Alert archive / Missouri / Tornado Warnings in 2010

Tornado Warning 75, NWS St. Louis, MO

November 24, 2010Monroe County, Saint Clair County, Illinois; 4 counties in Missouri

NWS St. Louis, MO issued this tornado warning at Nov 24, 2010, 11:03 PM CST for Monroe County, Saint Clair County, Illinois; 4 counties in Missouri. It was in force for 42 min. 1 report 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
Nov 24, 2010, 11:03 PM CST (05:03 UTC)
Expired
Nov 24, 2010, 11:45 PM CST
In force
42 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon

Counties Monroe County, IL, Saint Clair County, IL, Jefferson County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 63 km from the middle of the area, began a volume at 05:05 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
Nov 24, 11:24 PM CSTTSTM WND GST 45Valmeyer, IL

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
Nov 24, 8:23 PM CSTTornado WatchSPC8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.1 hours before the alert went out and 267 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 2010-11-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2010-11-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 195 square meters per square second.1939587897117136Sfc1 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
423 m above ground
0-6 km bulk shear
97 kt
0-1 km storm-relative helicity
195 m²/s²
0-3 km storm-relative helicity
279 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

105 
WFUS53 KLSX 250503
TORLSX
ILC133-163-MOC099-186-187-221-250545-
/O.NEW.KLSX.TO.W.0075.101125T0503Z-101125T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1103 PM CST WED NOV 24 2010

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  MONROE COUNTY IN SOUTHWEST ILLINOIS...
  CENTRAL ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS...
  JEFFERSON COUNTY IN EAST CENTRAL MISSOURI...
  NORTHWESTERN STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI...
  ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI...
  NORTHERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 1145 PM CST

* AT 1101 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING SEVERAL 
  TORNADOES.   THESE DANGEROUS STORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM ANTONIA TO 8 MILES WEST OF POTOSI...AND MOVING EAST
  AT 40 TO 50 MPH.  

* LOCATIONS IMPACTED INCLUDE...
  ANTONIA...HILLSBORO...ARNOLD...POTOSI...BARNHART...DE SOTO...
  PEVELY...HERCULANEUM...FESTUS...CRYSTAL CITY...BONNE TERRE...
  DESLOGE...WATERLOO...FREEBURG...OLD MINES...MINERAL POINT...
  FOUNTAIN...VALMEYER...OLYMPIAN VILLAGE AND NEW DESIGN.

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.

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

&&

LAT...LON 3787 9100 3843 9049 3844 9034 3839 9034
      3845 9029 3847 8984 3811 9013 3809 9020
      3807 9016 3786 9033
TIME...MOT...LOC 0503Z 266DEG 33KT 3841 9044 3791 9090

$$

TRUETT
1 follow-up statement
630 
WWUS53 KLSX 250526
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1126 PM CST WED NOV 24 2010

ILC133-163-MOC099-186-187-221-250545-
/O.CON.KLSX.TO.W.0075.000000T0000Z-101125T0545Z/
MONROE IL-ST. CLAIR IL-ST. FRANCOIS MO-STE. GENEVIEVE MO-
WASHINGTON MO-JEFFERSON MO-
1126 PM CST WED NOV 24 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN JEFFERSON...
EAST CENTRAL WASHINGTON...NORTHWESTERN STE. GENEVIEVE...ST.
FRANCOIS...CENTRAL ST. CLAIR AND MONROE COUNTIES UNTIL 1145 PM CST...

AT 1123 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING SEVERAL 
TORNADOES.  THESE DANGEROUS STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM COLUMBIA TO OLYMPIAN VILLAGE TO MINERAL 
POINT...MOVING EAST AT 40 TO 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  WATERLOO...MILLSTADT...BONNE TERRE...FREEBURG...NEW DESIGN...
  SMITHTON...BLOOMSDALE...FOSTER POND...MONROE CITY...MADONNAVILLE...
  CHALFIN BRIDGE...VALLES MILL...WARTBURG...MAEYSTOWN...BARR...
  BURKSVILLE...FULTS...FLORAVILLE...PADERBORN AND RENAULT.

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.

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

&&

LAT...LON 3840 9034 3842 9031 3845 9029 3847 8984
      3811 9013 3809 9021 3808 9019 3807 9017
      3791 9033 3791 9084
TIME...MOT...LOC 0525Z 266DEG 33KT 3842 9018 3816 9036
          3795 9072

$$

TRUETT

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 24, 11:46 PM CSTTornado WarningLSXMonroe, Randolph, Saint Clair, Washington44 min
Nov 25, 3:31 AM CSTAreal Flood AdvisoryLSXBond, Calhoun, Clinton, Fayette, Jersey, Macoupin and 4 more6 hr
Nov 24, 7:26 PM CSTSevere Thunderstorm WarningLSXFranklin, Gasconade, Osage34 min
Nov 24, 9:06 PM CSTSevere Thunderstorm WarningLSXSaint Louis24 min
Nov 24, 9:26 PM CSTAreal Flood AdvisoryLSXCrawford, Franklin, Gasconade, Jefferson, Osage, Saint Charles and 4 more6 hr
Nov 24, 9:39 PM CSTTornado WarningLSXCrawford, Franklin, Washington51 min
Nov 24, 10:25 PM CSTTornado WarningLSXCrawford, Washington50 min
Nov 24, 10:31 PM CSTTornado WarningLSXFranklin, Jefferson, Washington44 min
Nov 25, 2:45 PM CSTRiver Flood WarningLSXOsage5 hr

Nearby

Tornado Warnings in Missouri, 2010Tornado Warnings in Illinois, 2010Every tornado warning in 2010Tornadoes in 2010

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.