Alert archive / Nebraska / Mesoscale Discussions in 2004

Mesoscale Discussion 1530

July 5, 200421 counties in Kansas; 46 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2004, 7:10 PM CDT for 21 counties in Kansas; 46 counties in Nebraska. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Jul 5, 2004, 7:10 PM CDT (00:10 UTC)
Expired
Jul 5, 2004, 8:15 PM CDT
In force
65 min
Issued by
the Storm Prediction Center
All 67 counties

Clay County, KS, Cloud County, KS, Dickinson County, KS, Geary County, KS, Graham County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Phillips County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Rooks County, KS, Russell County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS, Adams County, NE, Antelope County, NE, Blaine County, NE, Boone County, NE, Buffalo County, NE, Butler County, NE, Clay County, NE, Colfax County, NE, Custer County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gage County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Jefferson County, NE, Kearney County, NE, Lancaster County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Platte County, NE, Polk County, NE, Red Willow County, NE, Saline County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Thomas County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE, York County, NE

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.2 hours before the alert went out and 221 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, Omaha, NE at 00:00Z on 2004-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 862 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, Omaha, NE at 00:00Z on 2004-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
862 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
767 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.6

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 5, 7:40 PM CDTSevere Thunderstorm WatchSPCCloud, Decatur, Graham, Jewell, Lincoln, Mitchell and 9 more6 hr
Jul 5, 7:54 PM CDTMesoscale DiscussionSPCAllen, Barber, Bourbon, Butler, Chautauqua, Cherokee and 17 more96 min
Jul 5, 8:50 PM CDTMesoscale DiscussionSPCEllis, Finney, Gove, Graham, Greeley, Hamilton and 16 more55 min
Jul 5, 10:00 PM CDTSevere Thunderstorm WatchSPCAtchison, Barber, Brown, Butler, Chase, Chautauqua and 39 more6 hr
Jul 5, 11:31 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Clay, Cloud, Comanche and 28 more59 min
Jul 5, 11:45 PM CDTSevere Thunderstorm WatchSPCBarber, Clark, Comanche, Grant, Harper, Haskell and 7 more4 hr
Jul 6, 1:16 AM CDTMesoscale DiscussionSPCAtchison, Barber, Brown, Butler, Chase, Chautauqua and 46 more119 min
Jul 6, 2:45 AM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Coffey, Douglas and 9 more2 hr
Jul 6, 3:10 AM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Atchison, Bourbon, Butler, Chase and 27 more5 hr
Jul 6, 5:18 AM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Butler, Chase and 26 more117 min

Nearby

Mesoscale Discussions in Nebraska, 2004Mesoscale Discussions in Kansas, 2004Every mesoscale discussion 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.