Flash Flood Warning 11, NWS St. Louis, MO

Issued

Apr 23, 2011, 4:23 AM CDT (09:23 UTC)

Expired

Apr 23, 2011, 12:30 PM CDT

In force

8 hr

Issued by

NWS St. Louis, MO

Area

Storm-based polygon

Flood severity

None

Counties Monroe County, IL, Randolph County, IL, Crawford County, MO, Iron County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO

The St Louis radar (KLSX), 120 km from the middle of the area, began a volume at 09:24 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.

247 
WGUS53 KLSX 230923
FFWLSX
ILC133-157-MOC055-093-123-179-186-187-221-231730-
/O.NEW.KLSX.FF.W.0011.110423T0923Z-110423T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
423 AM CDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  IRON COUNTY IN SOUTHEAST MISSOURI...
  MADISON COUNTY IN SOUTHEAST MISSOURI...
  RANDOLPH COUNTY IN SOUTHWEST ILLINOIS...
  REYNOLDS COUNTY IN SOUTHEAST MISSOURI...
  SOUTHEASTERN CRAWFORD COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHEASTERN MONROE COUNTY IN SOUTHWEST ILLINOIS...
  SOUTHERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...
  ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI...
  STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 1230 PM CDT

* AT 419 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL MOVING INTO THE 
  WARNED AREA. FLASH FLOODING WAS ALREADY OCCURRING IN THIS AREA DUE 
  TO HEAVY RAIN FROM THE PREVIOUS ROUND OF THUNDERSTORMS...THEREFORE
  THE ADDITIONAL HEAVY RAINFALL WILL CAUSE FLASH FLOODING TO         
  CONTINUE.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BISMARCK...BONNE TERRE...CHESTER...DESLOGE...FARMINGTON...
  FREDERICKTOWN...IRONTON...LEADWOOD...POTOSI...RED BUD...SPARTA...
  STE. GENEVIEVE...ANNAPOLIS...ARCADIA...BALDWIN...BELLEVIEW...
  BIXBY...BLOOMSDALE...BREMEN...BUCKHORN...COFFMAN...COULTERVILLE...
  COURTOIS...ELLINGTON...EVANSVILLE...GARWOOD...GLOVER...IRON
  MOUNTAIN...IRONDALE AND JUNCTION CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT ONLY TAKES A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

&&

LAT...LON 3706 9097 3720 9114 3750 9122 3751 9132
      3760 9132 3760 9117 3769 9117 3770 9132
      3779 9137 3794 9108 3804 9042 3823 9004
      3821 8960 3795 8960 3781 8969 3788 8993
      3765 9014 3732 9015 3727 9073 3705 9079

$$

KANOFSKY

859 
WGUS73 KLSX 231602
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1102 AM CDT SAT APR 23 2011

ILC133-157-MOC055-093-123-179-186-187-221-231730-
/O.CON.KLSX.FF.W.0011.000000T0000Z-110423T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RANDOLPH IL-MONROE IL-REYNOLDS MO-MADISON MO-IRON MO-ST. FRANCOIS MO-
STE. GENEVIEVE MO-WASHINGTON MO-CRAWFORD MO-
1102 AM CDT SAT APR 23 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHEASTERN CRAWFORD...
SOUTHERN WASHINGTON...STE. GENEVIEVE...ST. FRANCOIS...IRON...
MADISON...REYNOLDS...SOUTHEASTERN MONROE AND RANDOLPH COUNTIES UNTIL
1230 PM CDT...

AT 1053 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
LIGHT TO MODERATE RAIN...ALONG WITH OCCASIONAL THUNDERSTORMS...WERE 
CONTINUING ACROSS SOUTHEAST MISSOURI.  THIS ADDED RAIN WILL CONTINUE 
THE FLOOD AND FLASH FLOOD THREAT ACROSS THE AREA INTO THE MIDDAY 
HOUR.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BISMARCK...BONNE TERRE...CHESTER...DESLOGE...FARMINGTON...
FREDERICKTOWN...IRONTON...LEADWOOD...POTOSI...RED BUD...SPARTA...STE.
GENEVIEVE...ANNAPOLIS...ARCADIA...BALDWIN...BELLEVIEW...BIXBY...
BLOOMSDALE...BREMEN...BUCKHORN...COFFMAN...COULTERVILLE...COURTOIS...
ELLINGTON...EVANSVILLE...GARWOOD...GLOVER...IRON MOUNTAIN...IRONDALE
AND JUNCTION CITY.

THE MISSOURI DEPARTMENT OF TRANSPORTATION INDICATES THAT FLOODING 
HAS CLOSED HIGHWAY F IN SOUTHERN IRON COUNTY.  FLOODING ALONG THE 
ST. FRANCOIS RIVER HAS ALSO CLOSED MISSOURI ROUTE 221 IN ST. 
FRANCOIS COUNTY...AND FLOODING IS LIKELY OCCURRING IN MOST LOW WATER 
CROSSINGS IN THE REGION.     

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR
OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND
IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO
CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

IN HILLY TERRAIN...THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH
ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL
ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT ONLY TAKES A FEW
INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

&&

LAT...LON 3706 9097 3720 9114 3750 9122 3751 9132
      3760 9132 3760 9117 3769 9117 3770 9132
      3779 9137 3794 9108 3804 9042 3823 9004
      3821 8960 3795 8960 3781 8969 3788 8993
      3765 9014 3732 9015 3727 9073 3705 9079

$$

TRUETT

Flash Flood Warnings in Missouri, 2011Flash Flood Warnings in Illinois, 2011Every flash flood warning in 2011

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.