
167 
WGUS54 KLIX 020751
FFWLIX
LAC103-021400-
/O.EXT.KLIX.FF.W.0081.000000T0000Z-120902T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
251 AM CDT SUN SEP 2 2012

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  CENTRAL ST. TAMMANY PARISH IN SOUTHEAST LOUISIANA...

* UNTIL 900 AM CDT

* AT 246 AM CDT...ST TAMMANY PARISH OFFICE OF EMERGENCY MANAGEMENT 
AND THE CORPS OF ENGINEERS CONTINUE TO REVIEW THE STRUCTURAL 
INTEGRITY OF THE PEARL RIVER DIVERSION CANAL LOCK AND DAM NUMBER TWO 
THAT IS EXPECTED TO FAIL. HEAVY SCOUR HAS TAKEN PLACE ALONGSIDE THE 
RELIEF SILL. THE BOGUE CHITTO RIVER STAGE READING AT BUSH WAS 19.75 
FEET AT 215 AM CDT. 

  THIS IS A FLASH FLOOD WARNING IS FOR ALL RESIDENTS AND INTEREST 
DOWNSTREAM OF PEARL RIVER LOCK AND DAM #2 NEAR BUSH DOWNSTREAM TO 
HIGHWAY 36 AT HICKORY FOR AREAS EAST OF HIGHWAY 41. 

THE FOLLOWING ARE SOME MORE DETAILS REGARDING THE FLASH FLOOD 
WARNING FOR THE PEARL RIVER DIVERSION CANAL. 

IF AND WHEN THE STRUCTURE FAILS...THE ESTIMATED INITIAL FLOOD WAVE 
IS EXPECTED TO BE AROUND 11 FEET. 

THE CAMPGROUND ONE-HALF MILE DOWNSTREAM OF THE LOCK STRUCTURE IS 
ESTIMATED TO GET ABOUT 10 FEET OF FLOOD WAVE. THIS CAMPGROUND AND 
NEARBY RESIDENTS HAVE BEEN EVACUATED. 

TRAVEL TIME OF THE FLOOD WAVE TO LOCK AND DAM NUMBER ONE...11 MILES 
DOWNSTREAM...IS ESTIMATED TO BE ONE HOUR WITH A FLOOD WAVE ESTIMATED 
TO BE 5.5 FEET. THIS STRUCTURE WILL OFFER SOME RESISTANCE TO FURTHER 
TRAVEL DOWNSTREAM. 

IF THE WAVE SHOULD CONTINUE BEYOND LOCK AND DAM NUMBER ONE...
AT INTERSTATE 59 AT THE PEARL RIVER...18 MILES DOWNSTREAM...A FLOOD 
WAVE OF AN ADDITIONAL 2.5 FEET OF WATER LEVEL WOULD REACH THAT POINT 
BETWEEN 2 AND 4 HOURS OF PASSING LOCK AND DAM NUMBER ONE. 

THESE HEIGHTS AND TIMES ARE ESTIMATES AS COORDINATED WITH THE LOWER 
MISSISSIPPI RIVER FORECAST CENTER. AT THIS TIME...THE STRUCTURE IS 
STILL INTACT AND RELIEF VALVES HAVE BEEN OPENED TO LESSEN SOME 
PRESSURE ON THE STRUCTURE. 

PERSONS AND INTERESTS IN THIS WARNED AREA SHOULD NOT RETURN UNTIL 
THE LOCAL OFFICIALS GIVE THE ALL CLEAR. THIS REMAINS A DANGEROUS 
SITUATION WITHIN A LIMITED AREA NEAR AND DOWNSTREAM OF THE PEARL 
RIVER DIVERSION CANAL BELOW LOCK AND DAM NUMBER TWO.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLOOD WATERS WILL MOVE DOWN THE PEARL RIVER DIVERSION CANAL FROM THE 
LOCK NUMBER 2 TO HICKORY. 

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.

LAT...LON 3059 8981 3057 8981 3051 8976 3042 8974
      3042 8978 3047 8981 3051 8982 3054 8987
      3059 8987

$$