Alert archive / Missouri / Tornado Warnings in 2004

Tornado Warning 24, NWS St. Louis, MO

May 27, 2004Franklin County, Jefferson County, Missouri

NWS St. Louis, MO issued this tornado warning at May 27, 2004, 7:29 PM CDT for Franklin County, Jefferson County, Missouri. It was in force for 46 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 27, 2004, 7:29 PM CDT (00:29 UTC)
Expired
May 27, 2004, 8:15 PM CDT
In force
46 min
Issued by
NWS St. Louis, MO
Area
Counties, with a storm outline in the text

Counties Franklin County, MO, Jefferson County, MO

The radar

The St Louis radar (KLSX), 25 km from the middle of the area, began a volume at 00:29 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.

What was reported inside it

TimeReportWhereRemark
May 27, 7:50 PM CDTHAIL 0.887 E Pacific, MOREPORTED FROM INTERSTATE 44.
May 27, 7:58 PM CDTTORNADOArnold, MOTORNADO ON THE GROUND 5 MILES SOUTH OF 141 AND 55 INTERCHANGE...NEAR ARNOLD.
May 27, 8:00 PM CDTFUNNEL CLOUDArnold, MOFUNNEL CLOUD REPORTED BY JEFFERSON COUNTY 911...NEAR ARNOLD.
May 27, 8:05 PM CDTTSTM WND DMG1 Nw High Ridge, MOBOATS LIFTED OUT OF THE WATER.
May 27, 8:21 PM CDTTSTM WND DMG3 W House Springs, MO10 INCH DIAMETER TREES BLOWN OVER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
May 27, 2:25 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 255 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 00:00Z on 2004-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 651 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 00:00Z on 2004-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -105 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
651 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1078 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
-105 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
-0.4
Supercell composite
-3.6

Open this sounding in Storm Lab

The text

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

881 
WFUS53 KLSX 280029
TORLSX
MOC071-099-280115-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
728 PM CDT THU MAY 27 2004

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI
  NORTHERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 815 PM CDT

* AT 728 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR GRAY SUMMIT. THE
  STORM WAS MOVING SOUTHEAST AT 40 MPH...AND MAY PRODUCE A
  TORNADO AT ANY   TIME

* LOCATIONS IMPACTED INCLUDE...
  BYRNES MILL
  HOUSE SPRINGS
  HIGH RIDGE
  PARKDALE
  MURPHY
  ARNOLD
  KIMMSWICK

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.

IF YOU LIVE IN A MOBILE HOME OR TRAILER...ABANDON IT IMMEDIATELY AND
SEEK SHELTER IN A MORE SUBSTANTIAL SHELTER.

LAT...LON 3847 9088 3856 9086 3862 9075 3848 9074
          3846 9067 3850 9059 3850 9042 3845 9037
          3838 9035 3835 9038

$$

TRUETT

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 7:06 PM CDTFlash Flood WarningLSXSaint Charles, Saint Louis, City of Saint Louis4 hr
May 27, 7:15 PM CDTTornado WarningLSXSaint Louis45 min
May 27, 7:23 PM CDTSevere Thunderstorm WarningLSXFranklin, Jefferson37 min
May 27, 7:32 PM CDTTornado WarningLSXCity of Saint Louis28 min
May 27, 7:40 PM CDTFlash Flood WarningLSXJefferson4 hr
May 27, 8:17 PM CDTSevere Thunderstorm WarningLSXJefferson28 min
May 27, 8:21 PM CDTSevere Thunderstorm WarningLSXWashington39 min
May 27, 8:22 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve, Saint Francois53 min
May 27, 8:37 PM CDTTornado WarningLSXSainte Genevieve, Saint Francois38 min
May 27, 11:00 PM CDTFlash Flood WarningLSXSaint Charles, Saint Louis, City of Saint Louis3 hr

Nearby

Tornado 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.