Alert archive / Missouri / Tornado Warnings in 2011
Tornado Warning 49, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 22, 2011, 7:59 PM CDT for Saint Louis County, City of Saint Louis, Missouri; Madison County, Saint Clair County, Illinois. It was in force for 46 min. 11 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
- Apr 22, 2011, 7:59 PM CDT (00:59 UTC)
- Expired
- Apr 22, 2011, 8:45 PM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Madison County, IL, Saint Clair County, IL, City of Saint Louis, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 45 km from the middle of the area, began a volume at 00:59 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 |
|---|---|---|---|
| Apr 22, 8:15 PM CDT | TORNADO | Dellwood, MO | AT LEAST ONE HOME DAMAGED NEAR CHAMBERS AND WEST FLORRISANT |
| Apr 22, 8:15 PM CDT | TORNADO | Ferguson, MO | UPROOTED TREES AND POWER LINES DOWN NEAR ELIZAABETH AND CHAMBERS |
| Apr 22, 8:18 PM CDT | TSTM WND DMG | Dellwood, MO | LARGE TREE FELL THROUGH A HOME AT 270 |
| Apr 22, 8:21 PM CDT | TORNADO | Hazelwood, MO | CHASERS REPORT DAMAGE AND DEBRIS NEAR EXIT 236 ON I70...TREES DAMAGED...CELL PHONE TOWER BENT OVER...FLAG POLE AT AIRPORT BENT OVER...INTERSTATE SIGNS DOWN AND SMALL DEBRIS ON THE INTERSTATE |
| Apr 22, 8:30 PM CDT | TSTM WND DMG | Granite City, IL | ROOF DAMAGE TO ONE HOME ALONG WITH NUMEROUS TREE DAMAGE AT HIGHWAY 203 AND MAYVILLE ROAD |
| Apr 22, 8:30 PM CDT | TSTM WND GST 50 | Edwardsville, IL | |
| Apr 22, 8:32 PM CDT | TSTM WND DMG | St. Ann, MO | POWER LINES DOWN AT I-70 AND CYPRUS |
| Apr 22, 8:34 PM CDT | TORNADO | St. Ann, MO | TRACTOR TRAILERS STANDING ON END. |
| Apr 22, 8:35 PM CDT | FUNNEL CLOUD | Pontoon Beach, IL | FUNNEL CLOUD AT 270 |
| Apr 22, 8:35 PM CDT | TSTM WND DMG | Glen Carbon, IL | TRAILER FLIPPED IN FIELD USED AS BILLBOARD AT FIRST EXIT N ON 255 AND 270 |
| Apr 22, 8:48 PM CDT | TORNADO | Ferguson, MO | 2 LARGE TREES DOWN...AND MANY 1-5 INCH LIMBS 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 |
|---|---|---|---|
| Apr 22, 3:34 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.0 hours before the alert went out and 205 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.
- Mixed-layer CAPE
- 342 J/kg
- Mixed-layer CIN
- -152 J/kg
- Mixed-layer LCL
- 492 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 351 m²/s²
- 0-3 km storm-relative helicity
- 346 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
604
WFUS53 KLSX 230059
TORLSX
ILC119-163-MOC189-510-230145-
/O.NEW.KLSX.TO.W.0049.110423T0059Z-110423T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
759 PM CDT FRI APR 22 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHWESTERN MADISON COUNTY IN SOUTHWEST ILLINOIS...
NORTHWESTERN ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS...
NORTHEASTERN ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...
ST. LOUIS CITY IN EAST CENTRAL MISSOURI...
* UNTIL 845 PM CDT
* AT 755 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR MARYLAND HEIGHTS...AND MOVING EAST AT 40
MPH.
THIS STORM HAS A HISTORY OF DAMAGING TORNADOES.
* LOCATIONS IMPACTED INCLUDE...
DES PERES...CREVE COEUR...KIRKWOOD...FRONTENAC...WARSON WOODS...ST.
ANN...OAKLAND...LADUE...GLENDALE...OLIVETTE...OVERLAND...WOODSON
TERRACE...HAZELWOOD...WEBSTER GROVES...BRENTWOOD...ST. JOHN...
