Alert archive / Missouri / Tornado Warnings in 2011

Tornado Warning 5, NWS St. Louis, MO

February 27, 20116 counties in Missouri; Monroe County, Saint Clair County, Illinois

NWS St. Louis, MO issued this tornado warning at Feb 27, 2011, 10:47 PM CST for 6 counties in Missouri; Monroe County, Saint Clair County, Illinois. It was in force for 43 min. 40 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, 10:47 PM CST (04:47 UTC)
Expired: Feb 27, 2011, 11:30 PM CST
In force: 43 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Monroe County, IL, Saint Clair County, IL, City of Saint Louis, MO, Franklin County, MO, Jefferson County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 19 km from the middle of the area, began a volume at 04:49 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, 10:55 PM CST	FUNNEL CLOUD	Villa Ridge, MO	NEAR INTERSECTION OF HWY 100 AND M...STRONG ROTATION
Feb 27, 10:55 PM CST	TSTM WND DMG	Dutzow, MO	POLE BARN FLATTENED... METAL ROOF ON A GARAGE PEELED BACK... ROOF SHINGLES BLOWN OFF SEVERAL HOUSES... SEVERAL TREES SNAPPED OFF. TIME APPROXIMATE... 1050 TO 1055 PM.
Feb 27, 11:00 PM CST	FUNNEL CLOUD	Villa Ridge, MO
Feb 27, 11:00 PM CST	TSTM WND DMG	3 Wnw Augusta, MO	STRUCTURAL DAMAGE REPORTED AT BALDUCCI VINEYARDS.
Feb 27, 11:00 PM CST	TSTM WND GST 55	6 Ene Marthasville, MO
Feb 27, 11:00 PM CST	HAIL 0.25	6 Ene Marthasville, MO
Feb 27, 11:00 PM CST	HAIL 1.75	Villa Ridge, MO
Feb 27, 11:10 PM CST	TSTM WND DMG	Weldon Spring, MO	ONE 4 TO 5 INCH DIAMETER TREE SNAPPED OFF AT NWS ST LOUIS OFFICE. TIME ESTIMATED FROM RADAR.
Feb 27, 11:10 PM CST	TSTM WND GST 50	Eureka, MO
Feb 27, 11:10 PM CST	TSTM WND GST 54	Weldon Spring, MO	54 MPH WIND AND DIME SIZED HAIL AT WFO LSX
Feb 27, 11:10 PM CST	TSTM WND GST 68	3 W Chesterfield, MO
Feb 27, 11:10 PM CST	HAIL 0.25	Eureka, MO
Feb 27, 11:10 PM CST	HAIL 0.7	Weldon Spring, MO	54 MPH WIND AND DIME SIZED HAIL AT WFO LSX
Feb 27, 11:14 PM CST	TORNADO	5 Nne Gray Summit, MO	HOMES DAMAGED IN ST. ALBANS
Feb 27, 11:15 PM CST	TSTM WND DMG	Creve Coeur, MO	3-5 INCH DIAMETER TREE LIMBS BROKEN...HEAVY LAWN FURNITURE BLOWN INTO FENCE
Feb 27, 11:15 PM CST	TSTM WND DMG	Manchester, MO	RONNIES MOVIE SIGN IS BLOWN DOWN...STREET SIGNS ON LINDBURGH BLOWN DOWN...SIGNS ON I-270 BETWEEN GRAVOIS AND TESSON FERRRY ARE BENT AND TWISTED
