Alert archive / Missouri / Tornado Watches in 2004

Tornado Watch 281

May 24, 20049 counties in Illinois; 6 counties in Iowa; 25 counties in Missouri

The Storm Prediction Center issued this tornado watch at May 24, 2004, 5:45 PM CDT for 9 counties in Illinois; 6 counties in Iowa; 25 counties in Missouri. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 24, 2004, 5:45 PM CDT (22:45 UTC)
Expired
May 24, 2004, 11:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 40 counties

Appanoose County, IA, Davis County, IA, Des Moines County, IA, Lee County, IA, Van Buren County, IA, Wayne County, IA, Adams County, IL, Brown County, IL, Calhoun County, IL, Hancock County, IL, Henderson County, IL, McDonough County, IL, Pike County, IL, Schuyler County, IL, Warren County, IL, Adair County, MO, Audrain County, MO, Boone County, MO, Carroll County, MO, Chariton County, MO, Clark County, MO, Cooper County, MO, Howard County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Linn County, MO, Macon County, MO, Marion County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO

The radar

The St Louis radar (KLSX), 208 km from the middle of the area, began a volume at 22:46 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

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

IssuedProductOfficeCountiesLasted
May 24, 6:26 PM CDTTornado WarningEAXLinn64 min
May 24, 7:04 PM CDTTornado WarningEAXSullivan41 min
May 24, 7:11 PM CDTFlash Flood WarningDMXAdair, Clarke, Lucas, Union, Wayne18 hr
May 24, 7:11 PM CDTTornado WarningEAXSullivan34 min
May 24, 7:14 PM CDTTornado WarningEAXMacon61 min
May 24, 7:30 PM CDTTornado WarningEAXLinn45 min
May 24, 7:42 PM CDTTornado WarningDMXAppanoose48 min
May 24, 7:53 PM CDTSevere Thunderstorm WarningDMXWayne67 min
May 24, 7:54 PM CDTTornado WarningLSXShelby66 min
May 24, 8:09 PM CDTFlash Flood WarningEAXLinn6 hr
May 24, 8:10 PM CDTTornado WarningEAXMacon50 min
May 24, 8:13 PM CDTFlash Flood WarningDMXAppanoose, Davis, Monroe, Wapello18 hr
May 24, 8:14 PM CDTTornado WarningDVNClark46 min
May 24, 8:22 PM CDTSevere Thunderstorm WarningEAXAndrew, Buchanan, Putnam53 min
May 24, 8:28 PM CDTSevere Thunderstorm WarningDMXAppanoose, Monroe57 min
May 24, 8:28 PM CDTTornado WarningDVNLee62 min
May 24, 8:44 PM CDTTornado WarningLSXShelby46 min
May 24, 8:45 PM CDTSevere Thunderstorm WarningEAXSullivan30 min
May 24, 8:52 PM CDTTornado WarningDMXAppanoose23 min
May 24, 8:53 PM CDTSevere Thunderstorm WarningEAXAdair37 min
May 24, 8:56 PM CDTTornado WarningDMXDavis49 min
May 24, 8:58 PM CDTSevere Thunderstorm WarningEAXMacon47 min
May 24, 9:04 PM CDTTornado WarningDVNHancock41 min
May 24, 9:10 PM CDTTornado WarningLSXMarion65 min
May 24, 9:29 PM CDTFlash Flood WarningEAXMacon6 hr
May 24, 9:30 PM CDTSevere Thunderstorm WarningLSXShelby45 min
May 24, 9:35 PM CDTFlash Flood WarningLSXShelby6 hr
May 24, 9:48 PM CDTSevere Thunderstorm WarningDVNHancock, McDonough42 min
May 24, 9:51 PM CDTSevere Thunderstorm WarningLSXMonroe24 min
May 24, 10:01 PM CDTTornado WarningLSXAdams, Pike59 min
May 24, 10:05 PM CDTSevere Thunderstorm WarningLSXRalls40 min
May 24, 10:11 PM CDTSevere Thunderstorm WarningLSXMonroe49 min
May 24, 10:12 PM CDTSevere Thunderstorm WarningLSXAdams48 min
May 24, 10:17 PM CDTSevere Thunderstorm WarningLSXMarion, Shelby58 min
May 24, 10:22 PM CDTSevere Thunderstorm WarningILXCass, Morgan, Schuyler, Scott53 min
May 24, 10:22 PM CDTSevere Thunderstorm WarningLSXBrown53 min
May 24, 10:27 PM CDTTornado WarningDVNMcDonough33 min
May 24, 10:27 PM CDTSevere Thunderstorm WarningEAXSaline63 min
May 24, 10:30 PM CDTTornado WarningLSXMarion60 min
May 24, 10:34 PM CDTSevere Thunderstorm WarningEAXRandolph41 min
May 24, 10:35 PM CDTFlash Flood WarningLSXMarion5 hr
May 24, 10:35 PM CDTTornado WarningLSXRalls25 min
May 24, 10:48 PM CDTFlash Flood WarningILXSchuyler6 hr
May 24, 10:51 PM CDTSevere Thunderstorm WarningLSXPike39 min
May 24, 10:52 PM CDTTornado WarningLSXPike53 min

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, 10.8 hours before the alert went out and 308 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 12:00Z on 2004-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 817 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 12:00Z on 2004-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 square meters per square second.1939587897Sfc1 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
817 J/kg
Mixed-layer CIN
-242 J/kg
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.4

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 242243
SEL1  
SPC WW 242245
IAZ000-ILZ000-MOZ000-250400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 281
NWS STORM PREDICTION CENTER NORMAN OK
545 PM CDT MON MAY 24 2004

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

       SOUTHEAST IOWA
       WEST CENTRAL ILLINOIS
       NORTHERN MISSOURI

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 545 PM UNTIL 1100
PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 4 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 55 MILES WEST SOUTHWEST OF KIRKSVILLE
MISSOURI TO 35 MILES EAST OF QUINCY ILLINOIS.

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 273...WW 275...WW 276...WW
277...WW 278...WW 279...WW 280...

DISCUSSION...TORNADIC SUPERCELLS NWRN MO EXPECTED TO TRACK EWD AS
WARM FRONT LIFTS NWD THRU NERN MO.  WITH VERY UNSTABLE AIRMASS AND
STRONG VEERING SHEAR PROFILES...POTENTIAL WILL EXIST FOR INTENSE
TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600.
MEAN STORM MOTION VECTOR 25030.


...HALES

404,0933 405,0903 385,0903 384,0933

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 8:40 PM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Clark, Clay, Clinton and 31 more65 min
May 24, 1:54 PM CDTMesoscale DiscussionSPCAlexander, Gallatin, Hardin, Jackson, Johnson, Massac and 5 more96 min
May 24, 5:26 PM CDTMesoscale DiscussionSPCAdams, Brown, Hancock, Henderson, McDonough, Pike and 2 more94 min
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, 2:39 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 18 more96 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, 3:28 PM CDTMesoscale DiscussionSPCBates, Buchanan, Caldwell, Carroll, Cass, Clay and 10 more92 min
May 24, 6:57 PM CDTMesoscale DiscussionSPCPlatte48 min

Nearby

Tornado Watches in Missouri, 2004Tornado Watches in Illinois, 2004Tornado Watches in Iowa, 2004Every 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.