Alert archive / Missouri / Tornado Warnings in 2013

Tornado Warning 9, NWS St. Louis, MO

April 10, 2013Franklin County, Saint Charles County, Saint Louis County, Missouri

NWS St. Louis, MO issued this tornado warning at Apr 10, 2013, 7:32 PM CDT for Franklin County, Saint Charles County, Saint Louis County, Missouri. It was in force for 28 min. 9 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 10, 2013, 7:32 PM CDT (00:32 UTC)
Expired
Apr 10, 2013, 8:00 PM CDT
In force
28 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Franklin County, MO, Saint Charles County, MO, Saint Louis County, MO

The radar

The St Louis radar (KLSX), 8 km from the middle of the area, began a volume at 00:32 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

TimeReportWhereRemark
Apr 10, 7:53 PM CDTTSTM WND GST 553 W Chesterfield, MO
Apr 10, 7:53 PM CDTTSTM WND GST 60St. Peters, MOAT MID RIVERS MALL DRIVE AND THE NORTH SERVICE ROAD AT I-70... WINDS BETWEEN 50 AND 60 MPH.
Apr 10, 7:54 PM CDTTSTM WND DMGSt. Peters, MOBETWEEN MID RIVERS MALL DRIVE AND HIGHWAY 79... POWER FLASHES OBSERVED.
Apr 10, 7:55 PM CDTTSTM WND DMG1 E Cottleville, MO2 MID-SIZED 20 FT TALL TREES DOWN ALONG HIGHWAY N BETWEEN COTTLEVILLE AND MID RIVERS MALL DRIVE BEHIND SCHNUCKS.
Apr 10, 7:55 PM CDTTSTM WND DMG1 Sw Cottleville, MO10-INCH BRANCH OFF TREE AT INTERSECTION OF NE END OF OLD GUTERMUTH BYPASS AND NEW GUTERMUTH ROADS.
Apr 10, 7:57 PM CDTTSTM WND DMG3 Ese Kampville, MOSIDING DAMAGE TO TWO HOMES IN NEW TOWN SUBDIVISION.
Apr 10, 8:00 PM CDTTSTM WND DMGWildwood, MOHOMESTEAD SUBDIVISON REPORTED LARGE TREES AND LIMBS DOWNED. A BRIEF POWER OUTAGE OCCURRED. THE WIND WAS ESTIMATED TO BE IN EXCESS OF 60 MILES PER HOUR.
Apr 10, 8:00 PM CDTTSTM WND GST 60Wildwood, MOHOMESTEAD SUBDIVISION REPORTED LARGE TREES AND LIMBS DOWNED. A BRIEF POWER OUTAGE OCCURRED. THE WIND WAS REPORTED TO BE IN EXCESS OF 60 MILES PER HOUR.
Apr 10, 8:06 PM CDTHAIL 1Maryland Heights, MOSTRONG WINDS AND LARGE HAIL AND WESTPORT PLAZA. WINDS OF 20 MPH OR GREATER.

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.

IssuedProductOfficeLasted
Apr 10, 1:46 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 247 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 2013-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2013-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
587 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

991 
WFUS53 KLSX 110032
TORLSX
MOC071-183-189-110100-
/O.NEW.KLSX.TO.W.0009.130411T0032Z-130411T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
732 PM CDT WED APR 10 2013

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
  EASTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
  NORTHERN ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 800 PM CDT

* AT 727 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR VILLA RIDGE...AND MOVING NORTHEAST AT 55
  MPH.

  HAZARD...DEVELOPING TORNADO.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
           SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
           OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
           EXTENSIVE TREE DAMAGE IS LIKELY.

* LOCATIONS IMPACTED INCLUDE...
  WILDWOOD...ELLISVILLE...CLARKSON VALLEY...WELDON SPRING...
  BALLWIN...CHESTERFIELD...COTTLEVILLE...ST. PETERS...TOWN AND
  COUNTRY...CREVE COEUR...MARYLAND HEIGHTS...BRIDGETON...ST. ANN...
  ST. CHARLES...OVERLAND...LAMBERT FIELD...WOODSON TERRACE...
  OLIVETTE...ST. JOHN AND BEL-RIDGE.

THIS WARNING INCLUDES BABLER MEMORIAL STATE PARK AND FIRST MISSOURI
STATE CAPITOL HISTORIC SITE.