Feb 27, 11:15 PM CST	TSTM WND DMG	O'Fallon, MO	POWER LINES DOWN
Feb 27, 11:15 PM CST	TSTM WND DMG	Wildwood, MO	SHINGLES REMOVED FROM HOUSE...CHIMNEY BLOWN OFF NEARBY HOUSE
Feb 27, 11:15 PM CST	TSTM WND GST 60	Ellisville, MO
Feb 27, 11:15 PM CST	HAIL 0.25	Ellisville, MO
Feb 27, 11:22 PM CST	TSTM WND GST 67	1 Ssw Hazelwood, MO
Feb 27, 11:22 PM CST	TSTM WND GST 70	5 Ene Maryland Heights, MO	70 MPH WINDS REPORTED AT 270 AND 70 WITH LARGE HAIL OF UNKNOWN SIZE
Feb 27, 11:22 PM CST	HAIL 0	5 Ene Maryland Heights, MO	70 MPH WINDS REPORTED AT 270 AND 70 WITH LARGE HAIL OF UNKNOWN SIZE
Feb 27, 11:23 PM CST	TSTM WND GST 50	Des Peres, MO	50 MPH WINDS AND HALF INCH HAIL REPORTED AT BIG BEND ROAD AND BARRETT STATION
Feb 27, 11:23 PM CST	HAIL 0.5	Des Peres, MO	50 MPH WINDS AND HALF INCH HAIL REPORTED AT BIG BEND ROAD AND BARRETT STATION
Feb 27, 11:25 PM CST	TSTM WND DMG	1 Nne Ferguson, MO	NUMEROUS 4 TO 5 INCH DIAMTER LIMBS DOWN... EST 2 FOOT DIAMETER TREE BRANCH DOWN.
Feb 27, 11:25 PM CST	TSTM WND DMG	Ballwin, MO	TREES BLOWN DOWN IN BALLWIN
Feb 27, 11:25 PM CST	TSTM WND DMG	Clayton, MO	BIG BEND BLVD CLOSED IN CLAYTON DUE TO NUMEROUS POWER POLES DOWN.
Feb 27, 11:25 PM CST	TSTM WND GST 50	Brentwood, MO	MANCHESTER AND MC KNIGHT RD
Feb 27, 11:25 PM CST	TSTM WND GST 50	Manchester, MO	MANCHESTER AND MC NIGHT RD
Feb 27, 11:25 PM CST	TSTM WND GST 60	Ballwin, MO
Feb 27, 11:25 PM CST	HAIL 0.25	Brentwood, MO	MANCHESTER AND MC KIGHT RD
Feb 27, 11:25 PM CST	HAIL 0.25	Manchester, MO	MANCHESTER AND MC NIGHT RD
Feb 27, 11:27 PM CST	TSTM WND DMG	St. Louis, MO	I-44 CLOSED IN BOTH DIRECTIONS BETWEEN HAMPTON AND KINGS HIGHWAY...DEBRIS IN THE HIGHWAY.
Feb 27, 11:27 PM CST	TORNADO	Mehlville, MO	STORM SPOTTER REPORTS FUNNEL CLOUD NEAR CONCORD VILLAGE CAUSING POWER FLASHES
Feb 27, 11:29 PM CST	TSTM WND GST 68	Kirkwood, MO	PEA SIZEE HAIL
Feb 27, 11:30 PM CST	TSTM WND DMG	2 Sw Oakville, MO	LARGE PINE TREE 35 TO 40 FOOT TALL UPROOTED. ALSO ONE STORAGE SHED OVERTURNED.
Feb 27, 11:30 PM CST	TSTM WND DMG	Oakville, MO	ON CHRISTOPHER DR... LARGE OLDER TREE DOWN PARTIALLY BLOCKING ROAD... AND A CAR PORT BLOWN OVER AND COLLAPSED. THIS DAMAGE VIEWED ENROUTE TO WORK THIS MORNING.
Feb 27, 11:30 PM CST	TSTM WND GST 45	Pevely, MO
Feb 27, 11:34 PM CST	FUNNEL CLOUD	St. Louis, MO	FUNNEL CLOUD REPORTED OVER NORTH ST. LOUIS CITY NEAR LAFAYETTE SQUARE

