Alert archive / Missouri / Tornado Watches in 2004

Tornado Watch 326

May 29, 200421 counties in Iowa; 11 counties in Kansas; 24 counties in Missouri

The Storm Prediction Center issued this tornado watch at May 29, 2004, 4:35 PM CDT for 21 counties in Iowa; 11 counties in Kansas; 24 counties in Missouri. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: May 29, 2004, 4:35 PM CDT (21:35 UTC)
Expired: May 29, 2004, 10:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 56 counties

Adair County, IA, Adams County, IA, Boone County, IA, Cass County, IA, Clarke County, IA, Dallas County, IA, Decatur County, IA, Greene County, IA, Guthrie County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Marion County, IA, Marshall County, IA, Polk County, IA, Ringgold County, IA, Story County, IA, Taylor County, IA, Union County, IA, Warren County, IA, Wayne County, IA, Anderson County, KS, Atchison County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Andrew County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Carroll 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, Henry County, MO, Holt County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Ray County, MO, Worth County, MO

The radar

The Pleasant Hill radar (KEAX), 101 km from the middle of the area, began a volume at 21:38 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.

Warnings issued inside it

18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 29, 4:48 PM CDT	Tornado Warning	EAX	Atchison	42 min
May 29, 4:51 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth	39 min
May 29, 5:15 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Platte	75 min
May 29, 5:28 PM CDT	Tornado Warning	EAX	Atchison	92 min
May 29, 5:47 PM CDT	Tornado Warning	EAX	Buchanan	88 min
May 29, 6:51 PM CDT	Tornado Warning	EAX	Clinton	84 min
May 29, 6:55 PM CDT	Tornado Warning	EAX	Clay	95 min
May 29, 7:19 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan	41 min
May 29, 7:25 PM CDT	Tornado Warning	EAX	DeKalb	65 min
May 29, 7:42 PM CDT	Tornado Warning	EAX	Buchanan	48 min
May 29, 7:47 PM CDT	Severe Thunderstorm Warning	EAX	Platte	58 min
May 29, 8:09 PM CDT	Flash Flood Warning	EAX	Buchanan, Clinton	8 hr
May 29, 8:13 PM CDT	Tornado Warning	EAX	Clinton	62 min
May 29, 8:31 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, DeKalb	59 min
May 29, 8:58 PM CDT	Severe Thunderstorm Warning	EAX	Andrew	62 min
May 29, 9:02 PM CDT	Tornado Warning Emergency	EAX	DeKalb	88 min
May 29, 9:10 PM CDT	Tornado Warning	EAX	Caldwell, Clinton, Daviess	95 min
May 29, 9:20 PM CDT	Flash Flood Warning	EAX	DeKalb	7 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 9.6 hours before the alert went out and 125 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2060 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 792 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: -30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS20 KWNS 292135
SEL6  
SPC WW 292135
IAZ000-KSZ000-MOZ000-300300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 326
NWS STORM PREDICTION CENTER NORMAN OK
435 PM CDT SAT MAY 29 2004

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       SOUTH CENTRAL IOWA
       FAR EASTERN KANSAS
       NORTHWEST MISSOURI

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 435 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 55 STATUTE MILES EAST AND WEST
OF A LINE FROM 55 MILES SOUTH OF OLATHE KANSAS TO 45 MILES NORTH
OF DES MOINES IOWA.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 321...WW 322...WW 323...WW
324...WW 325...

DISCUSSION...SUPERCELLS HAVE RECENTLY DEVELOPED JUST WEST OF THE MO
RIVER IN NERN KS.  OTHER STORMS ARE EXPECTED TO FORM IN A VERY
UNSTABLE AND WEAKLY CAPPED AIR MASS OVER NERN KS/SERN NEB/FAR NWRN
MO.  SHEAR AND INSTABILITY REMAIN FAVORABLE FOR INTENSE SUPERCELLS
ONCE STORMS BECOME ROOTED INTO THE BOUNDARY LAYER...AND SHIFT ESEWD
ACROSS WW THIS EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600.
MEAN STORM MOTION VECTOR 23020.


...EVANS

380,0954 421,0944 421,0923 380,0934

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 28, 7:31 PM CDT	Mesoscale Discussion	SPC	Cherokee, Crawford, Harrison, Ida, Lyon, Monona and 6 more	89 min
May 28, 9:03 PM CDT	Mesoscale Discussion	SPC	Audubon, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 24 more	57 min
May 28, 9:50 PM CDT	Severe Thunderstorm Watch	SPC	Buena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 15 more	5 hr
May 28, 11:41 PM CDT	Mesoscale Discussion	SPC	Buena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 16 more	94 min
May 29, 12:42 PM CDT	Mesoscale Discussion	SPC	Adair, Appanoose, Audubon, Boone, Buena Vista, Calhoun and 45 more	93 min
May 29, 2:05 PM CDT	Tornado Watch	SPC	Buena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 13 more	8 hr
May 29, 3:05 PM CDT	Tornado Watch	SPC	Carroll, Crawford, Fremont, Harrison, Mills, Monona and 4 more	7 hr
May 29, 5:01 PM CDT	Mesoscale Discussion	SPC	Buena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 13 more	119 min
May 29, 1:02 PM CDT	Mesoscale Discussion	SPC	Clay, Cloud, Dickinson, Ellsworth, Graham, Jewell and 14 more	118 min
May 29, 1:54 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Greeley, Logan, Rawlins, Sherman and 2 more	3 hr
May 29, 2:55 PM CDT	Tornado Watch	SPC	Barber, Barton, Butler, Chase, Clark, Comanche and 20 more	7 hr
May 29, 3:55 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Decatur, Gove, Greeley, Lane, Logan and 8 more	6 hr
May 29, 4:57 PM CDT	Mesoscale Discussion	SPC	Barber, Harper, Harvey, Kingman, Pratt, Reno and 3 more	63 min
May 29, 5:16 PM CDT	Mesoscale Discussion	SPC	Cloud, Jewell, Mitchell, Republic, Washington	59 min
May 29, 5:53 PM CDT	Mesoscale Discussion	SPC	Decatur, Logan, Rawlins, Sheridan, Sherman, Thomas and 1 more	67 min
May 29, 6:37 PM CDT	Mesoscale Discussion	SPC	Buchanan, Caldwell, Carroll, Clay, Clinton, Daviess and 6 more	53 min

Nearby

Tornado Watches in Missouri, 2004 Tornado Watches in Iowa, 2004 Tornado Watches in Kansas, 2004 Every tornado watch 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.