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 3868 9028 3845 9089 3855 9098 3855 9097
      3856 9097 3891 9049
TIME...MOT...LOC 0033Z 238DEG 47KT 3853 9086

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

CVKING
4 follow-up statements
372 
WWUS53 KLSX 110041
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
741 PM CDT WED APR 10 2013

MOC071-183-189-110100-
/O.CON.KLSX.TO.W.0009.000000T0000Z-130411T0100Z/
FRANKLIN MO-ST. CHARLES MO-ST. LOUIS MO-
741 PM CDT WED APR 10 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN ST. LOUIS...
EASTERN ST. CHARLES AND NORTHEASTERN FRANKLIN COUNTIES UNTIL 800 PM
CDT...

AT 737 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 
WAS LOCATED JUST SOUTH OF DEFIANCE ALONG THE MISSOURI RIVER...AND 
MOVING NORTHEAST AT 55 MPH. 

HAZARD...DEVELOPING TORNADO.

SOURCE...RADAR INDICATED ROTATION. RADAR SHOWS VERY STRONG 
INDICATION OF TORNADO NEAR DEFIANCE.

IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
         SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
         OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
         EXTENSIVE TREE DAMAGE IS LIKELY.

LOCATIONS IMPACTED INCLUDE...
WILDWOOD...ELLISVILLE...CLARKSON VALLEY...BALLWIN...WELDON SPRING...
CHESTERFIELD...MANCHESTER...COTTLEVILLE...TOWN AND COUNTRY...ST.
PETERS...FRONTENAC...CREVE COEUR...MARYLAND HEIGHTS...ST. CHARLES...
BRIDGETON...ST. ANN...LAMBERT FIELD...WOODSON TERRACE...OVERLAND AND
ST. JOHN.

THIS WARNING INCLUDES BABLER MEMORIAL STATE PARK AND FIRST MISSOURI
STATE CAPITOL HISTORIC SITE.

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 3862 9089 3891 9049 3868 9028 3851 9074
TIME...MOT...LOC 0041Z 235DEG 49KT 3861 9074

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

CVKING
405 
WWUS53 KLSX 110046
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
746 PM CDT WED APR 10 2013

MOC071-110055-
/O.CAN.KLSX.TO.W.0009.000000T0000Z-130411T0100Z/
FRANKLIN MO-
746 PM CDT WED APR 10 2013

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

THE TORNADO HAS MOVED EAST OF THE WARNED AREA.

LAT...LON 3859 9073 3866 9073 3891 9049 3868 9028
TIME...MOT...LOC 0045Z 235DEG 53KT 3865 9066

$$

MOC183-189-110100-
/O.CON.KLSX.TO.W.0009.000000T0000Z-130411T0100Z/
ST. CHARLES MO-ST. LOUIS MO-
746 PM CDT WED APR 10 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN ST. LOUIS AND
CENTRAL ST. CHARLES COUNTIES UNTIL 800 PM CDT...

AT 743 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR WILDWOOD...AND
MOVING NORTHEAST AT 60 MPH.

HAZARD...DAMAGING TORNADO.

SOURCE...HAM RADIO OPERATERS CONFIRM THAT THERE HAS BEEN STRUCTURAL  
         DAMAGE NORTH OF UNION MISSOURI DUE TO A TORNADO. 

IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
         SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
         OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
         EXTENSIVE TREE DAMAGE IS LIKELY.

LOCATIONS IMPACTED INCLUDE...
CLARKSON VALLEY...WELDON SPRING...CHESTERFIELD...ST. PETERS...CREVE
COEUR...MARYLAND HEIGHTS...ST. CHARLES...OLIVETTE...OVERLAND...
BRIDGETON...ST. ANN...LAMBERT FIELD...WOODSON TERRACE...ST. JOHN...
BEL-RIDGE...HILLSDALE...HARVESTER AND GREENDALE.

THIS WARNING INCLUDES BABLER MEMORIAL STATE PARK AND FIRST MISSOURI
STATE CAPITOL HISTORIC SITE.

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 3859 9073 3866 9073 3891 9049 3868 9028
TIME...MOT...LOC 0045Z 235DEG 53KT 3865 9066

TORNADO...OBSERVED
HAIL...<.75IN

$$

CVKING
744 
WWUS53 KLSX 110053
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
753 PM CDT WED APR 10 2013

MOC183-189-110100-
/O.CON.KLSX.TO.W.0009.000000T0000Z-130411T0100Z/
ST. CHARLES MO-ST. LOUIS MO-
753 PM CDT WED APR 10 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN ST. LOUIS AND
EASTERN ST. CHARLES COUNTIES UNTIL 800 PM CDT...

AT 750 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR CHESTERFIELD...AND MOVING NORTHEAST AT 60 MPH.

