Alert archive / Illinois / Tornado Warnings in 2006

Tornado Warning 94, NWS St. Louis, MO

July 21, 2006Clinton County, Illinois

NWS St. Louis, MO issued this tornado warning at Jul 21, 2006, 11:42 AM CDT for Clinton County, Illinois. It was in force for 63 min. 12 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: Jul 21, 2006, 11:42 AM CDT (16:42 UTC)
Expired: Jul 21, 2006, 12:45 PM CDT
In force: 63 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

County Clinton County, IL

The radar

The St Louis radar (KLSX), 105 km from the middle of the area, began a volume at 16:42 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

Time	Report	Where	Remark
Jul 21, 11:50 AM CDT	TSTM WND DMG	Aviston, IL	TREES AND LARGE LIMBS DOWN IN THE AVISTON AREA...POWER LINES DOWN
Jul 21, 11:50 AM CDT	HAIL 1.25	Aviston, IL	WINDS ESTIMATED TO 70 MPH...TELEPHONE POLES BROKEN
Jul 21, 11:55 AM CDT	TSTM WND DMG	2 E Germantown, IL	TREES DOWN BLOCKING HWY 161
Jul 21, 11:55 AM CDT	TSTM WND DMG	Germantown, IL	HALF MILE WIDE OF CONTINUOUS DAMAGE...MAINLY TREES DOWN...CORN FLATTENED...SHINGLES OF ROOFS FROM AVISTON THROUGH GERMANTOWN TO BARTELSO
Jul 21, 11:55 AM CDT	TSTM WND DMG	Germantown, IL	NUMEROUS TREES DOWN
Jul 21, 11:55 AM CDT	TSTM WND DMG	Trenton, IL	LARGE TREE LIMBS KNOCKING POWER LINES DOWN
Jul 21, 12:00 PM CDT	HAIL 0.88	1 N Germantown, IL
Jul 21, 12:05 PM CDT	TSTM WND DMG	Bartelso, IL	SEVERAL SILOS DESTROYED NEAR BARTELSO.
Jul 21, 12:10 PM CDT	TSTM WND DMG	1 N Germantown, IL	ROOF AND STRUCTURAL DAMGE TO FARM BUILDINGS
Jul 21, 12:15 PM CDT	TSTM WND DMG	Germantown, IL	CORN FIELDS FLATTENED
Jul 21, 12:15 PM CDT	TSTM WND DMG	Germantown, IL	TREES BLOWN ONTO ROOFS
Jul 21, 12:25 PM CDT	TSTM WND DMG	Bartelso, IL	LOTS OF TREES DOWN INTO HOUSES.

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.

Issued	Product	Office	Lasted
Jul 21, 9:22 AM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 4.7 hours before the alert went out and 188 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 801 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 646 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 211641
TORLSX
ILC027-211745-
/O.NEW.KLSX.TO.W.0094.060721T1642Z-060721T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1142 AM CDT FRI JUL 21 2006

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS

* UNTIL 1245 PM CDT

* AT 1137 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 11 MILES NORTHWEST OF
  TRENTON...OR ABOUT NEAR TROY...MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  TRENTON...
  AVISTON...
  ST. ROSE...
  ALBERS...
  BREESE...
  GERMANTOWN...
  BECKEMEYER...
  CARLYLE...

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM CDT FRIDAY
AFTERNOON FOR SOUTHWESTERN ILLINOIS AND EASTERN MISSOURI.

LAT...LON 3874 8961 3864 8971 3844 8971 3849 8943
      3850 8915 3864 8915

$$

CVKING

3 follow-up statements

000 
WWUS53 KLSX 211654
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1154 AM CDT FRI JUL 21 2006

ILC027-211745-
/O.CON.KLSX.TO.W.0094.000000T0000Z-060721T1745Z/
CLINTON IL-
1154 AM CDT FRI JUL 21 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT FOR CLINTON
COUNTY...

AT 1151 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR AVISTON...OR ABOUT
6 MILES WEST OF BREESE...MOVING SOUTHEAST AT 45 MPH.

LOCATIONS NEAR THE PATH OF THE TORNADO INCLUDE...
BREESE...GERMANTOWN...STOLLETOWN...BARTELSO...BECKEMEYER...CARLYLE...
POSEY...HUEY...HOFFMAN AND FERRIN.

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 3874 8961 3864 8971 3844 8971 3849 8943
      3850 8915 3864 8915

$$

CVKING

000 
WWUS53 KLSX 211702
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1203 PM CDT FRI JUL 21 2006

ILC027-211745-
/O.CON.KLSX.TO.W.0094.000000T0000Z-060721T1745Z/
CLINTON IL-
1203 PM CDT FRI JUL 21 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT FOR CLINTON
COUNTY...

AT 1201 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR BREESE...MOVING
SOUTHEAST AT 45 MPH.

LOCATIONS NEAR THE PATH OF THE TORNADO INCLUDE...
CARLYLE...POSEY...HUEY...HOFFMAN...FERRIN AND SHATTUC.

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 3874 8961 3864 8971 3844 8971 3849 8943
      3850 8915 3864 8915

$$

CVKING

000 
WWUS53 KLSX 211740
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1240 PM CDT FRI JUL 21 2006

ILC027-211750-
/O.EXP.KLSX.TO.W.0094.000000T0000Z-060721T1745Z/
CLINTON IL-
1240 PM CDT FRI JUL 21 2006

...THE TORNADO WARNING FOR CLINTON COUNTY EXPIRES AT 1245 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY.

ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM.

LAT...LON 3874 8961 3864 8971 3844 8971 3849 8943
      3850 8915 3864 8915

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 10:13 AM CDT	Severe Thunderstorm Warning	LSX	Calhoun	47 min
Jul 21, 10:34 AM CDT	Severe Thunderstorm Warning	LSX	Jersey	41 min
Jul 21, 10:48 AM CDT	Severe Thunderstorm Warning	LSX	Madison	57 min
Jul 21, 10:57 AM CDT	Severe Thunderstorm Warning	LSX	Saint Clair	63 min
Jul 21, 11:24 AM CDT	Severe Thunderstorm Warning	LSX	Clinton, Washington	66 min
Jul 21, 11:35 AM CDT	Tornado Warning	LSX	Madison	26 min
Jul 21, 11:59 AM CDT	Tornado Warning	LSX	Washington	46 min
Jul 21, 12:20 PM CDT	Tornado Warning	LSX	Marion	38 min

Nearby

Tornado Warnings in Illinois, 2006 Every tornado warning in 2006 Tornadoes in 2006

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.