Alert archive / Nebraska / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 700

August 3, 200540 counties in Nebraska; Clay County, Union County, South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Aug 3, 2005, 7:15 PM CDT for 40 counties in Nebraska; Clay County, Union County, South Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Aug 3, 2005, 7:15 PM CDT (00:15 UTC)
Expired
Aug 4, 2005, 2:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 42 counties

Antelope County, NE, Arthur County, NE, Blaine County, NE, Boone County, NE, Brown County, NE, Cedar County, NE, Chase County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dakota County, NE, Dawson County, NE, Dixon County, NE, Dodge County, NE, Garfield County, NE, Grant County, NE, Greeley County, NE, Holt County, NE, Hooker County, NE, Howard County, NE, Keith County, NE, Knox County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Madison County, NE, McPherson County, NE, Merrick County, NE, Nance County, NE, Perkins County, NE, Pierce County, NE, Platte County, NE, Rock County, NE, Sherman County, NE, Stanton County, NE, Thomas County, NE, Thurston County, NE, Valley County, NE, Wayne County, NE, Wheeler County, NE, Clay County, SD, Union County, SD

The radar

The North Platte radar (KLNX), 154 km from the middle of the area, began a volume at 00:19 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

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

IssuedProductOfficeCountiesLasted
Aug 3, 7:25 PM CDTSevere Thunderstorm WarningGIDGreeley50 min
Aug 3, 7:33 PM CDTSevere Thunderstorm WarningGIDValley43 min
Aug 3, 7:36 PM CDTSevere Thunderstorm WarningLBFGarfield, Wheeler54 min
Aug 3, 7:43 PM CDTSevere Thunderstorm WarningLBFArthur, Garden, Grant62 min
Aug 3, 8:03 PM CDTFlash Flood WarningGIDValley6 hr
Aug 3, 8:15 PM CDTSevere Thunderstorm WarningLBFLincoln45 min
Aug 3, 8:30 PM CDTSevere Thunderstorm WarningLBFGarfield, Holt, Wheeler60 min
Aug 3, 8:40 PM CDTSevere Thunderstorm WarningOAXAntelope54 min
Aug 3, 8:41 PM CDTSevere Thunderstorm WarningLBFLincoln64 min
Aug 3, 8:42 PM CDTSevere Thunderstorm WarningLBFCuster63 min
Aug 3, 8:44 PM CDTSevere Thunderstorm WarningLBFArthur, McPherson61 min
Aug 3, 8:47 PM CDTSevere Thunderstorm WarningOAXCedar28 min
Aug 3, 8:57 PM CDTSevere Thunderstorm WarningLBFLincoln48 min
Aug 3, 9:11 PM CDTSevere Thunderstorm WarningOAXCedar, Wayne34 min
Aug 3, 9:16 PM CDTSevere Thunderstorm WarningFSDDixon59 min
Aug 3, 9:20 PM CDTSevere Thunderstorm WarningLBFCuster25 min
Aug 3, 9:32 PM CDTSevere Thunderstorm WarningFSDDixon58 min
Aug 3, 9:35 PM CDTSevere Thunderstorm WarningFSDUnion40 min
Aug 3, 9:43 PM CDTSevere Thunderstorm WarningLBFMcPherson32 min
Aug 3, 10:02 PM CDTSevere Thunderstorm WarningFSDDakota32 min
Aug 3, 10:04 PM CDTSevere Thunderstorm WarningOAXThurston26 min
Aug 3, 10:09 PM CDTSevere Thunderstorm WarningLBFLogan34 min
Aug 3, 10:39 PM CDTSevere Thunderstorm WarningOAXWayne11 min
Aug 3, 10:50 PM CDTSevere Thunderstorm WarningFSDClay, Union25 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.3 hours before the alert went out and 184 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, N. Platte/Lee Bi, NE at 00:00Z on 2005-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 568 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, N. Platte/Lee Bi, NE at 00:00Z on 2005-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939Sfc1 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
568 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
3221 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 3, 10:02 PM CDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Cedar, Cuming, Custer and 21 more88 min

Nearby

Severe Thunderstorm Watches in Nebraska, 2005Severe Thunderstorm Watches in South Dakota, 2005Every severe thunderstorm watch 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.