BERKELEY...RICHMOND HEIGHTS...UNIVERSITY CITY AND SHREWSBURY.
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.
&&
LAT...LON 3855 9004 3858 9058 3885 9035 3885 9023
3882 9020 3883 9015 3881 9012 3880 9012
3883 9011 3884 9012 3884 8993
TIME...MOT...LOC 0058Z 269DEG 34KT 3872 9048
$$
GLASS5 follow-up statements
932
WWUS53 KLSX 230109
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
809 PM CDT FRI APR 22 2011
ILC119-163-MOC189-510-230145-
/O.CON.KLSX.TO.W.0049.000000T0000Z-110423T0145Z/
ST. CLAIR IL-MADISON IL-ST. LOUIS CITY MO-ST. LOUIS MO-
809 PM CDT FRI APR 22 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN ST. LOUIS...
ST. LOUIS CITY...SOUTHWESTERN MADISON AND NORTHWESTERN ST. CLAIR
COUNTIES UNTIL 845 PM CDT...
...DAMAGING TORNADO ON THE GROUND JUST NORTH OF ST. ANN...
AT 807 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
CONFIRMED TORNADO. THIS TORNADO WAS LOCATED JUST NORTH OF ST.
ANN...MOVING EAST AT 40 MPH.
DAMAGE HAS BEEN REPORTED IN MARYLAND HEIGHTS.
LOCATIONS IMPACTED INCLUDE...
SHREWSBURY...WOODSON TERRACE...RICHMOND HEIGHTS...MAPLEWOOD...
CLAYTON...ST. JOHN...UNIVERSITY CITY...HAZELWOOD...BEL-RIDGE...
BERKELEY...KINLOCH...COOL VALLEY...NORMANDY...FLORISSANT...
HILLSDALE...FERGUSON...NORTHWOODS...DELLWOOD...ST. LOUIS AND
JENNINGS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3855 9004 3858 9058 3885 9035 3885 9023
3882 9020 3883 9015 3881 9012 3880 9012
3883 9011 3884 9012 3884 8993
TIME...MOT...LOC 0108Z 258DEG 36KT 3874 9039
$$
GLASS770
WWUS53 KLSX 230116
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
816 PM CDT FRI APR 22 2011
ILC119-163-MOC189-510-230145-
/O.CON.KLSX.TO.W.0049.000000T0000Z-110423T0145Z/
ST. CLAIR IL-MADISON IL-ST. LOUIS CITY MO-ST. LOUIS MO-
816 PM CDT FRI APR 22 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN ST. LOUIS...
NORTHERN ST. LOUIS CITY...SOUTHWESTERN MADISON AND NORTHWESTERN ST.
CLAIR COUNTIES UNTIL 845 PM CDT...
...DAMAGING TORNADO MOVING THROUGH NORTHERN ST. LOUIS COUNTY TOWARDS
THE NORTH PART OF THE CITY...
AT 814 PM CDT...THE TOWER AT LAMBERT AIRPORT REPORTED A TORNADO.
THIS TORNADO WAS LOCATED NEAR FERGUSON...MOVING EAST AT 40 MPH.
TAKE SHELTER NOW!
LOCATIONS IMPACTED INCLUDE...
DELLWOOD...JENNINGS...BLACK JACK...BELLEFONTAINE NEIGHBORS...
RIVERVIEW...SPANISH LAKE...VENICE...MADISON...GRANITE CITY...
WASHINGTON PARK...PONTOON BEACH...EDWARDSVILLE...BROOKLYN...
FAIRMONT CITY...HARTFORD...ROXANA...MITCHELL AND POAG.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPEAT...A TORNADO IS ON THE GROUND. 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.