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, 4.8 hours before the alert went out and 235 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.

338 
WFUS53 KLSX 280447
TORLSX
ILC133-163-MOC071-099-183-189-219-510-280530-
/O.NEW.KLSX.TO.W.0005.110228T0447Z-110228T0530Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1047 PM CST SUN FEB 27 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN MONROE COUNTY IN SOUTHWEST ILLINOIS...
  EXTREME WEST CENTRAL ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS...
  EASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
  NORTHERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHWESTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
  ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHEASTERN WARREN COUNTY IN EAST CENTRAL MISSOURI...
  ST. LOUIS CITY IN EAST CENTRAL MISSOURI...

* UNTIL 1130 PM CST

* AT 1044 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 6
  MILES SOUTHWEST OF TRUESDALE TO 6 MILES NORTHEAST OF BEAUFORT TO
  SULLIVAN...AND MOVING EAST AT 70 MPH.

* LOCATIONS IMPACTED INCLUDE...
  VILLA RIDGE...GRAY SUMMIT...PACIFIC...LAKE ST. LOUIS...DARDENNE
  PRAIRIE...EUREKA...WILDWOOD...O'FALLON...CEDAR HILL...WELDON
  SPRING...BYRNES MILL...COTTLEVILLE...ELLISVILLE...CLARKSON
  VALLEY...CHESTERFIELD...HIGH RIDGE...BALLWIN...ST. PETERS...MURPHY
  AND MANCHESTER.

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 3880 9107 3881 9018 3874 9018 3871 9020
      3866 9018 3821 9020 3821 9084
TIME...MOT...LOC 0447Z 269DEG 61KT 3874 9114 3848 9105
          3821 9114

$$

CVKING

2 follow-up statements

866 
WWUS53 KLSX 280503
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1103 PM CST SUN FEB 27 2011

ILC133-163-MOC071-099-183-189-219-510-280530-
/O.CON.KLSX.TO.W.0005.000000T0000Z-110228T0530Z/
MONROE IL-ST. CLAIR IL-JEFFERSON MO-FRANKLIN MO-ST. LOUIS CITY MO-
ST. LOUIS MO-ST. CHARLES MO-WARREN MO-
1103 PM CST SUN FEB 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN WARREN...
SOUTHWESTERN ST. CHARLES...ST. LOUIS...ST. LOUIS CITY...EASTERN
FRANKLIN...NORTHERN JEFFERSON...EXTREME WEST CENTRAL ST. CLAIR AND
NORTHWESTERN MONROE COUNTIES UNTIL 1130 PM CST...

AT 1057 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 STORMS STRETCHED FROM 
EASTERN ST. CHARLES COUNTY TO WESTERN ST. LOUIS COUNTY. THE MOST 
INTENSE CIRCULATION AND TORNADO ON RADAR IS LOCATED NEAR 
AUGUSTA...OR 7 MILES NORTHEAST OF WASHINGTON...MOVING EAST AT 60 MPH.

THERE ARE MANY OTHER CIRCULATIONS ALONG THIS LINE...WHICH COULD ALSO 
PRODUCE TORNADOES. TAKE SHELTER IMMEDIATELY!


LOCATIONS IMPACTED INCLUDE...
  CEDAR HILL...LAKE ST. LOUIS...HILLSBORO...EUREKA...DARDENNE
  PRAIRIE...WILDWOOD...O'FALLON...BYRNES MILL...WELDON SPRING...
  COTTLEVILLE...ELLISVILLE...HIGH RIDGE...CLARKSON VALLEY...
  CHESTERFIELD...ANTONIA...BALLWIN...FESTUS...ST. PETERS...MURPHY AND
  CRYSTAL CITY.

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 3880 9107 3881 9018 3874 9018 3871 9020
      3866 9018 3821 9020 3821 9084
TIME...MOT...LOC 0502Z 253DEG 53KT 3862 9080

$$

CVKING

983 
WWUS53 KLSX 280510
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1110 PM CST SUN FEB 27 2011

MOC219-280519-
/O.CAN.KLSX.TO.W.0005.000000T0000Z-110228T0530Z/
WARREN MO-
1110 PM CST SUN FEB 27 2011

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

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

LAT...LON 3822 9078 3860 9077 3877 9091 3881 9018
      3874 9018 3871 9020 3869 9020 3866 9018
      3821 9020
TIME...MOT...LOC 0509Z 256DEG 54KT 3863 9066

$$

ILC133-163-MOC071-099-183-189-510-280530-
/O.CON.KLSX.TO.W.0005.000000T0000Z-110228T0530Z/
MONROE IL-ST. CLAIR IL-JEFFERSON MO-FRANKLIN MO-ST. LOUIS CITY MO-
ST. LOUIS MO-ST. CHARLES MO-
1110 PM CST SUN FEB 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL ST. CHARLES...ST.
LOUIS...ST. LOUIS CITY...EXTREME NORTHEASTERN FRANKLIN...NORTHERN
JEFFERSON...EXTREME WEST CENTRAL ST. CLAIR AND NORTHWESTERN MONROE
COUNTIES UNTIL 1130 PM CST...

