Alert archive / Nebraska / Mesoscale Discussions in 2004

Mesoscale Discussion 869

May 24, 200424 counties in Iowa; 11 counties in Missouri; 39 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 24, 2004, 2:39 PM CDT for 24 counties in Iowa; 11 counties in Missouri; 39 counties in Nebraska. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
May 24, 2004, 2:39 PM CDT (19:39 UTC)
Expired
May 24, 2004, 4:15 PM CDT
In force
96 min
Issued by
the Storm Prediction Center
All 74 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Decatur County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Madison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Ringgold County, IA, Shelby County, IA, Taylor County, IA, Union County, IA, Andrew County, MO, Atchison County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Mercer County, MO, Nodaway County, MO, Worth County, MO, Adams County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Platte County, NE, Polk County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thayer County, NE, Washington County, NE, Wheeler County, NE, York County, NE

The radar

The Omaha radar (KOAX), 29 km from the middle of the area, began a volume at 19:40 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

Omaha, NE (KOAX), launched 12:00Z, 7.7 hours before the alert went out and 29 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 12:00Z on 2004-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2004-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 210 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
731 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
210 m²/s²
0-3 km storm-relative helicity
289 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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
May 24, 9:30 AM CDTMesoscale DiscussionSPCAdams, Cass, Fremont, Mills, Montgomery, Page and 2 more2 hr
May 24, 10:10 AM CDTSevere Thunderstorm WatchSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more6 hr
May 24, 11:30 AM CDTTornado WatchSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 19 more11 hr
May 24, 1:24 PM CDTMesoscale DiscussionSPCBlack Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Chickasaw and 17 more96 min
May 24, 2:08 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more67 min
May 24, 2:35 PM CDTTornado WatchSPCAppanoose, Boone, Butler, Cerro Gordo, Clarke, Dallas and 26 more7 hr
May 24, 5:26 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Black Hawk and 61 more94 min
May 24, 5:45 PM CDTTornado WatchSPCAppanoose, Davis, Des Moines, Lee, Van Buren, Wayne5 hr
May 23, 8:40 PM CDTMesoscale DiscussionSPCJefferson, Saint Charles, Sainte Genevieve, Saint Francois, Saint Louis, City of Saint Louis65 min
May 23, 9:54 PM CDTMesoscale DiscussionSPCBarry, Christian, Crawford, Dent, Douglas, Greene and 11 more96 min
May 24, 12:37 PM CDTMesoscale DiscussionSPCBates, Buchanan, Caldwell, Carroll, Cass, Clay and 10 more83 min
May 24, 1:10 PM CDTTornado WatchSPCAndrew, Bates, Buchanan, Caldwell, Carroll, Cass and 11 more9 hr
May 24, 1:54 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Dunklin, Madison and 9 more96 min
May 24, 3:28 PM CDTMesoscale DiscussionSPCBates, Buchanan, Caldwell, Carroll, Cass, Clay and 10 more92 min
May 24, 6:57 PM CDTMesoscale DiscussionSPCPlatte48 min
May 24, 8:41 AM CDTMesoscale DiscussionSPCBoyd, Knox2 hr

Nearby

Mesoscale Discussions in Nebraska, 2004Mesoscale Discussions in Iowa, 2004Mesoscale Discussions in Missouri, 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; radar from the NEXRAD Level II archive.