&&
LAT...LON 3861 9005 3867 9043 3882 9034 3885 9024
3882 9020 3883 9015 3881 9012 3880 9012
3883 9011 3884 9012 3884 8993
TIME...MOT...LOC 0115Z 258DEG 36KT 3875 9029
$$
GLASS039
WWUS53 KLSX 230123
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
823 PM CDT FRI APR 22 2011
ILC119-163-MOC189-510-230145-
/O.CON.KLSX.TO.W.0049.000000T0000Z-110423T0145Z/
ST. CLAIR IL-MADISON IL-ST. LOUIS CITY MO-ST. LOUIS MO-
823 PM CDT FRI APR 22 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN ST. LOUIS...
NORTHERN ST. LOUIS CITY...SOUTHWESTERN MADISON AND NORTHWESTERN ST.
CLAIR COUNTIES UNTIL 845 PM CDT...
...DAMAGING TORNADO MOVING INTO THE NORTHERN PART OF THE CITY OF ST.
LOUIS...
AT 820 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
CONFIRMED TORNADO. THIS TORNADO WAS LOCATED NEAR RIVERVIEW...MOVING
EAST AT 45 MPH.
DAMAGE HAS BEEN REPORTED NEAR THE LAMBERT INTERNATIONAL AIRPORT
ALONG INTERSTATE 70.
LOCATIONS IMPACTED INCLUDE...
VENICE...MADISON...GRANITE CITY...WASHINGTON PARK...PONTOON
BEACH...EDWARDSVILLE...BROOKLYN...FAIRMONT CITY...HARTFORD...
MITCHELL AND POAG.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3861 9005 3869 9030 3877 9025 3880 9019
3883 9015 3881 9012 3880 9012 3883 9011
3883 8994
TIME...MOT...LOC 0122Z 267DEG 37KT 3875 9019
$$
GLASS086
WWUS53 KLSX 230129
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
829 PM CDT FRI APR 22 2011
MOC189-230137-
/O.CAN.KLSX.TO.W.0049.000000T0000Z-110423T0145Z/
ST. LOUIS MO-
829 PM CDT FRI APR 22 2011
...THE TORNADO WARNING FOR NORTHEASTERN ST. LOUIS COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3861 9005 3869 9025 3874 9023 3877 9017
3878 9014 3880 9012 3883 9011 3883 8994
TIME...MOT...LOC 0127Z 272DEG 33KT 3875 9015
$$
ILC119-163-MOC510-230145-
/O.CON.KLSX.TO.W.0049.000000T0000Z-110423T0145Z/
ST. CLAIR IL-MADISON IL-ST. LOUIS CITY MO-
829 PM CDT FRI APR 22 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN ST. LOUIS
CITY...SOUTHWESTERN MADISON AND NORTHWESTERN ST. CLAIR COUNTIES UNTIL
845 PM CDT...
...DAMAGING TORNADO MOVING INTO SOUTHEAST MADISON COUNTY ILLINOIS...
AT 825 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
CONFIRMED TORNADO. THIS TORNADO WAS LOCATED NORTHWEST OF GRANITE
CITY...MOVING EAST AT 40 MPH.
CONSIDERABLE DAMAGE HAS BEEN REPORTED WITH THIS TORNADO.
LOCATIONS IMPACTED INCLUDE...
GRANITE CITY...WASHINGTON PARK...PONTOON BEACH...EDWARDSVILLE...
FAIRMONT CITY...HARTFORD...MITCHELL AND POAG.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3861 9005 3869 9025 3874 9023 3877 9017
3878 9014 3880 9012 3883 9011 3883 8994
TIME...MOT...LOC 0127Z 272DEG 33KT 3875 9015
$$
GLASS042
WWUS53 KLSX 230146
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
846 PM CDT FRI APR 22 2011
ILC119-163-MOC510-230155-
/O.EXP.KLSX.TO.W.0049.000000T0000Z-110423T0145Z/
ST. CLAIR IL-MADISON IL-ST. LOUIS CITY MO-
846 PM CDT FRI APR 22 2011
...THE TORNADO WARNING FOR NORTHEASTERN ST. LOUIS CITY...SOUTHWESTERN
MADISON AND NORTHWESTERN ST. CLAIR COUNTIES HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA...HOWEVER A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
MADISON AND NORTHEASTERN ST. CLAIR COUNTIES UNTIL 915 PM CDT.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 1000 PM.
