Alert archive / South Dakota / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 656

August 7, 2000Big Stone County, Traverse County, Minnesota; 45 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Aug 7, 2000, 4:30 PM CDT for Big Stone County, Traverse County, Minnesota; 45 counties in South Dakota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Aug 7, 2000, 4:30 PM CDT (21:30 UTC)
Expired
Aug 7, 2000, 10:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 47 counties

Big Stone County, MN, Traverse County, MN, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Campbell County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, Lyman County, SD, Marshall County, SD, McCook County, SD, McPherson County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Potter County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Sully County, SD, Tripp County, SD, Turner County, SD, Walworth County, SD, Yankton County, SD

The radar

The Aberdeen radar (KABR), 152 km from the middle of the area, began a volume at 21:30 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.

Warnings issued inside it

22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Aug 7, 4:54 PM CDTSevere Thunderstorm WarningFSDCharles Mix, Gregory51 min
Aug 7, 5:06 PM CDTSevere Thunderstorm WarningFSDBon Homme24 min
Aug 7, 5:30 PM CDTSevere Thunderstorm WarningFSDBon Homme30 min
Aug 7, 5:42 PM CDTSevere Thunderstorm WarningFSDYankton33 min
Aug 7, 6:05 PM CDTSevere Thunderstorm WarningFSDHutchinson, Turner40 min
Aug 7, 6:16 PM CDTSevere Thunderstorm WarningFSDGregory44 min
Aug 7, 6:31 PM CDTSevere Thunderstorm WarningFSDMcCook, Minnehaha, Turner29 min
Aug 7, 6:32 PM CDTSevere Thunderstorm WarningFSDHutchinson43 min
Aug 7, 6:39 PM CDTSevere Thunderstorm WarningFSDMcCook51 min
Aug 7, 6:48 PM CDTSevere Thunderstorm WarningUNRTripp42 min
Aug 7, 7:01 PM CDTSevere Thunderstorm WarningFSDCharles Mix, Douglas29 min
Aug 7, 7:01 PM CDTSevere Thunderstorm WarningFSDLincoln, Minnehaha, Turner44 min
Aug 7, 7:01 PM CDTSevere Thunderstorm WarningFSDMcCook44 min
Aug 7, 7:09 PM CDTTornado WarningFSDDavison36 min
Aug 7, 7:12 PM CDTSevere Thunderstorm WarningFSDHutchinson33 min
Aug 7, 7:26 PM CDTSevere Thunderstorm WarningFSDLake34 min
Aug 7, 7:29 PM CDTSevere Thunderstorm WarningFSDMoody31 min
Aug 7, 7:41 PM CDTSevere Thunderstorm WarningFSDLincoln, Minnehaha34 min
Aug 7, 7:42 PM CDTSevere Thunderstorm WarningFSDBon Homme, Charles Mix48 min
Aug 7, 7:48 PM CDTSevere Thunderstorm WarningFSDHutchinson42 min
Aug 7, 8:32 PM CDTTornado WarningFSDBon Homme, Yankton28 min
Aug 7, 8:42 PM CDTSevere Thunderstorm WarningFSDCharles Mix33 min

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 9.5 hours before the alert went out and 94 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 12:00Z on 2000-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 42 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 12:00Z on 2000-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 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
42 J/kg
Mixed-layer CIN
-242 J/kg
Mixed-layer LCL
1640 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
265 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 7, 6:45 PM CDTSevere Thunderstorm WatchSPCAnoka, Benton, Big Stone, Blue Earth, Brown, Carver and 41 more6 hr

Nearby

Severe Thunderstorm Watches in South Dakota, 2000Severe Thunderstorm Watches in Minnesota, 2000Every severe thunderstorm watch in 2000

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.