Flash Flood Warning 35, NWS Denver/Boulder, CO

000 
WGUS75 KBOU 292148
FFSBOU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
341 PM MDT WED AUG 29 2007

COC035-059-292315-
JEFFERSON CO-DOUGLAS CO-
341 PM MDT WED AUG 29 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM MDT FOR
SOUTHWESTERN DOUGLAS AND SOUTHWESTERN JEFFERSON COUNTIES...

AT 341 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM 5 MILES SOUTH OF CHEESMAN
RESERVOIR...OR ABOUT 31 MILES NORTHWEST OF COLORADO SPRINGS. THIS
STORM WAS MOVING SOUTH AT 5 MPH.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WESTCREEK...DECKERS AND CHEESMAN RESERVOIR.

THIS WARNING INCLUDES THE PART OF THE HAYMAN BURN AREA IN DOUGLAS 
AND JEFFERSON COUNTIES. A FLASH FLOOD WARNING IS ALSO IN EFFECT FOR 
THE PARK COUNTY PORTION OF THE BURN AREA UNTIL 530 PM. 

AUTOMATED RAIN GAUGES AND SPOTTER REPORTS INDICATE THAT 1 TO 2.5 
INCHES OF RAIN HAVE FALLEN IN THE HAYMAN BURN AREA SINCE 230 PM.
THE HEAVIEST RAINFALL HAS BEEN IN THE SOUTH PLATTE CANYON FROM 
DECKERS TO SOUTH OF CHEESMAN RESERVOIR...IN THE GOOSE CREEK DRAINAGE 
IN JEFFERSON COUNTY...AND IN THE LOWER TURKEY CREEK DRAINAGE IN 
DOUGLAS COUNTY. SEVERE RUNOFF IS EXPECTED FROM THIS STORM...BUT MOST 
OF THE WATER WILL GO INTO CHEESMAN RESERVOIR. 

THE JEFFERSON COUNTY SHERIFF REPORTED ROAD CLOSURES ON COUNTY ROAD 
126 AND WIGWAM ROAD. THERE WAS DEBRIS FROM SMALL CREEKS ON THE ROADS 
IN THE AREA BELOW CHEESMAN RESERVOIR.

RAINFALL WILL BE DECREASING IN THIS AREA OVER THE NEXT HOUR...WITH 
ADDITIONAL RAINFALL OF LESS THAN HALF AN INCH. HOWEVER...RUNOFF WILL 
CONTINUE TO CAUSE FLASH FLOODING OF CREEKS AND STREAMS...ESPECIALLY 
IN AREAS SOUTH OF CHEESMAN RESERVOIR.

MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO
ESCAPE RISING WATER CLIMB TO HIGHER GROUND.

LAT...LON 3932 10522 3927 10540 3913 10539 3912 10509

$$
GIMMESTAD

000 
WGUS75 KBOU 292249
FFSBOU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
445 PM MDT WED AUG 29 2007

COC035-059-292315-
JEFFERSON CO-DOUGLAS CO-
445 PM MDT WED AUG 29 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM MDT FOR
SOUTHWESTERN DOUGLAS AND SOUTHWESTERN JEFFERSON COUNTIES...

AT 445 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE THUNDERSTORM THAT PRODUCED VERY HEAVY RAIN OVER THE 
CHEESEMAN RESERVOIR AREA HAD WEAKENED AND MOVED SOUTH INTO TELLER 
COUNTY ABOUT 16 MILES SOUTH OF CHEESMAN RESERVOIR. THIS STORM WAS 
MOVING SOUTH AT 10 MPH.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
DECKERS AND CHEESMAN RESERVOIR.

SHOWERS CONTINUE TO PRODUCE RAIN OVER THE BURN AREA...BUT ADDITIONAL 
RAINFALL IS EXPECTED TO BE LESS THAN A QUARTER INCH. EXCESSIVE 
RUNOFF IS LIKELY CONTINUING FROM THIS STORM...MAINLY IN AREAS SOUTH 
OF CHEESMAN RESERVOIR. THE RUNOFF WILL CAUSE FLASH FLOODING OF 
CREEKS AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS 
COULD ALSO TRIGGER ROCK SLIDES OR MUD FLOWS IN STEEP TERRAIN.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

LAT...LON 3932 10522 3927 10540 3913 10539 3912 10519

$$
GIMMESTAD

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DENVER CO
340 AM MDT WED AUG 29 2007