LAT...LON 3861 9005 3869 9025 3874 9023 3877 9017
3878 9014 3880 9012 3883 9011 3883 8994
TIME...MOT...LOC 0145Z 272DEG 33KT 3874 8994
$$
GLASSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 7:11 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Saint Charles, Warren | 49 min |
| Apr 22, 7:20 PM CDT | Tornado Warning | LSX | Franklin, Gasconade, Saint Charles | 40 min |
| Apr 22, 7:36 PM CDT | Tornado Warning | LSX | Saint Charles, Saint Louis | 39 min |
| Apr 22, 7:44 PM CDT | Tornado Warning | LSX | Reynolds | 16 min |
| Apr 22, 7:56 PM CDT | Tornado Warning | LSX | Franklin, Jefferson, Saint Louis | 42 min |
| Apr 22, 8:21 PM CDT | Tornado Warning | LSX | Jefferson, Saint Louis | 39 min |
| Apr 22, 9:00 PM CDT | Flash Flood Warning | LSX | Franklin, Jefferson, Saint Louis | 5 hr |
| Apr 22, 10:18 PM CDT | River Flood Warning | LSX | Jefferson | 8 days |
| Apr 22, 10:55 PM CDT | Flash Flood Warning | LSX | Crawford, Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more | 6 hr |
| Apr 22, 11:10 PM CDT | River Flood Warning | LSX | Lewis | 25 hr |
| Apr 22, 11:12 PM CDT | Tornado Warning | LSX | Iron, Madison, Sainte Genevieve, Saint Francois | 37 min |
| Apr 22, 11:53 PM CDT | River Flood Warning | LSX | Saint Louis, City of Saint Louis | 14 days |
| Apr 23, 1:21 AM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois | 30 min |
| Apr 23, 1:47 AM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 9 days |
| Apr 23, 4:23 AM CDT | Flash Flood Warning | LSX | Crawford, Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more | 8 hr |
| Apr 23, 6:45 AM CDT | River Flood Warning | LSX | Lewis | 39 hr |
| Apr 23, 12:29 PM CDT | Flash Flood Warning | LSX | Crawford, Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more | 6 hr |
| Apr 23, 4:59 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 46 min |
| Apr 23, 5:27 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Washington | 48 min |
| Apr 23, 5:41 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Jefferson, Washington | 33 min |
| Apr 23, 6:22 PM CDT | Flash Flood Warning | LSX | Crawford, Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more | 6 hr |
| Apr 22, 8:33 PM CDT | Tornado Warning | LSX | Madison, Saint Clair | 42 min |
| Apr 22, 8:48 PM CDT | Tornado Warning | LSX | Monroe, Saint Clair | 57 min |
| Apr 22, 8:55 PM CDT | Tornado Warning | LSX | Bond, Clinton, Fayette, Madison, Saint Clair | 50 min |
| Apr 22, 9:01 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 20 min |
| Apr 22, 9:24 PM CDT | Tornado Warning | LSX | Clinton, Washington | 36 min |
| Apr 22, 9:30 PM CDT | Flash Flood Warning | LSX | Monroe, Saint Clair | 5 hr |
| Apr 22, 9:41 PM CDT | Tornado Warning | LSX | Bond, Fayette, Marion | 22 min |
| Apr 22, 9:51 PM CDT | Flash Flood Warning | LSX | Clinton, Washington | 5 hr |
| Apr 22, 9:59 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion, Washington | 11 min |
| Apr 22, 10:31 PM CDT | Tornado Warning | LSX | Monroe, Randolph, Saint Clair | 44 min |
| Apr 22, 11:38 PM CDT | River Flood Warning | LSX | Brown | 25 days |
| Apr 22, 11:38 PM CDT | River Flood Warning | LSX | Morgan, Pike | 25 days |
| Apr 22, 11:38 PM CDT | River Flood Warning | LSX | Pike, Scott | 31 days |
Nearby
Tornado Warnings in Missouri, 2011Tornado Warnings in Illinois, 2011Every tornado warning in 2011Tornadoes 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.