Alert archive / Illinois / Tornado Warnings in 2004

Tornado Warning 39, NWS St. Louis, MO

May 30, 2004Monroe County, Illinois; Jefferson County, Missouri

NWS St. Louis, MO issued this tornado warning at May 30, 2004, 4:51 PM CDT for Monroe County, Illinois; Jefferson County, Missouri. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 30, 2004, 4:51 PM CDT (21:51 UTC)
Expired
May 30, 2004, 5:30 PM CDT
In force
39 min
Issued by
NWS St. Louis, MO
Area
Counties, with a storm outline in the text

Counties Monroe County, IL, Jefferson County, MO

The radar

The St Louis radar (KLSX), 65 km from the middle of the area, began a volume at 21:54 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 30, 1:05 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.9 hours before the alert went out and 261 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 2004-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1629 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 2004-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 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
1629 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
569 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
1.4
Supercell composite
8.9

Open this sounding in Storm Lab

The text

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

938 
WFUS53 KLSX 302151
TORLSX
ILC133-MOC099-302230-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
451 PM CDT SUN MAY 30 2004

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI
  MONROE COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 530 PM CDT

* AT 451 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 6 MILES SOUTHWEST OF
  CHALFIN BRIDGE. THE STORM WAS MOVING EAST AT 45 MPH...AND MAY
  PRODUCE A TORNADO AT ANY TIME

* LOCATIONS IMPACTED INCLUDE...
  MONROE CITY
  FULTS
  MAEYSTOWN
  MADONNAVILLE
  FOSTER POND
  RENAULT
  BURKSVILLE
  WARTBURG
  WATERLOO
  NEW DESIGN

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW MOVE TO A
BASEMENT...UNDERGROUND STORM SHELTER...OR AN INTERIOR ROOM OR HALLWAY
ON THE LOWEST LEVEL OF A STURDY BUILDING.

THIS STORM WILL ALSO PRODUCE LARGE DESTRUCTIVE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH.

LAT...LON 3821 9046 3804 9038 3816 9004 3839 9012

$$

CVKING/FG

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 3:27 PM CDTTornado WarningLSXAdams48 min
May 30, 4:04 PM CDTSevere Thunderstorm WarningLSXBond, Madison, Montgomery41 min
May 30, 4:06 PM CDTSevere Thunderstorm WarningLSXBrown39 min
May 30, 4:09 PM CDTSevere Thunderstorm WarningLSXClinton, Saint Clair51 min
May 30, 4:13 PM CDTTornado WarningLSXBond, Madison, Montgomery47 min
May 30, 4:20 PM CDTTornado WarningLSXBond, Clinton, Madison, Saint Clair40 min
May 30, 4:32 PM CDTSevere Thunderstorm WarningLSXMonroe28 min
May 30, 4:44 PM CDTSevere Thunderstorm WarningLSXFayette, Montgomery46 min
May 30, 4:47 PM CDTTornado WarningLSXBrown28 min
May 30, 4:48 PM CDTTornado WarningLSXFayette, Montgomery42 min
May 30, 4:55 PM CDTTornado WarningLSXBond, Clinton, Fayette, Marion50 min
May 30, 5:09 PM CDTSevere Thunderstorm WarningLSXMadison36 min
May 30, 5:19 PM CDTSevere Thunderstorm WarningLSXSaint Clair41 min
May 30, 5:44 PM CDTTornado WarningLSXFayette31 min
May 30, 5:50 PM CDTSevere Thunderstorm WarningLSXMacoupin, Montgomery25 min
May 30, 6:14 PM CDTTornado WarningLSXWashington46 min
May 30, 6:36 PM CDTTornado WarningLSXMarion39 min
May 30, 1:34 PM CDTSevere Thunderstorm WarningLSXKnox41 min
May 30, 2:33 PM CDTSevere Thunderstorm WarningLSXMonroe, Shelby42 min
May 30, 2:36 PM CDTTornado WarningLSXOsage39 min
May 30, 2:51 PM CDTSevere Thunderstorm WarningLSXJefferson, Saint Louis, City of Saint Louis39 min
May 30, 3:11 PM CDTTornado WarningLSXGasconade, Osage49 min
May 30, 3:19 PM CDTSevere Thunderstorm WarningLSXLewis, Marion41 min
May 30, 3:28 PM CDTSevere Thunderstorm WarningLSXIron, Reynolds, Washington62 min
May 30, 3:36 PM CDTSevere Thunderstorm WarningLSXKnox39 min
May 30, 3:40 PM CDTSevere Thunderstorm WarningLSXAudrain, Monroe50 min
May 30, 3:41 PM CDTSevere Thunderstorm WarningLSXBoone, Moniteau49 min
May 30, 3:48 PM CDTTornado WarningLSXReynolds42 min
May 30, 3:52 PM CDTSevere Thunderstorm WarningLSXFranklin, Warren53 min
May 30, 3:56 PM CDTSevere Thunderstorm WarningLSXWashington49 min
May 30, 3:59 PM CDTTornado WarningLSXFranklin46 min
May 30, 4:25 PM CDTSevere Thunderstorm WarningLSXSaint Charles50 min
May 30, 4:28 PM CDTSevere Thunderstorm WarningLSXIron, Washington47 min
May 30, 4:42 PM CDTTornado WarningLSXFranklin48 min
May 30, 4:45 PM CDTTornado WarningLSXSaint Charles, Saint Louis45 min
May 30, 4:53 PM CDTSevere Thunderstorm WarningLSXMadison, Sainte Genevieve, Saint Francois52 min
May 30, 5:03 PM CDTSevere Thunderstorm WarningLSXIron, Reynolds42 min
May 30, 5:25 PM CDTTornado WarningLSXReynolds35 min
May 30, 5:27 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Saint Louis, City of Saint Louis48 min

Nearby

Tornado Warnings in Illinois, 2004Tornado Warnings in Missouri, 2004Every tornado warning in 2004Tornadoes 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.