Alert archive / Minnesota / Mesoscale Discussions in 2004

Mesoscale Discussion 2088

August 23, 200413 counties in Iowa; 35 counties in Minnesota; 12 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Aug 23, 2004, 5:30 PM CDT for 13 counties in Iowa; 35 counties in Minnesota; 12 counties in South Dakota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Aug 23, 2004, 5:30 PM CDT (22:30 UTC)
Expired
Aug 23, 2004, 7:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 60 counties

Allamakee County, IA, Chickasaw County, IA, Dickinson County, IA, Emmet County, IA, Floyd County, IA, Howard County, IA, Kossuth County, IA, Lyon County, IA, Mitchell County, IA, Osceola County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Blue Earth County, MN, Brown County, MN, Chippewa County, MN, Cottonwood County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Houston County, MN, Jackson County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Mower County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Olmsted County, MN, Pipestone County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Rock County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Watonwan County, MN, Winona County, MN, Yellow Medicine County, MN, Brookings County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Kingsbury County, SD, Lake County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD

The radar

The Minneapolis radar (KMPX), 129 km from the middle of the area, began a volume at 22:33 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

Minneapolis, MN (KMPX), launched 12:00Z, 10.5 hours before the alert went out and 128 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, Minneapolis, MN at 12:00Z 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, Minneapolis, MN at 12:00Z on 2004-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 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
799 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
170 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, 2:58 PM CDTMesoscale DiscussionSPCAudubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 47 more2 hr
Aug 22, 7:32 PM CDTMesoscale DiscussionSPCBennett, Jackson, Mellette, Oglala Lakota, Pennington118 min
Aug 23, 2:22 PM CDTMesoscale DiscussionSPCBennett, Brule, Buffalo, Campbell, Corson, Dewey and 20 more113 min
Aug 23, 3:25 PM CDTTornado WatchSPCCampbell, Corson, Dewey, Edmunds, Faulk, Perkins and 3 more6 hr
Aug 23, 5:05 PM CDTSevere Thunderstorm WatchSPCBennett, Brule, Buffalo, Gregory, Haakon, Hand and 10 more6 hr
Aug 23, 6:02 PM CDTMesoscale DiscussionSPCCampbell, Corson, Dewey, Edmunds, Faulk, Perkins and 3 more88 min

Nearby

Mesoscale Discussions in Minnesota, 2004Mesoscale Discussions in Iowa, 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.