

077 

WGUS75 KBOU 122314

FFSBOU



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE DENVER CO

514 PM MDT THU SEP 12 2013



COC013-059-130130-

/O.CON.KBOU.FF.W.0058.000000T0000Z-130913T0130Z/

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

JEFFERSON CO-BOULDER CO-

514 PM MDT THU SEP 12 2013



...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM MDT FOR

NORTHWESTERN JEFFERSON AND BOULDER COUNTIES...



AT 507 PM MDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED 

THAT HEAVY RAIN WAS FALLING OVER THE AREA. BETWEEN 1 AND 2 INCHES OF 

RAIN HAS FALLEN IN THE LAST COUPLE HOURS...WITH AN ADDITIONAL 1 TO 2 

INCHES EXPECTED AS A BAND OF VERY HEAVY RAIN PUSHES VERY SLOWLY WEST 

FROM THE LYONS...BOULDER...AND ROCKY FLATS AREA BACK INTO THE 

FOOTHILLS.  THIS WILL FALL ON TOP OF THE 5 TO 11 INCHES OF RAIN THAT 

ALREADY HAS FALLEN IN THIS AREA. 

 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...

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

LONGMONT...SOUTHWESTERN BROOMFIELD...LAFAYETTE...LOUISVILLE...

SUPERIOR...LYONS...JAMESTOWN...SALINA...ELDORADO SPRINGS...CRISMAN...

GOLD HILL...NIWOT...SUMMERVILLE...WALLSTREET...ROCKY FLATS...

RAYMOND...SUNSHINE...WHITE RANCH OPEN SPACE AND ALLENSPARK.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



THIS IS A LIFE THREATENING SITUATION FOR PEOPLE ALONG BOULDER CREEK 

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

CANYON....LEFTHAND CANYON...AND ST VRAIN CANYON THROUGH THE TOWN OF 

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. NUMEROUS ROADS AND BRIDGES HAVE BEEN WASHED OUT.



SOME DRAINAGE BASINS IMPACTED INCLUDE BOULDER CREEK...FOURMILE 

CREEK...GOLD RUN...FOURMILE CANYON CREEK...WONDERLAND 

CREEK...LEFTHAND CREEK...AND THE ST VRAIN. 

 

SEVERE DEBRIS FLOWS AND ROCK SLIDES CAN ALSO BE ANTICIPATED ACROSS 

ROADS. ROADWAYS AND BRIDGES WILL BE WASHED AWAY IN PLACES.  IF YOU 

ENCOUNTER FLOOD WATERS...CLIMB TO SAFETY.



TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD

DEATHS OCCUR IN VEHICLES.



&&



LAT...LON 4026 10518 4008 10509 3993 10515 3990 10514

      3991 10516 3988 10515 3981 10517 3974 10530

      3989 10541 3993 10540 3994 10544 3997 10546

      4026 10546



$$



BARJENBRUCH

