

973 

WGUS75 KBOU 130933

FFSBOU



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE DENVER CO

333 AM MDT FRI SEP 13 2013



COC013-059-130945-

/O.CON.KBOU.FF.W.0066.000000T0000Z-130913T0945Z/

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

JEFFERSON CO-BOULDER CO-

333 AM MDT FRI SEP 13 2013



...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM MDT FOR

NORTHERN JEFFERSON AND BOULDER COUNTIES...



AT 323 AM MDT...LOCAL LAW ENFORCEMENT REPORTED FLASH FLOODING 

CONTINUING IN BOULDER AND NORTHERN JEFFERSON COUNTIES. 



SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...

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

SOUTHWESTERN BROOMFIELD...LAFAYETTE...NORTHWESTERN GOLDEN...

LOUISVILLE...SUPERIOR...LYONS...NEDERLAND...JAMESTOWN...WARD...

SALINA...NIWOT...ELDORA...ALLENSPARK...WALLSTREET...ROCKY FLATS...

BRAINARD LAKE...WHITE RANCH OPEN SPACE...ELDORADO SPRINGS...

CRISMAN...GOLD HILL...SUMMERVILLE...PEACEFUL VALLEY...RAYMOND...

MEEKER PARK...SUNSHINE AND LONGS PEAK.



ON BOULDER CREEK IN THE CITY OF BOULDER WATER HAD RECEDED ABOUT ONE 

FOOT FROM THE CREST AROUND MIDNIGHT. SIGNIFICANT FLOODING WAS STILL 

OCCURRING AND WATER LEVELS WERE OUT OF THE BANKS AND STEADY 

UPSTREAM. THE CREST WAS PROCEEDING DOWNSTREAM...WITH SIGNIFICANT 

FLOODING OF LOW LYING AREAS AND ROADS EAST OF BOULDER TO NEAR ERIE. 

FLOODING WAS ALSO CONTINUING ON SOUTH BOULDER CREEK FROM ELDORADO 

SPRINGS THROUGH EASTERN BOULDER AND ALONG ROCK CREEK AND COAL CREEK 

FROM JEFFERSON COUNTY DOWNSTREAM TO LAFAYETTE AND ERIE. 



IN NORTHERN BOULDER COUNTY THE CREST ON THE ST VRAIN RIVER WAS NEAR 

HYGIENE...AND WATER CONTINUED TO RISE ON THE ST VRAIN RIVER IN 

LONGMONT. LEFTHAND CREEK WAS ALSO FLOODING ACROSS HIGHWAY 119 

SOUTHWEST OF LONGMONT...WHILE IT HAD FALLEN SLIGHTLY BUT WAS STILL 

HIGH IF LEFTHAND CANYON. THESE FLOOD WATERS WILL CONTINUE TO MOVE 

DOWNSTREAM AND ADDITIONAL ROAD CLOSURES MAY BE NECESSARY IN EASTERN 

BOULDER COUNTY AND POSSIBLY INTO WELD COUNTY OVER THE NEXT SEVERAL 

HOURS. 



EVEN WHERE THE STREAMS HAVE CRESTED...MANY REMAIN OUT OF THEIR BANKS 

AND ARE STILL DANGEROUS. STAY AWAY FROM FLOODED AREAS AND ERODED 

STREAM BANKS. CHECK WITH LOCAL AUTHORITIES FOR EVACUATION STATUS AND 

ROAD CLOSURES.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES WILL 

CONTINUE THIS MORNING. ADDITIONALLY... COUNTRY ROADS AND FARMLANDS 

ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE 

SUBJECT TO FLOODING.



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

DEATHS OCCUR IN VEHICLES.



&&



LAT...LON 4009 10510 3990 10514 3991 10516 3990 10516

      3989 10514 3990 10511 3982 10510 3972 10527

      3986 10540 3993 10541 3993 10565 4010 10561

      4026 10563 4026 10515



$$



GIMMESTAD

