Alert archive / Nebraska / Mesoscale Discussions in 2005

Mesoscale Discussion 1634

July 4, 20054 counties in Colorado; 9 counties in Kansas; 10 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 4, 2005, 2:00 AM MDT for 4 counties in Colorado; 9 counties in Kansas; 10 counties in Nebraska. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 4, 2005, 2:00 AM MDT (08:00 UTC)
Expired
Jul 4, 2005, 4:00 AM MDT
In force
2 hr
Issued by
the Storm Prediction Center
All 23 counties

Kit Carson County, CO, Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Logan County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Chase County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, Perkins County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 120 km from the middle of the area, began a volume at 08:04 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.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 8.0 hours before the alert went out and 113 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 2005-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2161 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 2005-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 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
2161 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
1363 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
204 m²/s²
Significant tornado parameter
0.9
Supercell composite
10.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 4, 11:24 AM MDTMesoscale DiscussionSPCAdams, Arapahoe, Cheyenne, Elbert, Kit Carson, Lincoln and 7 more2 hr
Jul 4, 1:20 PM MDTSevere Thunderstorm WatchSPCAdams, Arapahoe, Elbert, Kit Carson, Logan, Morgan and 4 more8 hr
Jul 4, 2:35 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Cheyenne, Crowley, El Paso, Kiowa and 5 more6 hr
Jul 4, 4:21 PM MDTMesoscale DiscussionSPCBaca, Bent, Cheyenne, Crowley, El Paso, Kiowa and 5 more84 min
Jul 4, 5:44 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Denver, Elbert, Kit Carson, Logan and 6 more91 min
Jul 3, 6:20 PM MDTMesoscale DiscussionSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 6 more115 min
Jul 3, 6:45 PM MDTSevere Thunderstorm WatchSPCAllen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 9 more7 hr
Jul 3, 7:44 PM MDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 43 more31 min
Jul 3, 7:55 PM MDTSevere Thunderstorm WatchSPCBarber, Butler, Clark, Comanche, Cowley, Ford and 10 more4 hr
Jul 3, 7:56 PM MDTMesoscale DiscussionSPCAnderson, Atchison, Brown, Coffey, Doniphan, Douglas and 13 more64 min
Jul 3, 8:48 PM MDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Labette, Montgomery, Neosho and 1 more87 min
Jul 3, 10:25 PM MDTMesoscale DiscussionSPCBarber, Chautauqua, Clark, Comanche, Cowley, Harper and 4 more95 min
Jul 4, 12:40 AM MDTMesoscale DiscussionSPCChautauqua, Elk, Labette, Montgomery35 min
Jul 4, 3:42 PM MDTMesoscale DiscussionSPCCheyenne, Clark, Decatur, Edwards, Ellis, Finney and 30 more63 min
Jul 4, 4:00 PM MDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Finney, Gove, Grant, Gray and 18 more7 hr

Nearby

Mesoscale Discussions in Nebraska, 2005Mesoscale Discussions in Kansas, 2005Mesoscale Discussions in Colorado, 2005Every mesoscale discussion 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.