.SHORT TERM...SFC FRONT CONTINUES TO PUSH SOUTHWARD WITH GOOD PUSH
OF LOW LVL MSTR WORKING ITS WAY WESTWARD INTO THE FRONT RANGE.
STRATUS/FOG HAVE DEVELOPED ACROSS MUCH OF ERN CO ATTM AND WILL COVER
ALL OF THE URBAN CORRIDOR BY SUNRISE. THERE HAS EVEN BEEN SOME ISOLD
CONVECTION AND WILL PROBABLY NEED TO ADD SOME LOW POPS EARLY THIS AM
ACROSS SRN FOOTHILLS AND PALMER DIVIDE AS FRONT INTERACTS WITH
HIGHER TERRAIN. BEHIND THE FRONT...AIRMASS WILL REMAIN CAPPED ACROSS
FAR ERN CO AND DONT SEE MUCH OF A CHANCE OF PRECIP THRU TNT.
CHANCES INCREASE FURTHER WEST INTO THE FOOTHILLS...WHERE MSTR AND
CONVERGENCE RESULTING IN THE BEST CHANCE THRU THIS EVENING.  COOLER
TEMPS TODAY...ESP OVER FAR NERN CO WITH READINGS REMAINING IN THE
UPPER 70S UNDER STRONG CAP AT 750MB.  SHOULD SEE A RETURN OF
STRATUS/FOG LATER TNT AND MAY AGAIN MOVE BACK INTO THE URBAN
CORRIDOR WITH DEVELOPMENT OF DEN CYCLONE PUSHING MSTR BACK
SOUTHWARD.

.LONG TERM...THE UPPER RIDGE WILL BE NEAR THE FOUR CORNERS ON
THURSDAY WITH A WEAK WNWLY FLOW ALOFT OVER THE STATE.  A MOIST AMS
WL CONTINUE OVER THE REGION FOR ONE MORE DAY SO THE STORMS THAT TO
DVLP IN THE AFTN COULD STILL PRODUCE HEAVY RAIN...ALTHO THE TSTM
COVERAGE WILL BE MORE ISOLD.  INTERACTIVE SOUNDINGS SHOW THE
STRONGEST SUBSIDENCE OVER THE NERN PLAINS THURSDAY SO TSTMS COULD
GET CAPPED IN THE AFTN/EVNG.  BEST POTENTIAL FOR TSTMS WOULD APPEAR
TO BE OVER SRN AND WRN SECTIONS OF THE CWFA.  LATE THURSDAY INTO
FRIDAY THE RIDGE WILL START TO BUILD WITH A DRIER NLY FLOW DVLPG
OVER NERN CO.  THIS TREND WILL CONTINUE INTO THE WEEKEND.  THE MDLS
DO SHOW THE RIDGE FLATTENING SOMEWHAT AS A SYSTEM MOVES INTO THE NRN
ROCKIES.  THIS DOES LITTLE TO AFFECT THE OVERALL FCST.  THE END
RESULT IS THE SAME...DRIER AND WARMER. AS A RESULT...ANY ADJUSTMENTS
TO THE GRIDS WILL BE MINIMAL.

&&

.AVIATION...LIFR CIG CONDITIONS DEVELOPING ACROSS FRONT RANGE
AIRPORTS AND SHOULD GRADUALLY LIFT AFT 15Z THIS AM AND THEN
REDEVELOP AFT 10Z TNT. ISOLD TSRA POSSIBLE BTWN 22-02Z TODAY.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...NONE.

&&

SENTREKI/COOPER

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DENVER CO
1052 AM MDT WED AUG 29 2007

COZ030>051-301200-
JACKSON COUNTY BELOW 9000 FEET-WEST JACKSON AND WEST GRAND
COUNTIES ABOVE 9000 FEET-GRAND AND SUMMIT COUNTIES BELOW 9000
FEET-SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-SOUTH AND SOUTHEAST
GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/GILPIN/CLEAR CREEK/
SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-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-CENTRAL AND SOUTHEAST PARK COUNTY-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-LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS
COUNTY-
1052 AM MDT WED AUG 29 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL
COLORADO.

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT PUSHED ACROSS THE AREA LAST EVENING RESULTING IN LOTS
OF LOW CLOUDINESS AND COOLER TEMPERATURES ACROSS THE PLAINS THIS
MORNING.  THE CLOUDS HAVE CLEARED QUITE A BIT NEAR THE FOOTHILLS AND
SHOULD GRADUALLY BREAK UP FARTHER EAST...BUT TEMPERATURES WILL
REMAIN TOO COOL TODAY TO PRODUCE THUNDERSTORMS ON THE PLAINS.
HOWEVER...ENOUGH MOISTURE REMAINS AT MID LEVELS WITH ADDITIONAL
MOISTURE PUSHED UP INTO THE FOOTHILLS AND WITH SUNSHINE IN THESE
AREAS SCATTERED THUNDERSTORMS SHOULD DEVELOP THIS AFTERNOON.  WINDS
ALOFT WILL ALLOW SOME STORMS TO MOVE INTO THE URBAN CORRIDOR BUT
PROBABLY NOT MUCH FARTHER TO THE EAST BECAUSE THE AIR WILL REMAIN
TOO STABLE THERE.  HEAVY RAINS AND SMALL HAIL WILL BE POSSIBLE
SHOULD STORMS DEVELOP.  ACTIVITY SHOULD MOSTLY BE OVER BY AROUND
MIDNIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED FOR TODAY OR TONIGHT.

SZOKE/DANKERS