Alert archive / Nebraska / Severe Thunderstorm Watches in 2007

Severe Thunderstorm Watch 382

June 11, 20075 counties in Colorado; 23 counties in Nebraska; 16 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 11, 2007, 2:47 PM MDT for 5 counties in Colorado; 23 counties in Nebraska; 16 counties in South Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 11, 2007, 2:47 PM MDT (20:47 UTC)
Expired
Jun 11, 2007, 10:00 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
70 kt
All 44 counties

Logan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Yuma County, CO, Arthur County, NE, Box Butte County, NE, Chase County, NE, Cherry County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hitchcock County, NE, Hooker County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Morrill County, NE, Perkins County, NE, Red Willow County, NE, Sheridan County, NE, Thomas County, NE, Bennett County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Haakon County, SD, Hughes County, SD, Jackson County, SD, Jones County, SD, Lyman County, SD, Mellette County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Walworth County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 143 km from the middle of the area, began a volume at 20:47 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
10%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 11, 2:47 PM MDTSevere Thunderstorm WarningLBFGarden43 min
Jun 11, 2:48 PM MDTSevere Thunderstorm WarningCYSCheyenne42 min
Jun 11, 3:22 PM MDTSevere Thunderstorm WarningLBFCherry, Sheridan38 min
Jun 11, 3:28 PM MDTSevere Thunderstorm WarningUNRBennett77 min
Jun 11, 3:30 PM MDTSevere Thunderstorm WarningLBFGarden31 min
Jun 11, 3:32 PM MDTSevere Thunderstorm WarningGLDDundy13 min
Jun 11, 3:34 PM MDTSevere Thunderstorm WarningUNRJackson71 min
Jun 11, 3:36 PM MDTSevere Thunderstorm WarningLBFChase54 min
Jun 11, 3:40 PM MDTSevere Thunderstorm WarningUNR50 min
Jun 11, 4:05 PM MDTSevere Thunderstorm WarningGLDDundy25 min
Jun 11, 4:07 PM MDTSevere Thunderstorm WarningLBFDeuel, Garden53 min
Jun 11, 4:15 PM MDTSevere Thunderstorm WarningLBFSheridan45 min
Jun 11, 4:22 PM MDTSevere Thunderstorm WarningBOUSedgwick38 min
Jun 11, 4:28 PM MDTSevere Thunderstorm WarningLBFChase62 min
Jun 11, 4:30 PM MDTSevere Thunderstorm WarningUNRHaakon75 min
Jun 11, 4:30 PM MDTSevere Thunderstorm WarningUNR45 min
Jun 11, 4:35 PM MDTSevere Thunderstorm WarningUNRJackson55 min
Jun 11, 4:43 PM MDTSevere Thunderstorm WarningUNRZiebach62 min
Jun 11, 4:44 PM MDTSevere Thunderstorm WarningUNRBennett76 min
Jun 11, 4:56 PM MDTSevere Thunderstorm WarningLBFSheridan49 min
Jun 11, 4:58 PM MDTSevere Thunderstorm WarningBOUSedgwick47 min
Jun 11, 4:59 PM MDTSevere Thunderstorm WarningLBFDeuel, Garden46 min
Jun 11, 5:00 PM MDTFlash Flood WarningUNRBennett3 hr
Jun 11, 5:14 PM MDTSevere Thunderstorm WarningUNR50 min
Jun 11, 5:18 PM MDTSevere Thunderstorm WarningGLDDundy57 min
Jun 11, 5:19 PM MDTSevere Thunderstorm WarningABRCorson56 min
Jun 11, 5:32 PM MDTSevere Thunderstorm WarningLBFChase58 min
Jun 11, 5:36 PM MDTSevere Thunderstorm WarningUNRJackson, Mellette57 min
Jun 11, 5:40 PM MDTSevere Thunderstorm WarningUNRZiebach65 min
Jun 11, 5:41 PM MDTFlash Flood WarningLBFChase3 hr
Jun 11, 5:47 PM MDTSevere Thunderstorm WarningBOUSedgwick43 min
Jun 11, 5:48 PM MDTSevere Thunderstorm WarningCYSBox Butte42 min
Jun 11, 5:49 PM MDTSevere Thunderstorm WarningABRDewey56 min
Jun 11, 5:58 PM MDTFlash Flood WarningBOUSedgwick3 hr
Jun 11, 6:14 PM MDTSevere Thunderstorm WarningABRCorson, Dewey46 min
Jun 11, 6:28 PM MDTSevere Thunderstorm WarningLBFChase62 min
Jun 11, 6:39 PM MDTSevere Thunderstorm WarningGLDYuma36 min
Jun 11, 6:48 PM MDTSevere Thunderstorm WarningABRDewey57 min
Jun 11, 6:53 PM MDTSevere Thunderstorm WarningUNRTodd82 min
Jun 11, 6:58 PM MDTSevere Thunderstorm WarningABRCampbell, Corson, Walworth62 min
Jun 11, 7:01 PM MDTFlash Flood WarningLBFChase119 min
Jun 11, 7:11 PM MDTFlash Flood WarningLBFChase, Hayes6 hr
Jun 11, 8:05 PM MDTSevere Thunderstorm WarningBOUPhillips25 min
Jun 11, 8:34 PM MDTSevere Thunderstorm WarningLBFPerkins41 min
Jun 11, 8:58 PM MDTFlash Flood WarningBOUSedgwick3 hr
Jun 11, 9:31 PM MDTFlash Flood WarningLBFPerkins4 hr

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 139 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 2007-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 114 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 2007-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -32 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
114 J/kg
Mixed-layer CIN
-470 J/kg
Mixed-layer LCL
2676 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-32 m²/s²
0-3 km storm-relative helicity
55 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 11, 2:30 PM MDTMesoscale DiscussionSPCKit Carson, Logan, Phillips, Sedgwick, Washington, Yuma90 min
Jun 10, 10:19 PM MDTMesoscale DiscussionSPCBrown, Campbell, Day, Edmunds, McPherson, Marshall and 2 more116 min
Jun 10, 10:47 PM MDTSevere Thunderstorm WatchSPCBrown, Campbell, Clark, Codington, Corson, Day and 10 more6 hr
Jun 11, 1:53 PM MDTMesoscale DiscussionSPCButte, Corson, Custer, Dewey, Haakon, Harding and 8 more2 hr
Jun 11, 2:26 PM MDTSevere Thunderstorm WatchSPCButte, Harding, Lawrence, Meade, Perkins8 hr
Jun 11, 4:53 PM MDTMesoscale DiscussionSPCCorson, Dewey, Haakon, Harding, Jackson, Meade and 3 more97 min

Nearby

Severe Thunderstorm Watches in Nebraska, 2007Severe Thunderstorm Watches in South Dakota, 2007Severe Thunderstorm Watches in Colorado, 2007Every severe thunderstorm 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.