Flash Flood Watch for All of Jeffco, Park Co/Clear Creek County <9,000'

FLOOD WATCH
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
723 AM MDT SAT MAY 9 2015

...THREAT OF FLASH FLOODS ACROSS NORTHEAST COLORADO TODAY...

.AFTER A WEEK OF RAINY CONDITIONS OVER NORTHEAST COLORADO COUPLED
WITH THE ONGOING SHOWERS AND THUNDERSTORMS THIS MORNING...A
POTENT STORM SYSTEM IS GOING TO MOVE INTO COLORADO TODAY. THIS
STORM SYSTEM WILL BE CAPABLE OF PRODUCING THUNDERSTORMS AND RAIN
SHOWERS WITH HEAVY RAINFALL AT TIMES. SATURATED SOILS ACROSS
NORTHEAST COLORADO WILL NOT BE ABLE TO ABSORB MUCH ADDITIONAL
RAINFALL WHICH WILL LEAD TO LOCALIZED FLOODING PROBLEMS DURING AND
AFTER THE PASSAGE OF RAIN SHOWERS.

COZ035-036-038>047-049-092130-
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LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
WASHINGTON COUNTY-
INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND...
RED FEATHER LAKES...BAILEY...CENTRAL CITY...EVERGREEN...
GEORGETOWN...IDAHO SPRINGS...WESTCREEK...FORT COLLINS...
HEREFORD...LOVELAND...NUNN...ARVADA...BOULDER...GOLDEN...
LAKEWOOD...LONGMONT...AURORA...BRIGHTON...CITY OF DENVER...
DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON...
PARKER...CASTLE ROCK...ELBERT...FONDIS...KIOWA...LARKSPUR...
BRIGGSDALE...GROVER...PAWNEE BUTTES...RAYMER...STONEHAM...EATON...
FORT LUPTON...GREELEY...ROGGEN...BRUSH...FORT MORGAN...GOODRICH...
WIGGINS...BENNETT...BYERS...DEER TRAIL...LEADER...AGATE...HUGO...
LIMON...MATHESON...FORDER...KARVAL...KUTCH...PUNKIN CENTER...
AKRON...COPE...LAST CHANCE...OTIS
723 AM MDT SAT MAY 9 2015

...FLASH FLOOD WATCH NOW IN EFFECT THROUGH THIS EVENING...

THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR

* PORTIONS OF CENTRAL COLORADO...EAST CENTRAL COLORADO...NORTH
CENTRAL COLORADO AND NORTHEAST COLORADO...INCLUDING THE
FOLLOWING AREAS...IN CENTRAL COLORADO...JEFFERSON AND WEST
DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST
PARK COUNTIES BELOW 9000 FEET. IN EAST CENTRAL COLORADO...
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH
LINCOLN COUNTY AND SOUTHEAST ELBERT COUNTY BELOW 6000
FEET/SOUTH LINCOLN COUNTY. IN NORTH CENTRAL COLORADO...LARIMER
COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY AND LARIMER AND
BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET. IN NORTHEAST
COLORADO...BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST
BROOMFIELD COUNTY...CENTRAL AND EAST ADAMS AND ARAPAHOE
COUNTIES...CENTRAL AND SOUTH WELD COUNTY...ELBERT/CENTRAL AND
EAST DOUGLAS COUNTIES ABOVE 6000 FEET...MORGAN COUNTY...NORTH
DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE
COUNTIES/EAST BROOMFIELD COUNTY...NORTHEAST WELD COUNTY AND
WASHINGTON COUNTY.

* THROUGH THIS EVENING

* SOIL MOISTURE LEVELS ARE VERY HIGH AFTER A WEEK OF COOL AND
RAINY WEATHER. PERIODS OF HEAVY RAIN SHOWERS ARE EXPECTED THIS
MORNING THROUGH THE EVENING AS A STRONG STORM SYSTEM CROSSES
OVER THE STATE. RAIN SHOWERS CAPABLE OF PRODUCING ONE TO TWO
INCHES OF RAIN IN AN HOUR OR LESS WILL CAUSE FLASH FLOODING
PROBLEMS IN THE FRONT RANGE FOOTHILLS AND ACROSS THE NORTHEAST
COLORADO PLAINS.

* STREAMS...CREEKS AND RIVERS ARE ALREADY RUNNING NEAR BANKFULL
LEVELS. RUNOFF FROM RAIN SHOWERS WILL BE RAPID...CAUSING
ADDITIONAL RISES ON RIVERS AND STREAMS. URBAN AREAS WILL ALSO
EXPERIENCE PONDING OF WATER IN LOW-LYING AREAS...INTERSECTIONS
AND UNDERPASSES. IN THE FRONT RANGE FOOTHILLS...HEAVY RAINS
MAY ALSO CAUSE ROCKSLIDES OR MUDSLIDES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

Areas of Jefferson County have been upgraded to a Flood Warning

Flood Warning

FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
1136 AM MDT SAT MAY 9 2015

COC001-005-013-014-031-035-059-069-123-100245-
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LARIMER CO-DOUGLAS CO-ADAMS CO-BOULDER CO-DENVER CO-ARAPAHOE CO-
WELD CO-JEFFERSON CO-BROOMFIELD CO-
1136 AM MDT SAT MAY 9 2015

...A FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM MDT SATURDAY FOR
EASTERN LARIMER...NORTH CENTRAL DOUGLAS...NORTHWESTERN ADAMS...
EASTERN BOULDER...SOUTHWESTERN DENVER...SOUTHWESTERN ARAPAHOE...
WESTERN WELD...JEFFERSON AND BROOMFIELD COUNTIES...

AT 1132 AM MDT...DOPPLER RADAR INDICATED RAIN HAD ENDED OVER MOST OF
THE AREA. HOWEVER ADDITIONAL SHOWERS AND THUNDERSTORMS WILL
REDEVELOP LATER THIS AFTERNOON WITH THE POTENTIAL FOR ADDITIONAL
HEAVY RAIN.

RAINFALL AMOUNTS OF 1 TO 3 INCHES HAVE FALLEN DURING THE PAST 24
HOURS WITH AREAS OF FLOODING STILL OCCURRING IN SOME AREAS.


SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DENVER...FORT COLLINS...GREELEY...LAKEWOOD...THORNTON...ARVADA...
WESTMINSTER...SOUTHWESTERN CENTENNIAL...BOULDER...LONGMONT...
LOVELAND...BROOMFIELD...HIGHLANDS RANCH...WESTERN COMMERCE CITY...
LITTLETON...NORTHGLENN...BRIGHTON...ENGLEWOOD...WHEAT RIDGE AND
LAFAYETTE.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA LATER THIS AFTERNOON INTO THE EARLY EVENING HOURS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ROCK SLIDES AND DEBRIS FLOWS ARE LIKELY FROM THIS RAINFALL. FLOODING
OF CREEKS AND STREAMS...ROADS AND ROADSIDE CULVERTS IS ALSO EXPECTED.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES IN URBAN AREAS.
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

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. MOVE TO HIGHER GROUND.