Alert archive / Illinois / Tornado Warnings in 2007

Tornado Warning 30, NWS St. Louis, MO

October 2, 2007Greene County, Illinois

NWS St. Louis, MO issued this tornado warning at Oct 2, 2007, 7:54 PM CDT for Greene County, Illinois. It was in force for 36 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
Oct 2, 2007, 7:54 PM CDT (00:54 UTC)
Expired
Oct 2, 2007, 8:30 PM CDT
In force
36 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon

County Greene County, IL

The radar

The St Louis radar (KLSX), 83 km from the middle of the area, began a volume at 00:54 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
Oct 2, 5:47 PM CDTTornado WatchSPC4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.9 hours before the alert went out and 176 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 2007-10-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 15 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 00:00Z on 2007-10-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 257 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
15 J/kg
Mixed-layer CIN
-194 J/kg
Mixed-layer LCL
1487 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
257 m²/s²
0-3 km storm-relative helicity
306 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 030054
TORLSX
ILC061-030200-
/O.NEW.KLSX.TO.W.0030.071003T0054Z-071003T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
754 PM CDT TUE OCT 2 2007

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN GREENE COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 900 PM CDT

* AT 749 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 11 MILES WEST OF WHITE
  HALL...MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WHITE HALL...
  ROODHOUSE...
  ATHENSVILLE...

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 3941 9015 3931 9062 3935 9063 3936 9062
      3944 9062 3952 9049 3953 9015
TIME...MOT...LOC 0054Z 248DEG 27KT 3940 9056

$$

MILLER/CVKING
2 follow-up statements
000 
WWUS53 KLSX 030111
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
811 PM CDT TUE OCT 2 2007

ILC061-030200-
/O.CON.KLSX.TO.W.0030.000000T0000Z-071003T0200Z/
GREENE IL-
811 PM CDT TUE OCT 2 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
NORTHEASTERN GREENE COUNTY...

AT 809 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR WHITE HALL...MOVING
NORTHEAST AT 35 MPH.

LOCATIONS NEAR THE PATH OF THE TORNADO INCLUDE...ROODHOUSE AND RURAL 
NORTHEASTERN GREENE COUNTY.

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 3953 9015 3949 9015 3942 9041 3949 9044
      3953 9027
TIME...MOT...LOC 0111Z 247DEG 31KT 3946 9038

$$

MILLER/CVKING
000 
WWUS53 KLSX 030130
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
831 PM CDT TUE OCT 2 2007

ILC061-030141-
/O.CAN.KLSX.TO.W.0030.000000T0000Z-071003T0200Z/
GREENE IL-
831 PM CDT TUE OCT 2 2007

...THE TORNADO WARNING FOR NORTHEASTERN GREENE COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 3953 9015 3949 9015 3942 9041 3949 9044
      3953 9027
TIME...MOT...LOC 0131Z 247DEG 31KT 3953 9017

$$

MILLER/CVKING

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 2, 7:47 PM CDTTornado WarningLSXCalhoun, Jersey43 min
Oct 2, 8:31 PM CDTSevere Thunderstorm WarningLSXCalhoun, Jersey44 min

Nearby

Tornado Warnings in Illinois, 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.