Alert archive / South Dakota / Tornado Watches in 2007

Tornado Watch 353

June 6, 200711 counties in Nebraska; 25 counties in South Dakota

The Storm Prediction Center issued this tornado watch at Jun 6, 2007, 3:45 PM CDT for 11 counties in Nebraska; 25 counties in South Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 6, 2007, 3:45 PM CDT (20:45 UTC)
Expired
Jun 6, 2007, 11:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
70 kt
All 36 counties

Blaine County, NE, Brown County, NE, Cherry County, NE, Garden County, NE, Grant County, NE, Hooker County, NE, Keya Paha County, NE, Loup County, NE, Rock County, NE, Sheridan County, NE, Thomas County, NE, Bennett County, SD, Brule County, SD, Buffalo County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Gregory County, SD, Haakon County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jackson County, SD, Jones County, SD, Lyman County, SD, McPherson County, SD, Mellette County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Walworth County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 152 km from the middle of the area, began a volume at 20:46 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
70%
One or more EF2 to EF5 tornadoes
40%
Ten or more severe wind reports
80%
One or more gusts of 65 knots or more
60%
Ten or more severe hail reports
80%
One or more hailstones of 2 inches or more
50%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 6, 3:46 PM CDTSevere Thunderstorm WarningLBFSheridan59 min
Jun 6, 4:17 PM CDTTornado WarningUNRBennett, Jackson58 min
Jun 6, 4:37 PM CDTTornado WarningLBFSheridan38 min
Jun 6, 5:09 PM CDTTornado WarningUNRJackson66 min
Jun 6, 5:13 PM CDTSevere Thunderstorm WarningLBFCherry, Sheridan32 min
Jun 6, 5:26 PM CDTSevere Thunderstorm WarningUNRBennett64 min
Jun 6, 5:43 PM CDTSevere Thunderstorm WarningLBFCherry32 min
Jun 6, 5:59 PM CDTTornado WarningUNRJackson48 min
Jun 6, 6:13 PM CDTSevere Thunderstorm WarningUNRHaakon62 min
Jun 6, 6:26 PM CDTSevere Thunderstorm WarningUNRMellette, Todd64 min
Jun 6, 6:36 PM CDTTornado WarningABRJones39 min
Jun 6, 6:53 PM CDTSevere Thunderstorm WarningABRStanley52 min
Jun 6, 6:58 PM CDTSevere Thunderstorm WarningUNRMellette, Todd, Tripp45 min
Jun 6, 7:01 PM CDTSevere Thunderstorm WarningABRJones, Stanley29 min
Jun 6, 7:06 PM CDTSevere Thunderstorm WarningABRJones, Lyman54 min
Jun 6, 7:25 PM CDTSevere Thunderstorm WarningUNRHaakon, Ziebach65 min
Jun 6, 8:01 PM CDTSevere Thunderstorm WarningLBFBlaine, Logan59 min
Jun 6, 8:07 PM CDTSevere Thunderstorm WarningLBFBrown, Keya Paha, Rock53 min
Jun 6, 8:07 PM CDTSevere Thunderstorm WarningABRDewey, Potter38 min
Jun 6, 8:16 PM CDTSevere Thunderstorm WarningABRPotter, Sully44 min
Jun 6, 8:35 PM CDTSevere Thunderstorm WarningABRDewey25 min
Jun 6, 8:38 PM CDTSevere Thunderstorm WarningFSDAurora, Beadle, Brule, Jerauld26 min
Jun 6, 8:40 PM CDTSevere Thunderstorm WarningABRCorson, Dewey, Walworth50 min
Jun 6, 8:44 PM CDTSevere Thunderstorm WarningLBFGarfield, Holt, Loup61 min
Jun 6, 8:48 PM CDTSevere Thunderstorm WarningLBFBlaine57 min
Jun 6, 8:53 PM CDTSevere Thunderstorm WarningLBFHolt, Rock52 min
Jun 6, 8:54 PM CDTSevere Thunderstorm WarningFSDGregory32 min
Jun 6, 8:58 PM CDTSevere Thunderstorm WarningABRCampbell, Edmunds, Faulk, Potter, Walworth32 min
Jun 6, 9:02 PM CDTSevere Thunderstorm WarningABRCampbell, Corson, Dewey43 min
Jun 6, 9:11 PM CDTSevere Thunderstorm WarningABRCampbell, Corson, Walworth39 min
Jun 6, 9:38 PM CDTSevere Thunderstorm WarningLBFLoup52 min
Jun 6, 9:41 PM CDTSevere Thunderstorm WarningABREdmunds, McPherson49 min
Jun 6, 9:53 PM CDTSevere Thunderstorm WarningABRBrown, Edmunds, McPherson43 min
Jun 6, 10:07 PM CDTSevere Thunderstorm WarningABRMcPherson23 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 8.8 hours before the alert went out and 153 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, Rapid City, SD at 12:00Z on 2007-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1559 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, Rapid City, SD at 12:00Z on 2007-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.19395878Sfc1 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
1559 J/kg
Mixed-layer CIN
-237 J/kg
Mixed-layer LCL
2235 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 5, 7:22 PM CDTMesoscale DiscussionSPCArthur, Box Butte, Chase, Cheyenne, Dawes, Deuel and 11 more113 min
Jun 6, 1:04 PM CDTTornado WatchSPCBox Butte, Dawes, Sioux6 hr
Jun 6, 3:31 PM CDTMesoscale DiscussionSPCCherry119 min
Jun 6, 6:56 PM CDTMesoscale DiscussionSPCAntelope, Arthur, Blaine, Boone, Boyd, Brown and 24 more2 hr
Jun 5, 11:47 PM CDTMesoscale DiscussionSPCBuffalo, Corson, Dewey, Hughes, Hyde, Jones and 9 more88 min
Jun 6, 12:36 PM CDTMesoscale DiscussionSPCButte, Custer, Fall River, Lawrence114 min
Jun 6, 6:19 PM CDTMesoscale DiscussionSPCButte, Custer, Fall River, Harding, Lawrence, Meade and 3 more26 min
Jun 6, 6:47 PM CDTTornado WatchSPCButte, Harding, Meade, Perkins7 hr

Nearby

Tornado Watches in South Dakota, 2007Tornado Watches in Nebraska, 2007Every tornado watch in 2007

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.