faulk, Perkins and 3 more88 min

Nearby

Mesoscale 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.