Alert archive / Illinois / Tornado Warnings in 2007

Tornado Warning 19, NWS St. Louis, MO

September 6, 2007Randolph County, Illinois; Sainte Genevieve County, Missouri

NWS St. Louis, MO issued this tornado warning at Sep 6, 2007, 5:35 PM CDT for Randolph County, Illinois; Sainte Genevieve County, Missouri. It was in force for 40 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
Sep 6, 2007, 5:35 PM CDT (22:35 UTC)
Expired
Sep 6, 2007, 6:15 PM CDT
In force
40 min
Issued by
NWS St. Louis, MO
Area
Counties, with a storm outline in the text

Counties Randolph County, IL, Sainte Genevieve County, MO

The radar

The St Louis radar (KLSX), 89 km from the middle of the area, began a volume at 22:38 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.6 hours before the alert went out and 267 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 2007-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 134 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2007-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
134 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
772 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 062235
TORLSX
ILC157-MOC186-062315-
/O.NEW.KLSX.TO.W.0019.070906T2235Z-070906T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
535 PM CDT THU SEP 6 2007

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI
  RANDOLPH COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 615 PM CDT

* AT 533 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR ROCKY RIDGE...OR
  ABOUT 12 MILES WEST OF STE. GENEVIEVE...MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BLOOMSDALE...
  STE. GENEVIEVE...
  EVANSVILLE...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

LAT...LON 3795 9037 3813 9006 3813 9004 3815 9003
      3821 8992 3806 8970 3779 9021
TIME...MOT...LOC 2235Z 236DEG 19KT 3793 9025

$$

GLASS
2 follow-up statements
000 
WWUS53 KLSX 062253
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
553 PM CDT THU SEP 6 2007

ILC157-MOC186-062315-
/O.CON.KLSX.TO.W.0019.000000T0000Z-070906T2315Z/
RANDOLPH IL-STE. GENEVIEVE MO-
553 PM CDT THU SEP 6 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR STE.
GENEVIEVE AND RANDOLPH COUNTIES...

AT 552 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR STE. GENEVIEVE...
MOVING NORTHEAST AT 25 MPH.

LOCATIONS NEAR THE PATH OF THE TORNADO INCLUDE...KELLOGG...STE.
GENEVIEVE...PRAIRIE DU ROCHER...MODOC...ROOTS...ELLIS GROVE...
EVANSVILLE...WALSH AND PRESTON.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3795 9037 3813 9006 3813 9004 3815 9003
      3821 8992 3806 8970 3779 9021
TIME...MOT...LOC 2253Z 246DEG 23KT 3798 9011

$$

GLASS
000 
WWUS53 KLSX 062320
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
620 PM CDT THU SEP 6 2007

ILC157-MOC186-062330-
/O.EXP.KLSX.TO.W.0019.000000T0000Z-070906T2315Z/
RANDOLPH IL-STE. GENEVIEVE MO-
620 PM CDT THU SEP 6 2007

...THE TORNADO WARNING FOR STE. GENEVIEVE AND RANDOLPH COUNTIES
EXPIRES AT 615 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER 
APPEARED TO BE SEVERE. STRONG THUNDERSTORMS WILL CONTINUE TO MOVE 
ACROSS STE. GENEVIEVE AND RANDOLPH COUNTIES THROUGH 645 
PM...PRODUCING GUSTY WINDS TO 40 MPH AND LOCALLY HEAVY RAIN.

LAT...LON 3795 9037 3813 9006 3813 9004 3815 9003
      3821 8992 3806 8970 3779 9021
TIME...MOT...LOC 2253Z 246DEG 23KT 3798 9011

$$

GLASS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 2:27 PM CDTTornado WarningLSXJersey, Macoupin34 min
Sep 6, 6:01 PM CDTSevere Thunderstorm WarningLSXMacoupin, Madison44 min
Sep 6, 5:08 PM CDTSevere Thunderstorm WarningLSXReynolds52 min
Sep 6, 5:36 PM CDTTornado WarningLSXIron, Madison39 min
Sep 6, 6:00 PM CDTSevere Thunderstorm WarningLSXIron, Madison, Reynolds45 min

Nearby

Tornado Warnings in Illinois, 2007Tornado Warnings in Missouri, 2007Every tornado warning in 2007Tornadoes in 2007

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.