Alert archive / Illinois / Tornado Warnings in 2011

Tornado Warning 7, NWS St. Louis, MO

February 27, 20116 counties in Illinois

NWS St. Louis, MO issued this tornado warning at Feb 27, 2011, 11:43 PM CST for 6 counties in Illinois. It was in force for 47 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: Feb 27, 2011, 11:43 PM CST (05:43 UTC)
Expired: Feb 28, 2011, 12:30 AM CST
In force: 47 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Bond County, IL, Clinton County, IL, Fayette County, IL, Madison County, IL, Saint Clair County, IL, Washington County, IL

The radar

The St Louis radar (KLSX), 91 km from the middle of the area, began a volume at 05:44 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
Feb 27, 11:45 PM CST	TSTM WND DMG	Troy, IL	STRUCTURAL DAMAGE TO HOMES IN TROY
Feb 27, 11:50 PM CST	TSTM WND DMG	3 E Mascoutah, IL	TRACTOR TRAILER BLOWN OVER ON RTE 177
Feb 27, 11:55 PM CST	TSTM WND GST 55	Mascoutah, IL
Feb 27, 11:55 PM CST	HAIL 0.25	Mascoutah, IL
Feb 27, 11:59 PM CST	TSTM WND DMG	Highland, IL	POWER OUTAGES
Feb 28, 12:00 AM CST	TSTM WND GST 59	New Baden, IL
Feb 28, 12:00 AM CST	TSTM WND GST 60	Aviston, IL	HEAVY LAWN FURNITURE BLOWN ACROSS YARD
Feb 28, 12:00 AM CST	TSTM WND GST 61	New Baden, IL
Feb 28, 12:02 AM CST	TSTM WND GST 60	Aviston, IL	WIND GUSTS OF AT LEAST 60 MPH
Feb 28, 12:05 AM CST	TSTM WND DMG	Okawville, IL	POWER POLES SNAPPED. EXTENSIVE DAMAGE TO A GRAIN ELEVATOR. METAL ROOFS BLOWN OFF OF SEVERAL BUILDINGS.
Feb 28, 12:10 AM CST	TSTM WND DMG	Bartelso, IL	BARN DESTROYED...POWER POLES SNAPPED.
Feb 28, 12:18 AM CST	TSTM WND GST 70	Hoyleton, IL	HAM RADIO ANTENNAS BLOWN DOWN.

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
Feb 27, 9:40 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.7 hours before the alert went out and 218 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: 124 J/kg
Mixed-layer CIN: -220 J/kg
Mixed-layer LCL: 494 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

645 
WFUS53 KLSX 280543
TORLSX
ILC005-027-051-119-163-189-280630-
/O.NEW.KLSX.TO.W.0007.110228T0543Z-110228T0630Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1143 PM CST SUN FEB 27 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  BOND COUNTY IN SOUTH CENTRAL ILLINOIS...
  CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
  SOUTHWESTERN FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...
  EASTERN MADISON COUNTY IN SOUTHWEST ILLINOIS...
  EASTERN ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS...
  WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS...

* UNTIL 1230 AM CST

* AT 1140 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE SQUALL LINE CAPABLE OF PRODUCING BRIEF RAIN-WRAPPED
  TORNADOES IN ADDITION TO WIDESPREAD STRAIGHT LINE WIND DAMAGE.
  THESE DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  CARPENTER TO FAIRVIEW HEIGHTS TO NEW DESIGN...AND MOVING EAST AT 65
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  FREEBURG...SCOTT AFB...LEBANON...MASCOUTAH...HIGHLAND...NEW
  BADEN...BREESE...GREENVILLE...CARLYLE...NASHVILLE...WORDEN...
  MARINE...ST. JACOB...NEW ATHENS...ALHAMBRA...TRENTON...NEW
  MEMPHIS...MARISSA...AVISTON AND ALBERS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TAKE COVER NOW.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 3822 8916 3822 8990 3823 8992 3827 8993
      3828 8993 3828 8991 3831 8991 3831 8993
      3893 8990 3903 8914
TIME...MOT...LOC 0543Z 263DEG 61KT 3888 8990 3859 8992
          3827 9004

$$

CVKING

4 follow-up statements

148 
WWUS53 KLSX 280553
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1153 PM CST SUN FEB 27 2011

ILC005-027-051-119-163-189-280630-
/O.CON.KLSX.TO.W.0007.000000T0000Z-110228T0630Z/
WASHINGTON IL-ST. CLAIR IL-CLINTON IL-MADISON IL-BOND IL-FAYETTE IL-
1153 PM CST SUN FEB 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN FAYETTE...
BOND...EASTERN MADISON...CLINTON...EASTERN ST. CLAIR AND WASHINGTON
COUNTIES UNTIL 1230 AM CST...

