Alert archive / Indiana / Tornado Watches in 2004

Tornado Watch 267

May 23, 200435 counties in Illinois; 47 counties in Indiana; 4 counties in Missouri

The Storm Prediction Center issued this tornado watch at May 23, 2004, 5:30 PM CDT for 35 counties in Illinois; 47 counties in Indiana; 4 counties in Missouri. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 23, 2004, 5:30 PM CDT (22:30 UTC)
Expired
May 23, 2004, 11:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 86 counties

Bond County, IL, Calhoun County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Greene County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Lawrence County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Moultrie County, IL, Perry County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Shelby County, IL, Vermilion County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, Adams County, IN, Bartholomew County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Dearborn County, IN, Decatur County, IN, Delaware County, IN, Fayette County, IN, Fountain County, IN, Franklin County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Jackson County, IN, Jay County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Tipton County, IN, Union County, IN, Vermillion County, IN, Vigo County, IN, Wayne County, IN, Wells County, IN, City of Saint Louis, MO, Jefferson County, MO, Saint Charles County, MO, Saint Louis County, MO

The radar

The Lincoln radar (KILX), 120 km from the middle of the area, began a volume at 22:31 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

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

IssuedProductOfficeCountiesLasted
May 23, 5:36 PM CDTSevere Thunderstorm WarningLSXFranklin, Saint Charles, Warren39 min
May 23, 6:11 PM CDTSevere Thunderstorm WarningLSXFranklin, Saint Charles, Saint Louis, City of Saint Louis49 min
May 23, 6:13 PM CDTSevere Thunderstorm WarningLSXFranklin, Saint Charles, Saint Louis, City of Saint Louis47 min
May 23, 6:38 PM CDTTornado WarningILXChristian67 min
May 23, 6:57 PM CDTSevere Thunderstorm WarningLSXMonroe, Saint Clair48 min
May 23, 7:05 PM CDTSevere Thunderstorm WarningILXMacon55 min
May 23, 7:05 PM CDTSevere Thunderstorm WarningINDHenry, Rush, Shelby40 min
May 23, 7:18 PM CDTSevere Thunderstorm WarningLSXFranklin, Saint Charles12 min
May 23, 7:19 PM CDTTornado WarningILXShelby56 min
May 23, 7:25 PM CDTTornado WarningLSXMacoupin, Montgomery50 min
May 23, 7:30 PM CDTTornado WarningILXMoultrie60 min
May 23, 7:39 PM CDTTornado WarningILXChristian66 min
May 23, 7:42 PM CDTSevere Thunderstorm WarningLSXMonroe, Saint Clair48 min
May 23, 7:52 PM CDTSevere Thunderstorm WarningILXColes, Douglas53 min
May 23, 8:01 PM CDTTornado WarningILXColes44 min
May 23, 8:13 PM CDTSevere Thunderstorm WarningILXShelby62 min
May 23, 8:23 PM CDTSevere Thunderstorm WarningILXEdgar52 min
May 23, 8:25 PM CDTSevere Thunderstorm WarningLSXSaint Clair, Washington50 min
May 23, 8:33 PM CDTSevere Thunderstorm WarningILXClark57 min
May 23, 8:38 PM CDTSevere Thunderstorm WarningINDParke, Vermillion, Vigo37 min
May 23, 8:45 PM CDTTornado WarningILXChristian60 min
May 23, 9:01 PM CDTSevere Thunderstorm WarningILXColes59 min
May 23, 9:10 PM CDTFlash Flood WarningILXChristian6 hr
May 23, 9:13 PM CDTSevere Thunderstorm WarningINDClay, Vigo47 min
May 23, 9:35 PM CDTSevere Thunderstorm WarningINDPutnam40 min
May 23, 9:50 PM CDTSevere Thunderstorm WarningINDHendricks40 min
May 23, 10:07 PM CDTSevere Thunderstorm WarningINDMorgan38 min
May 23, 10:13 PM CDTSevere Thunderstorm WarningINDMarion47 min
May 23, 10:32 PM CDTSevere Thunderstorm WarningINDHamilton, Hancock, Henry, Madison, Rush43 min
May 23, 10:40 PM CDTSevere Thunderstorm WarningINDShelby35 min
May 23, 10:53 PM CDTSevere Thunderstorm WarningINDDelaware, Randolph37 min
May 23, 10:58 PM CDTSevere Thunderstorm WarningILNFayette, Wayne47 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

