Alert archive / South Dakota / Mesoscale Discussions in 2005

Mesoscale Discussion 2080

August 25, 20058 counties in Minnesota; 7 counties in Nebraska; 31 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Aug 25, 2005, 8:06 PM CDT for 8 counties in Minnesota; 7 counties in Nebraska; 31 counties in South Dakota. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued
Aug 25, 2005, 8:06 PM CDT (01:06 UTC)
Expired
Aug 25, 2005, 9:00 PM CDT
In force
54 min
Issued by
the Storm Prediction Center
All 46 counties

Big Stone County, MN, Douglas County, MN, Grant County, MN, Lac qui Parle County, MN, Pope County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Antelope County, NE, Boyd County, NE, Brown County, NE, Holt County, NE, Keya Paha County, NE, Knox County, NE, Rock County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Douglas County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Marshall County, SD, McCook County, SD, Miner County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Turner County, SD, Yankton County, SD

The radar

The Aberdeen radar (KABR), 121 km from the middle of the area, began a volume at 01:08 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

Aberdeen, SD (KABR), launched 00:00Z, 1.1 hours before the alert went out and 63 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 2005-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 317 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, Aberdeen, SD at 00:00Z on 2005-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 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
317 J/kg
Mixed-layer CIN
-257 J/kg
Mixed-layer LCL
782 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.4

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 25, 7:37 PM CDTMesoscale DiscussionSPCArthur, Chase, Dawson, Deuel, Dundy, Frontier and 9 more83 min
Aug 25, 8:30 PM CDTSevere Thunderstorm WatchSPCBlaine, Boyd, Brown, Buffalo, Custer, Dawson and 20 more6 hr
Aug 25, 11:28 PM CDTMesoscale DiscussionSPCAntelope, Blaine, Brown, Buffalo, Custer, Dawson and 25 more92 min
Aug 25, 10:30 PM CDTMesoscale DiscussionSPCAurora, Beadle, Brule, Buffalo, Charles Mix, Clark and 18 more90 min

Nearby

Mesoscale Discussions in South Dakota, 2005Mesoscale Discussions in Minnesota, 2005Mesoscale Discussions in Nebraska, 2005Every mesoscale discussion in 2005

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.