Flash Flood Warning 13, NWS St. Louis, MO

Issued

Apr 23, 2011, 6:22 PM CDT (23:22 UTC)

Expired

Apr 24, 2011, 12:30 AM CDT

In force

6 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 23:23 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

040 
WGUS53 KLSX 232322
FFWLSX
ILC133-157-MOC055-093-123-179-186-187-221-240530-
/O.NEW.KLSX.FF.W.0013.110423T2322Z-110424T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
622 PM 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 AM CDT

* AT 617 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  ANOTHER LARGE AREA OF THUNDERSTORMS PUSHING FROM SOUTH CENTRAL
  INTO SOUTHEAST MISSOURI AND SOUTHWEST ILLINOIS.  RAINFALLS OF
  OVER AN INCH MAY OCCUR IN LESS IN AN HOURS TIME...WHICH COULD
  LEAD TO DANGEROUS FLOODING DUE TO THE SATURATED GROUND OVER
  SOUTHEAST MISSOURI AND SOUTHWEST ILLINOIS. AREAS ALONG AND SOUTH
  OF A BIXBY MISSOURI...SPARTA ILLINOIS LINE ARE OF SPECIAL 
  CONCERN.   

* 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...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO 
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO 
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN 
WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO 
STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY 
RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR CREEKS.

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

719 
WGUS73 KLSX 240241
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
941 PM CDT SAT APR 23 2011

ILC133-157-MOC055-093-123-179-186-187-221-240530-
/O.CON.KLSX.FF.W.0013.000000T0000Z-110424T0530Z/
/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-
941 PM 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 AM CDT...

...RISING WATER LEVELS EXPECTED ON THE UPPER REACHES OF THE EAST 
FORK OF THE BLACK RIVER...

FLOWS DOWNSTREAM OF THE LOWER RESERVOIR OF THE TAUM SAUK DAM HAVE 
INCREASED TO ABOVE 5000 CUBIC FEET PER SECOND.  AT THIS FLOW RATE 
THE EAST FORK OF THE BLACK RIVER CAN BE EXPECTED TO RISE 4 TO 6 FEET 
ABOVE NORMAL AT HIGHWAY 21 NEAR LESTERVILLE.  THIS IS NOT DUE TO A 
DAM FAILURE...BUT RATHER DUE TO THE RECENT HEAVY RAIN.   

RESIDENTS AND RECREATIONAL INTERESTS ALONG THE EAST FORK OF THE 
BLACK RIVER ARE ADVISED TO BE ALERT FOR RAPIDLY RISING WATER LEVELS 
AND FLOODING...AND MAKE ALL PREPARATIONS TO LEAVE LOW AREAS THAT 
MIGHT BECOME FLOODED.   
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT 
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT 
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.