Lincoln, IL (KILX), launched 12:00Z, 10.5 hours before the alert went out and 92 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, Lincoln, IL at 12:00Z on 2004-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 435 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, Lincoln, IL at 12:00Z on 2004-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.19395878Sfc1 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
435 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
621 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 232229
SEL7  
SPC WW 232230
ILZ000-INZ000-MOZ000-240400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 267
NWS STORM PREDICTION CENTER NORMAN OK
530 PM CDT SUN MAY 23 2004

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

       CENTRAL ILLINOIS
       CENTRAL AND SOUTHERN INDIANA
       EAST CENTRAL MISSOURI

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 530 PM UNTIL 1100
PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 30 MILES WEST SOUTHWEST OF SAINT LOUIS
MISSOURI TO 40 MILES EAST SOUTHEAST OF MUNCIE INDIANA.

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 261. WATCH NUMBER 261 WILL NOT BE IN EFFECT AFTER 530
PM CDT. CONTINUE...WW 262...WW 263...WW 264...WW 265...WW 266...

DISCUSSION...SHEAR PROFILES AND STRONG INSTABILITY WILL CONTINUE TO
SUPPORT SUPERCELLS AND TORNADO POTENTIAL AS S/WV TROUGH ROTATES EWD
ACROSS THE AREA.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600.
MEAN STORM MOTION VECTOR 24040.


...HALES

392,0905 405,0844 390,0844 374,0905

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 22, 8:58 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, DuPage, Grundy and 23 more92 min
May 23, 12:24 AM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 32 more66 min
May 23, 12:40 AM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 27 more5 hr
May 23, 1:21 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Greene, Jersey and 6 more24 min
May 23, 1:40 AM CDTSevere Thunderstorm WatchSPCAdams, Brown, Cass, Fulton, Hancock, Logan and 8 more4 hr
May 23, 4:30 AM CDTMesoscale DiscussionSPCAdams, Boone, Brown, Bureau, Carroll, Cass and 44 more60 min
May 23, 10:45 AM CDTTornado WatchSPCClark, Clay, Coles, Crawford, Cumberland, Edgar and 19 more5 hr
May 23, 12:25 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Calhoun, Carroll, Cass and 31 more95 min
May 23, 12:45 PM CDTMesoscale DiscussionSPCClark, Clay, Coles, Crawford, Cumberland, Edgar and 18 more2 hr
May 23, 1:15 PM CDTTornado WatchSPCAdams, Brown, Calhoun, Cass, Fulton, Greene and 16 more6 hr
May 23, 2:05 PM CDTTornado WatchSPCBoone, Bureau, Carroll, DeKalb, DuPage, Grundy and 18 more8 hr
May 23, 2:53 PM CDTMesoscale DiscussionSPCIroquois, Vermilion67 min
May 23, 3:50 PM CDTTornado WatchSPCCook, DuPage, Iroquois, Kankakee, Vermilion, Will6 hr
May 23, 4:35 PM CDTSevere Thunderstorm WatchSPCMonroe5 hr
May 23, 5:00 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 28 more2 hr
May 23, 5:10 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, DuPage, Grundy and 17 more95 min
May 23, 6:30 PM CDTMesoscale DiscussionSPCCook, DuPage, Iroquois, Kankakee, Vermilion, Will2 hr
May 23, 9:45 AM CDTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 37 more2 hr
May 23, 10:10 AM CDTTornado WatchSPCAdams, Allen, Blackford, Carroll, Cass, Clinton and 21 more6 hr
May 23, 12:35 PM CDTMesoscale DiscussionSPCAdams, Allen, Blackford, Carroll, Cass, Clinton and 19 more115 min
May 22, 7:11 PM CDTMesoscale DiscussionSPCAtchison94 min
May 22, 10:40 PM CDTTornado WatchSPCAndrew, Atchison, Buchanan, Daviess, DeKalb, Gentry and 8 more5 hr
May 22, 11:33 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, Daviess, DeKalb, Gentry and 7 more87 min
May 23, 2:21 AM CDTMesoscale DiscussionSPCAdair, Andrew, Buchanan, Caldwell, Clinton, Daviess and 11 more54 min

Nearby

Tornado Watches in Indiana, 2004Tornado Watches in Illinois, 2004Tornado Watches in Missouri, 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.