Alert archive / Iowa / Mesoscale Discussions in 2004

Mesoscale Discussion 1194

June 11, 20044 states

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2004, 4:55 PM CDT for 4 states. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Jun 11, 2004, 4:55 PM CDT (21:55 UTC)
Expired
Jun 11, 2004, 6:30 PM CDT
In force
95 min
Issued by
the Storm Prediction Center
All 44 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Dallas County, IA, Decatur County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Marion County, IA, Marshall County, IA, Montgomery County, IA, Page County, IA, Polk County, IA, Ringgold County, IA, Story County, IA, Taylor County, IA, Union County, IA, Warren County, IA, Wayne County, IA, Brown County, KS, Doniphan County, KS, Nemaha County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Clinton 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, Richardson County, NE

The radar

The Des Moines radar (KDMX), 90 km from the middle of the area, began a volume at 21:54 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, 9.9 hours before the alert went out and 158 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 2004-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1910 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 12:00Z on 2004-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
1910 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
636 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
161 m²/s²
Significant tornado parameter
1.5
Supercell composite
6.5

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
Jun 10, 7:58 PM CDTMesoscale DiscussionSPCClinton, Dubuque, Jackson, Scott92 min
Jun 11, 1:28 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 20 more62 min
Jun 11, 10:10 AM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 14 more95 min
Jun 11, 12:55 PM CDTMesoscale DiscussionSPCBremer, Buena Vista, Butler, Calhoun, Cerro Gordo, Cherokee and 23 more3 hr
Jun 11, 1:45 PM CDTTornado WatchSPCBlack Hawk, Bremer, Buena Vista, Butler, Calhoun, Cerro Gordo and 20 more5 hr
Jun 11, 3:03 PM CDTMesoscale DiscussionSPCBlack Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Chickasaw and 19 more87 min
Jun 11, 5:00 PM CDTTornado WatchSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Calhoun and 26 more6 hr
Jun 11, 5:56 PM CDTMesoscale DiscussionSPCJackson94 min
Jun 10, 7:58 PM CDTMesoscale DiscussionSPCBarton, Chase, Clay, Cloud, Decatur, Dickinson and 33 more92 min
Jun 11, 3:06 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 31 more84 min
Jun 11, 5:42 PM CDTMesoscale DiscussionSPCButler, Chautauqua, Cowley, Elk, Greenwood, Wilson and 1 more93 min
Jun 10, 8:19 PM CDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Boyd, Brown, Butler and 23 more86 min
Jun 10, 8:50 PM CDTSevere Thunderstorm WatchSPCAntelope, Blaine, Boone, Boyd, Brown, Butler and 28 more5 hr
Jun 10, 10:00 PM CDTSevere Thunderstorm WatchSPCAdams, Buffalo, Clay, Fillmore, Franklin, Furnas and 12 more5 hr
Jun 10, 11:43 PM CDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Boyd, Brown, Butler and 28 more92 min

Nearby

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