AT 1108 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS
AND BRIEF RAIN-WRAPPED TORNADOES.  THIS DANGEROUS STORM WAS LOCATED
NEAR WILDWOOD...MOVING EAST AT 60 MPH.

WIND SPEEDS UP TO 70 MPH CAN BE EXPECTED WITH THIS LINE ALONG WITH 
RAIN WRAPPED TORNADOES. TAKE SHELTER IMMEDIATELY!

LOCATIONS IMPACTED INCLUDE...
  BYRNES MILL...WELDON SPRING...COTTLEVILLE...ELLISVILLE...CLARKSON
  VALLEY...HIGH RIDGE...CHESTERFIELD...BALLWIN...ST. PETERS...
  ANTONIA...FESTUS...MURPHY...MANCHESTER...CRYSTAL CITY...PEVELY...
  HERCULANEUM...VALLEY PARK...BARNHART...FENTON AND TOWN AND COUNTRY.

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 9078 3860 9077 3877 9091 3881 9018
      3874 9018 3871 9020 3869 9020 3866 9018
      3821 9020
TIME...MOT...LOC 0509Z 256DEG 54KT 3863 9066

$$

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	Lewis, Marion	49 min
Feb 27, 6:57 PM CST	Severe Thunderstorm Warning	LSX	Lewis, Marion	15 min
Feb 27, 7:38 PM CST	Severe Thunderstorm Warning	LSX	Marion, Ralls	37 min
Feb 27, 8:02 PM CST	Tornado Warning	LSX	Pike	28 min
Feb 27, 8:13 PM CST	Areal Flood Advisory	LSX	Marion	4 hr
Feb 27, 8:25 PM CST	Severe Thunderstorm Warning	LSX	Pike	35 min
Feb 27, 9:50 PM CST	Severe Thunderstorm Warning	LSX	Audrain, Pike, Ralls	40 min
Feb 27, 9:54 PM CST	Tornado Warning	LSX	Cole, Gasconade, Osage	36 min
Feb 27, 10:19 PM CST	Tornado Warning	LSX	Franklin, Gasconade, Warren	41 min
Feb 27, 10:25 PM CST	Tornado Warning	LSX	Franklin, Gasconade	50 min
Feb 27, 11:05 PM CST	River Flood Warning	LSX	Marion	35 hr
Feb 27, 11:11 PM CST	River Flood Warning	LSX	Lincoln	35 hr
Feb 27, 11:11 PM CST	River Flood Warning	LSX	Marion	35 hr
Feb 27, 11:11 PM CST	River Flood Warning	LSX	Monroe	4 days
Feb 27, 11:18 PM CST	Tornado Warning	LSX	Jefferson, Saint Charles, Saint Louis, City of Saint Louis	42 min
Feb 27, 11:47 PM CST	Severe Thunderstorm Warning	LSX	Crawford	21 min
Feb 28, 12:06 AM CST	Severe Thunderstorm Warning	LSX	Washington	39 min
Feb 28, 12:18 AM CST	Tornado Warning	LSX	Iron, Reynolds	42 min
Feb 28, 12:23 AM CST	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois	52 min
Feb 28, 12:44 AM CST	Tornado Warning	LSX	Iron, Madison, Sainte Genevieve, Saint Francois	46 min
Feb 28, 2:19 AM CST	River Flood Warning	LSX	Saint Charles	4 days
Feb 28, 6:46 AM CST	River Flood Warning	LSX	Marion	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	Pike	52 hr
Feb 28, 10:38 AM CST	River Flood Warning	LSX	Gasconade, Montgomery	4 days
Feb 28, 11:43 AM CST	River Flood Warning	LSX	Lincoln	47 hr
Feb 27, 8:14 PM CST	Severe Thunderstorm Warning	LSX	Brown	16 min
Feb 27, 10:30 PM CST	Severe Thunderstorm Warning	LSX	Pike	18 min
Feb 27, 11:43 PM CST	Tornado Warning	LSX	Bond, Clinton, Fayette, Madison, Saint Clair, Washington	47 min
Feb 28, 12:07 AM CST	Tornado Warning	LSX	Bond, Clinton, Fayette, Marion, Washington	38 min
Feb 28, 11:14 AM CST	River Flood Warning	LSX	Morgan, Pike	17 days

Nearby

Tornado Warnings in Missouri, 2011 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.