Alert archive / South Dakota / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 465

June 24, 2002Lyon County, Iowa; 8 counties in Minnesota; 35 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 24, 2002, 5:45 PM CDT for Lyon County, Iowa; 8 counties in Minnesota; 35 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 24, 2002, 5:45 PM CDT (22:45 UTC)
Expired
Jun 24, 2002, 11:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 44 counties

Lyon County, IA, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Rock County, MN, Yellow Medicine County, MN, Aurora County, SD, Beadle County, SD, Brookings County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Deuel County, SD, Douglas 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, Jones County, SD, Kingsbury County, SD, Lake County, SD, Lyman County, SD, McCook County, SD, Mellette County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Turner County, SD

The radar

The Aberdeen radar (KABR), 137 km from the middle of the area, began a volume at 22:45 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

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

IssuedProductOfficeCountiesLasted
Jun 24, 6:18 PM CDTSevere Thunderstorm WarningFSDKingsbury27 min
Jun 24, 6:44 PM CDTSevere Thunderstorm WarningFSDLake, Miner31 min
Jun 24, 7:12 PM CDTSevere Thunderstorm WarningFSDLake33 min
Jun 24, 7:43 PM CDTSevere Thunderstorm WarningFSDMiner32 min
Jun 24, 8:00 PM CDTSevere Thunderstorm WarningFSDKingsbury30 min
Jun 24, 8:01 PM CDTSevere Thunderstorm WarningUNRTodd29 min
Jun 24, 8:08 PM CDTSevere Thunderstorm WarningUNRTripp52 min
Jun 24, 8:15 PM CDTSevere Thunderstorm WarningFSDMiner30 min
Jun 24, 8:28 PM CDTSevere Thunderstorm WarningFSDAurora32 min
Jun 24, 8:36 PM CDTSevere Thunderstorm WarningFSDSanborn24 min
Jun 24, 8:38 PM CDTSevere Thunderstorm WarningFSDKingsbury22 min
Jun 24, 8:39 PM CDTSevere Thunderstorm WarningABRBuffalo, Lyman66 min
Jun 24, 8:41 PM CDTSevere Thunderstorm WarningFSDMiner49 min
Jun 24, 8:54 PM CDTSevere Thunderstorm WarningFSDBrule36 min
Jun 24, 8:57 PM CDTSevere Thunderstorm WarningUNRTripp63 min
Jun 24, 9:00 PM CDTSevere Thunderstorm WarningABRHamlin45 min
Jun 24, 9:20 PM CDTSevere Thunderstorm WarningFSDGregory40 min
Jun 24, 9:22 PM CDTSevere Thunderstorm WarningFSDJerauld53 min
Jun 24, 9:27 PM CDTSevere Thunderstorm WarningFSDBrule48 min
Jun 24, 9:33 PM CDTSevere Thunderstorm WarningFSDBeadle42 min
Jun 24, 9:34 PM CDTSevere Thunderstorm WarningABRDeuel41 min
Jun 24, 9:44 PM CDTSevere Thunderstorm WarningABRLyman31 min
Jun 24, 9:56 PM CDTSevere Thunderstorm WarningABRDeuel19 min
Jun 24, 10:26 PM CDTSevere Thunderstorm WarningMPXLac qui Parle49 min
Jun 24, 10:38 PM CDTSevere Thunderstorm WarningFSDSanborn22 min
Jun 24, 10:55 PM CDTSevere Thunderstorm WarningFSDDavison35 min
Jun 24, 10:58 PM CDTSevere Thunderstorm WarningFSDHanson47 min
Jun 24, 11:00 PM CDTSevere Thunderstorm WarningFSDMiner45 min

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.8 hours before the alert went out and 79 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 2002-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1036 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 2002-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 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
1036 J/kg
Mixed-layer CIN
-343 J/kg
Mixed-layer LCL
1548 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 24, 4:00 PM CDTSevere Thunderstorm WatchSPCAnoka, Benton, Brown, Carver, Chippewa, Chisago and 21 more5 hr
Jun 23, 7:45 PM CDTSevere Thunderstorm WatchSPCBeadle, Brookings, Brown, Campbell, Clark, Codington and 17 more5 hr

Nearby

Severe Thunderstorm Watches in South Dakota, 2002Severe Thunderstorm Watches in Minnesota, 2002Severe Thunderstorm Watches in Iowa, 2002Every severe thunderstorm watch in 2002

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.