AT 1148 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS
AND BRIEF RAIN-WRAPPED TORNADOES.  THESE DANGEROUS STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM ALHAMBRA TO LEBANON TO NEW
ATHENS...MOVING EAST AT 70 MPH.

RADAR CONTINUES TO INDICATE NUMEROUS AREAS ALONG THE SQUALL LINE 
THAT COULD BE PRODUCING TORNADOES. TAKE SHELTER IMMEDIATELY!

LOCATIONS IMPACTED INCLUDE...
  HIGHLAND...NEW BADEN...BREESE...GREENVILLE...CARLYLE...NASHVILLE...
  TRENTON...NEW MEMPHIS...MARISSA...AVISTON...ALBERS...ST. ROSE...
  POCAHONTAS...JAMESTOWN...RENO...GERMANTOWN...LIVELY GROVE...
  OKAWVILLE...BECKEMEYER AND BEAVER CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TAKE COVER NOW.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 3822 8916 3822 8990 3823 8992 3827 8993
      3828 8993 3828 8991 3831 8991 3831 8993
      3893 8990 3903 8914
TIME...MOT...LOC 0552Z 263DEG 61KT 3890 8970 3861 8973
          3829 8985

$$

CVKING

113 
WWUS53 KLSX 280604
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1204 AM CST MON FEB 28 2011

ILC163-280613-
/O.CAN.KLSX.TO.W.0007.000000T0000Z-110228T0630Z/
ST. CLAIR IL-
1204 AM CST MON FEB 28 2011

...THE TORNADO WARNING FOR EASTERN ST. CLAIR COUNTY IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

LAT...LON 3822 8916 3822 8971 3896 8963 3897 8962
      3903 8914
TIME...MOT...LOC 0603Z 263DEG 61KT 3892 8947 3863 8949
          3831 8961

$$

ILC005-027-051-119-189-280630-
/O.CON.KLSX.TO.W.0007.000000T0000Z-110228T0630Z/
WASHINGTON IL-CLINTON IL-MADISON IL-BOND IL-FAYETTE IL-
1204 AM CST MON FEB 28 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN FAYETTE...
BOND...SOUTHEASTERN MADISON...CLINTON AND WASHINGTON COUNTIES UNTIL
1230 AM CST...

AT 1201 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS 
IN EXCESS OF 70 MPH AND BRIEF RAIN-WRAPPED TORNADOES.  THESE 
DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM RENO TO 
BREESE TO LIVELY GROVE...MOVING EAST AT 70 MPH.

NUMEROUS CIRCULATIONS CONTINUE TO BE IDENTIFIED ON RADAR...AND EACH 
OF THESE COULD BE PRODUCING A TORNADO. TAKE SHELTER IMMEDIATELY!

LOCATIONS IMPACTED INCLUDE...
  GREENVILLE...CARLYLE...NASHVILLE...BECKEMEYER...BEAVER CREEK...
  WOBURN...TAMALCO...MULBERRY GROVE...BOULDER...SHATTUC...
  IRVINGTON...ASHLEY...STOLLETOWN...DUDLEYVILLE...BARTELSO...
  ELKTON...FROGTOWN...ADDIEVILLE...OAKDALE AND COVINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR 
THE TORNADO. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. 
TAKE COVER NOW.

&&

LAT...LON 3822 8916 3822 8971 3896 8963 3897 8962
      3903 8914
TIME...MOT...LOC 0603Z 263DEG 61KT 3892 8947 3863 8949
          3831 8961

$$

CVKING

342 
WWUS53 KLSX 280615
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1215 AM CST MON FEB 28 2011

ILC119-280625-
/O.CAN.KLSX.TO.W.0007.000000T0000Z-110228T0630Z/
MADISON IL-
1215 AM CST MON FEB 28 2011

...THE TORNADO WARNING FOR SOUTHEASTERN MADISON COUNTY IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

LAT...LON 3823 8968 3899 8941 3903 8914 3822 8916
TIME...MOT...LOC 0615Z 263DEG 61KT 3894 8921 3865 8923
          3828 8942

$$

ILC005-027-051-189-280630-
/O.CON.KLSX.TO.W.0007.000000T0000Z-110228T0630Z/
WASHINGTON IL-CLINTON IL-BOND IL-FAYETTE IL-
1215 AM CST MON FEB 28 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN FAYETTE...
EASTERN BOND...CLINTON AND WASHINGTON COUNTIES UNTIL 1230 AM CST...

