Alert archive / Nebraska / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 541

July 3, 20044 states

The Storm Prediction Center issued this severe thunderstorm watch at Jul 3, 2004, 3:30 PM MDT for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jul 3, 2004, 3:30 PM MDT (21:30 UTC)
Expired
Jul 3, 2004, 10:00 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center
All 36 counties

Kit Carson County, CO, Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Arthur County, NE, Blaine County, NE, Brown County, NE, Chase County, NE, Cherry 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, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Perkins County, NE, Red Willow County, NE, Sheridan County, NE, Thomas County, NE, Bennett County, SD, Mellette County, SD, Todd County, SD, Tripp County, SD

The radar

The North Platte radar (KLNX), 140 km from the middle of the area, began a volume at 21:33 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

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

IssuedProductOfficeCountiesLasted
Jul 3, 3:54 PM MDTSevere Thunderstorm WarningLBFKeith66 min
Jul 3, 4:36 PM MDTSevere Thunderstorm WarningLBFCherry, Grant, Hooker24 min
Jul 3, 4:42 PM MDTTornado WarningLBFKeith33 min
Jul 3, 5:00 PM MDTSevere Thunderstorm WarningLBFLincoln, Perkins60 min
Jul 3, 5:05 PM MDTSevere Thunderstorm WarningLBFCherry, Grant, Hooker55 min
Jul 3, 5:19 PM MDTSevere Thunderstorm WarningBOUPhillips41 min
Jul 3, 5:45 PM MDTSevere Thunderstorm WarningLBFChase, Hayes60 min
Jul 3, 6:35 PM MDTSevere Thunderstorm WarningGLDHitchcock55 min
Jul 3, 6:40 PM MDTSevere Thunderstorm WarningLBFKeya Paha65 min
Jul 3, 7:11 PM MDTSevere Thunderstorm WarningGLDRed Willow64 min
Jul 3, 7:14 PM MDTSevere Thunderstorm WarningLBFBrown, Rock61 min
Jul 3, 7:22 PM MDTSevere Thunderstorm WarningGLDDecatur, Norton, Rawlins68 min
Jul 3, 7:26 PM MDTSevere Thunderstorm WarningGLDDecatur, Norton, Rawlins64 min
Jul 3, 7:30 PM MDTSevere Thunderstorm WarningGLDHitchcock45 min
Jul 3, 8:29 PM MDTSevere Thunderstorm WarningGLDDecatur, Rawlins46 min
Jul 3, 8:57 PM MDTSevere Thunderstorm WarningGLDSheridan, Thomas63 min
Jul 3, 9:16 PM MDTSevere Thunderstorm WarningGLDDecatur44 min
Jul 3, 10:00 PM MDTSevere Thunderstorm WarningGLDSheridan45 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 12:00Z, 9.5 hours before the alert went out and 87 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 12:00Z on 2004-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 75 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 12:00Z on 2004-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
75 J/kg
Mixed-layer CIN
-414 J/kg
Mixed-layer LCL
1760 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
113 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
Jul 2, 6:51 PM MDTMesoscale DiscussionSPCBaca, Bent, Prowers84 min
Jul 2, 8:19 PM MDTMesoscale DiscussionSPCBaca, Bent, Kiowa, Prowers56 min
Jul 3, 2:50 PM MDTMesoscale DiscussionSPCKit Carson, Logan, Phillips, Sedgwick, Washington, Yuma115 min
Jul 3, 5:27 PM MDTMesoscale DiscussionSPCCheyenne, Decatur, Graham, Jewell, Norton, Phillips and 3 more63 min
Jul 3, 5:55 PM MDTSevere Thunderstorm WatchSPCCloud, Graham, Jewell, Mitchell, Norton, Osborne and 5 more7 hr
Jul 3, 1:10 PM MDTMesoscale DiscussionSPCBrown, Day, Grant, McPherson, Marshall, Roberts3 hr

Nearby

Severe Thunderstorm Watches in Nebraska, 2004Severe Thunderstorm Watches in Kansas, 2004Severe Thunderstorm Watches in Colorado, 2004Every severe thunderstorm watch in 2004

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.