

112 

WGUS75 KBOU 120734

FFSBOU



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE DENVER CO

134 AM MDT THU SEP 12 2013



COC013-059-121015-

/O.CON.KBOU.FF.W.0034.000000T0000Z-130912T1015Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

JEFFERSON CO-BOULDER CO-

134 AM MDT THU SEP 12 2013



...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 AM MDT FOR

NORTHERN JEFFERSON AND BOULDER COUNTIES...



...FLASH FLOOD EMERGENCY CONTINUES FOR NORTHERN JEFFERSON AND 

BOULDER COUNTIES...



AT 129 AM MDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED 

THAT HEAVY RAIN WAS FALLING OVER THE AREA. LOCAL LAW ENFORCEMENT AND 

EMERGENCY MANAGEMENT REPORTED FLASH FLOODING IN SEVERAL LOCATIONS.  

4 TO 6 INCHES OF RAIN HAS FALLEN IN SOME PLACES THIS EVENING WITH UP 

TO 7 INCHES IN A FEW LOCATIONS. FLASH FLOODING IS ALREADY OCCURRING 

IN MANY LOCATIONS AND THIS AN EXTREMELY DANGEROUS AND LIFE 

THREATENING SITUATION.



SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...NORTHWESTERN 

ARVADA...WESTERN WESTMINSTER...BOULDER...WESTERN 

BROOMFIELD...LAFAYETTE...LOUISVILLE...ERIE...SUPERIOR...LYONS... 

JAMESTOWN...SALINA...ELDORADO SPRINGS...CRISMAN...GOLD HILL... 

NIWOT...SUMMERVILLE...PEACEFUL VALLEY...ALLENSPARK...WALLSTREET... 

ROCKY FLATS...RAYMOND...MEEKER PARK...SUNSHINE AND WHITE RANCH OPEN 

SPACE.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



MOVE TO HIGHER GROUND NOW. THIS IS AN EXTREMELY DANGEROUS AND LIFE 

THREATENING SITUATION. DO NOT ATTEMPT TO TRAVEL UNLESS YOU ARE 

FLEEING AN AREA SUBJECT TO FLOODING OR UNDER AN EVACUATION ORDER.



THIS IS A LIFE THREATENING SITUATION FOR PEOPLE ALONG BOULDER CREEK 

IN THE CITY OF BOULDER...IN THE FOURMILE BURN AREA...BOULDER 

CANYON...LEFT HAND CANYON AND SAINT VRAIN CREEK AREA INCLUDING 

LYONS. 

 

HEAVY RAINFALL WILL CAUSE EXTENSIVE AND SEVERE FLASH FLOODING OF 

CREEKS AND STREAMS FROM THE FOURMILE BURN AREA DOWNSTREAM THROUGH 

THE CITY OF BOULDER.  SOME DRAINAGE BASINS IMPACTED INCLUDE BOULDER 

CREEK...FOURMILE CREEK...GOLD RUN...FOURMILE CANYON CREEK... AND 

WONDERLAND CREEK.  SEVERE DEBRIS FLOWS CAN ALSO BE ANTICIPATED 

ACROSS ROADS.  ROADWAYS AND BRIDGES MAY BE WASHED AWAY IN PLACES.  

IF YOU ENCOUNTER FLOOD WATERS...CLIMB TO SAFETY.



EXCESSIVE RUNOFF WILL CAUSE FLASH FLOODING OF CREEKS AND 

STREAMS...ROADS AND ROADSIDE CULVERTS.  THE HEAVY RAINS COULD ALSO 

TRIGGER ROCK SLIDES OR DEBRIS FLOWS IN STEEP TERRAIN.



BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 

DANGERS OF FLOODING.



&&



LAT...LON 4011 10515 4010 10505 3996 10505 3994 10511

      3995 10513 3993 10515 3991 10510 3985 10509

      3978 10521 3977 10540 3992 10539 3994 10545

      4026 10555 4026 10524



$$



RPK