AT 1210 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS
AND BRIEF RAIN-WRAPPED TORNADOES.  THESE DANGEROUS STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM WOBURN TO CARLYLE TO 5 MILES EAST
OF LIVELY GROVE...MOVING EAST AT 70 MPH.

THE STRONGEST ROTATION IS EAST OF GERMANTOWN...NEAR POSEY. THIS 
POSSIBLE TORNADO IS MOVING EAST AT 70 MPH. TAKE SHELTER NOW!

LOCATIONS IMPACTED INCLUDE...
  SHATTUC...IRVINGTON...ASHLEY...SHAFTER...POSEN...HOYLETON...
  BEAUCOUP...DU BOIS...RICHVIEW AND RADOM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR 
THE TORNADO. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. 
TAKE COVER NOW.

&&

LAT...LON 3823 8968 3899 8941 3903 8914 3822 8916
TIME...MOT...LOC 0615Z 263DEG 61KT 3894 8921 3865 8923
          3828 8942

$$

CVKING

708 
WWUS53 KLSX 280625
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1225 AM CST MON FEB 28 2011

ILC005-027-051-280635-
/O.CAN.KLSX.TO.W.0007.000000T0000Z-110228T0630Z/
CLINTON IL-BOND IL-FAYETTE IL-
1225 AM CST MON FEB 28 2011

...THE TORNADO WARNING FOR SOUTHWESTERN FAYETTE...EASTERN BOND AND
CLINTON COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED EAST OF THE 
WARNED AREA.

LAT...LON 3823 8958 3848 8915 3822 8916
TIME...MOT...LOC 0625Z 263DEG 61KT 3844 8907 3823 8939

$$

ILC189-280630-
/O.CON.KLSX.TO.W.0007.000000T0000Z-110228T0630Z/
WASHINGTON IL-
1225 AM CST MON FEB 28 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN WASHINGTON
COUNTY UNTIL 1230 AM CST...

AT 1223 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS
AND BRIEF RAIN-WRAPPED TORNADOES.  THESE DANGEROUS STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM IRVINGTON TO 9 MILES SOUTH OF
NASHVILLE...MOVING EAST AT 70 MPH.

LOCATIONS IMPACTED INCLUDE...
  ASHLEY...POSEN...RADOM AND DU BOIS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR 
THE TORNADO. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. 
TAKE COVER NOW.

&&

LAT...LON 3823 8958 3848 8915 3822 8916
TIME...MOT...LOC 0625Z 263DEG 61KT 3844 8907 3823 8939

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 27, 6:26 PM CST	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	49 min
Feb 27, 7:38 PM CST	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	37 min
Feb 27, 8:02 PM CST	Tornado Warning	LSX	Pike	28 min
Feb 27, 8:14 PM CST	Severe Thunderstorm Warning	LSX	Brown	16 min
Feb 27, 8:25 PM CST	Severe Thunderstorm Warning	LSX	Calhoun, Pike	35 min
Feb 27, 9:50 PM CST	Severe Thunderstorm Warning	LSX	Adams, Pike	40 min
Feb 27, 10:30 PM CST	Severe Thunderstorm Warning	LSX	Pike	18 min
Feb 27, 10:47 PM CST	Tornado Warning	LSX	Monroe, Saint Clair	43 min
Feb 27, 11:18 PM CST	Tornado Warning	LSX	Madison, Monroe, Saint Clair	42 min
Feb 28, 12:07 AM CST	Tornado Warning	LSX	Bond, Clinton, Fayette, Marion, Washington	38 min
Feb 28, 12:23 AM CST	Severe Thunderstorm Warning	LSX	Randolph	52 min
Feb 28, 2:19 AM CST	River Flood Warning	LSX	Jersey	4 days
Feb 28, 6:46 AM CST	River Flood Warning	LSX	Pike	29 hr
Feb 28, 6:46 AM CST	River Flood Warning	LSX	Pike	38 hr
Feb 28, 6:46 AM CST	River Flood Warning	LSX	Calhoun	52 hr
Feb 28, 11:14 AM CST	River Flood Warning	LSX	Morgan, Pike	17 days
Feb 28, 11:43 AM CST	River Flood Warning	LSX	Calhoun	47 hr

Nearby

Tornado Warnings in Illinois, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.