Alert archive / Kansas / Mesoscale Discussions in 2004

Mesoscale Discussion 986

May 30, 200419 counties in Iowa; 27 counties in Kansas; 23 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 30, 2004, 2:38 AM CDT for 19 counties in Iowa; 27 counties in Kansas; 23 counties in Missouri. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued
May 30, 2004, 2:38 AM CDT (07:38 UTC)
Expired
May 30, 2004, 4:15 AM CDT
In force
97 min
Issued by
the Storm Prediction Center
All 69 counties

Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Jasper County, IA, Keokuk County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Allen County, KS, Anderson County, KS, Atchison County, KS, Brown County, KS, Butler County, KS, Chase County, KS, Coffey County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Greenwood County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, Miami County, KS, Morris County, KS, Osage County, KS, Sedgwick County, KS, Shawnee County, KS, Wabaunsee County, KS, Woodson County, KS, Wyandotte County, KS, Andrew County, MO, Buchanan County, MO, Caldwell County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Jackson County, MO, Linn County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Putnam County, MO, Ray County, MO, Schuyler County, MO, Sullivan County, MO, Worth County, MO

The radar

The Pleasant Hill radar (KEAX), 117 km from the middle of the area, began a volume at 07:42 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

Topeka, KS (KTOP), launched 00:00Z, 7.6 hours before the alert went out and 106 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, Topeka, KS at 00:00Z on 2004-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2909 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, Topeka, KS at 00:00Z on 2004-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 163 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
2909 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
1169 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
163 m²/s²
0-3 km storm-relative helicity
282 m²/s²
Significant tornado parameter
2.8
Supercell composite
18.2

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 29, 8:45 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 15 more60 min
May 29, 9:21 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 13 more54 min
May 29, 9:35 PM CDTTornado WatchSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 26 more6 hr
May 29, 11:23 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 13 more67 min
May 30, 9:40 AM CDTMesoscale DiscussionSPCAppanoose, Davis, Lee, Van Buren3 hr
May 30, 12:13 PM CDTMesoscale DiscussionSPCCedar, Clayton, Clinton, Delaware, Des Moines, Dubuque and 14 more2 hr
May 30, 12:25 PM CDTTornado WatchSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 37 more7 hr
May 30, 3:16 PM CDTMesoscale DiscussionSPCClinton, Des Moines, Dubuque, Jackson, Louisa, Muscatine and 1 more119 min
May 29, 8:27 PM CDTMesoscale DiscussionSPCButler, Chase, Chautauqua, Coffey, Cowley, Elk and 9 more63 min
May 29, 9:45 PM CDTTornado WatchSPCAllen, Anderson, Barber, Bourbon, Butler, Chase and 25 more6 hr
May 30, 10:50 AM CDTTornado WatchSPCBourbon, Cherokee, Crawford, Linn8 hr
May 30, 10:04 AM CDTMesoscale DiscussionSPCCape Girardeau, Mississippi, Perry, Scott2 hr
May 30, 12:53 PM CDTMesoscale DiscussionSPCAdair, Audrain, Barry, Benton, Boone, Callaway and 40 more2 hr
May 30, 1:05 PM CDTTornado WatchSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 23 more6 hr
May 30, 2:44 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Christian, Crawford and 26 more2 hr
May 30, 3:20 PM CDTTornado WatchSPCDunklin, New Madrid, Pemiscot, Ripley8 hr
May 30, 5:10 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 23 more95 min
May 30, 6:40 PM CDTTornado WatchSPCBollinger, Butler, Cape Girardeau, Madison, Mississippi, New Madrid and 6 more6 hr

Nearby

Mesoscale Discussions in Kansas, 2004Mesoscale Discussions in Missouri, 2004Mesoscale Discussions in Iowa, 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.