Alert archive / Kansas / Mesoscale Discussions in 2004

Mesoscale Discussion 985

May 29, 20045 states

The Storm Prediction Center issued this mesoscale discussion at May 29, 2004, 11:23 PM CDT for 5 states. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued
May 29, 2004, 11:23 PM CDT (04:23 UTC)
Expired
May 30, 2004, 12:30 AM CDT
In force
67 min
Issued by
the Storm Prediction Center
All 134 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Carroll County, IA, Cass County, IA, Crawford County, IA, Fremont County, IA, Guthrie County, IA, Harrison 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, Woodbury County, IA, Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Brown County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Cherokee County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Cowley County, KS, Crawford County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Elk County, KS, Ellsworth County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Lincoln County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, Marshall County, KS, McPherson County, KS, Miami County, KS, Mitchell County, KS, Montgomery County, KS, Morris County, KS, Nemaha County, KS, Neosho County, KS, Osage County, KS, Ottawa County, KS, Pottawatomie County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Riley County, KS, Saline County, KS, Sedgwick County, KS, Shawnee County, KS, Sumner County, KS, Wabaunsee County, KS, Washington County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell 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, Nodaway County, MO, Platte County, MO, Worth County, MO, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Madison County, NE, Nance County, NE, Nemaha 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, Thurston County, NE, Washington County, NE, Wayne County, NE, York County, NE, Craig County, OK, Kay County, OK, Mayes County, OK, Noble County, OK, Nowata County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Rogers County, OK, Tulsa County, OK, Washington County, OK

The radar

The Topeka radar (KTWX), 18 km from the middle of the area, began a volume at 04:26 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, 4.4 hours before the alert went out and 68 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.

244 
ACUS11 KWNS 300423
SWOMCD
SPC MCD 300423 
MOZ000-IAZ000-OKZ000-KSZ000-NEZ000-SDZ000-300530-

MESOSCALE DISCUSSION 0985
NWS STORM PREDICTION CENTER NORMAN OK
1123 PM CDT SAT MAY 29 2004

AREAS AFFECTED...NERN OK TO SERN NEB/SWRN IA

CONCERNING...TORNADO WATCH 327...328...

VALID 300423Z - 300530Z

ARCING LINEAR MCS HAS EVOLVED ACROSS CENTRAL NEB INTO NRN KS.  THIS
ACTIVITY IS SURGING NEWD ACROSS NEB AT ROUGHLY 40KT...WITH SOMEWHAT
SLOWER MOVEMENT ALONG THE COLD FRONT INTO KS.  IT APPEARS CONVECTIVE
DEVELOPMENT MAY STRUGGLE TO BUILD SOUTH OF INTERSTATE 70 IN THE NEAR
TERM.  OTHER TORNADIC ISOLATED STORMS PERSIST JUST EAST OF LOW LEVEL
 JET ACROSS NWRN MO.  THIS MAY EXPLAIN THE VERY SLOW MOVEMENT AND
THE RELUCTANCE FOR THIS ACTIVITY TO LIFT SIGNIFICANTLY NEWD.

FARTHER SOUTH...MORE DISCRETE LONGER LIVED TORNADIC SUPERCELLS HAVE
YET TO DISSIPATE ACROSS SRN KS AND NRN OK...ESPECIALLY THE
LINCOLN/CREEK COUNTIES OK THUNDERSTORM.  VERY STRONG LOW LEVEL SHEAR
APPEARS TO BE AIDING TORNADIC POTENTIAL WITH THIS SUPERCELL.

..DARROW.. 05/30/2004

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...SGF...DMX...EAX...TSA...FSD...OAX...TOP...ICT...OUN...GID...

35849711 37369769 38599870 40589783 42039815 42609652
42089453 40089350 38619446 36079509

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 30, 2:38 AM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Jasper, Keokuk and 13 more97 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
May 30, 12:15 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, McCurtain, Pushmataha90 min
May 30, 12:35 PM CDTTornado WatchSPCBryan, Choctaw, McCurtain, Pushmataha6 hr
May 30, 5:53 PM CDTMesoscale DiscussionSPCChoctaw, LeFlore, McCurtain, Pushmataha97 min
May 30, 6:10 PM CDTTornado WatchSPCChoctaw, LeFlore, McCurtain, Pushmataha5 hr

Nearby

Mesoscale Discussions in Kansas, 2004Mesoscale Discussions in Nebraska, 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.