HAZARD...DEVELOPING TORNADO.

SOURCE...RADAR INDICATED ROTATION. STRUCTURAL DAMAGE WAS REPORTED    
         NORTH OF UNION MISSOURI.

IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
         SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
         OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
         EXTENSIVE TREE DAMAGE IS LIKELY.

LOCATIONS IMPACTED INCLUDE...
CREVE COEUR...MARYLAND HEIGHTS...ST. CHARLES...OLIVETTE...OVERLAND...
BRIDGETON...ST. ANN...LAMBERT FIELD...WOODSON TERRACE...ST. JOHN...
BEL-RIDGE...HILLSDALE AND GREENDALE.

THIS WARNING INCLUDES FIRST MISSOURI STATE CAPITOL HISTORIC SITE.

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 3863 9056 3876 9064 3891 9049 3868 9028
TIME...MOT...LOC 0053Z 235DEG 53KT 3872 9054

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

CVKING
983 
WWUS53 KLSX 110059
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
759 PM CDT WED APR 10 2013

MOC183-189-110108-
/O.EXP.KLSX.TO.W.0009.000000T0000Z-130411T0100Z/
ST. CHARLES MO-ST. LOUIS MO-
759 PM CDT WED APR 10 2013

...THE TORNADO WARNING FOR NORTHERN ST. LOUIS AND EASTERN ST. CHARLES
COUNTIES WILL EXPIRE AT 800 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS LOST THE INTENSE 
CIRCULATION AND POSSIBLE TORNADO.

LAT...LON 3863 9056 3876 9064 3891 9049 3868 9028
TIME...MOT...LOC 0058Z 235DEG 53KT 3876 9046

$$

CVKING

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 10, 7:11 PM CDTSevere Thunderstorm WarningLSXCrawford, Franklin, Jefferson, Saint Charles, Saint Francois, Saint Louis and 1 more49 min
Apr 10, 7:13 PM CDTAreal Flood AdvisoryLSXAudrain, Crawford, Franklin, Gasconade, Monroe, Montgomery and 2 more6 hr
Apr 10, 7:17 PM CDTTornado WarningLSXFranklin28 min
Apr 10, 7:21 PM CDTTornado WarningLSXFranklin24 min
Apr 10, 7:25 PM CDTSevere Thunderstorm WarningLSXFranklin, Lincoln, Montgomery, Pike, Saint Charles, Saint Louis and 1 more50 min
Apr 10, 7:52 PM CDTSevere Thunderstorm WarningLSXJefferson, Saint Louis, City of Saint Louis23 min
Apr 10, 8:04 PM CDTSevere Thunderstorm WarningLSXIron, Jefferson, Sainte Genevieve, Saint Francois, Washington41 min
Apr 10, 8:04 PM CDTTornado WarningLSXSaint Charles, Saint Louis26 min
Apr 10, 8:07 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Saint Louis, City of Saint Louis53 min
Apr 10, 8:08 PM CDTTornado WarningLSXCity of Saint Louis37 min
Apr 10, 8:11 PM CDTAreal Flood AdvisoryLSXMarion, Monroe, Pike, Ralls, Shelby6 hr
Apr 10, 8:14 PM CDTRiver Flood WarningLSXReynolds69 hr
Apr 10, 9:24 PM CDTRiver Flood WarningLSXMarion48 hr
Apr 11, 4:22 AM CDTRiver Flood WarningLSXLewis40 hr
Apr 11, 4:22 AM CDTRiver Flood WarningLSXMarion47 hr
Apr 11, 4:39 AM CDTRiver Flood WarningLSXLincoln52 hr
Apr 11, 4:39 AM CDTRiver Flood WarningLSXSaint Charles32 hr
Apr 11, 4:39 AM CDTRiver Flood WarningLSXMonroe54 hr
Apr 11, 6:44 AM CDTRiver Flood WarningLSXCole39 hr
Apr 11, 8:27 AM CDTRiver Flood WarningLSXLewis65 hr
Apr 11, 11:57 AM CDTRiver Flood WarningLSXMarion95 days
Apr 11, 11:57 AM CDTRiver Flood WarningLSXRalls49 hr
Apr 11, 11:57 AM CDTRiver Flood WarningLSXPike96 days
Apr 11, 11:57 AM CDTRiver Flood WarningLSXPike97 days
Apr 11, 11:57 AM CDTRiver Flood WarningLSXSaint Charles96 days

Nearby

Tornado Warnings in Missouri, 2013Every tornado warning in 2013Tornadoes in 2013

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.