414
WGUS85 KBOU 202225
FLSBOU
FLOOD ADVISORY
NATIONAL WEATHER SERVICE DENVER CO
425 PM MDT MON JUL 20 2026
COC019-049-117-210130-
/O.NEW.KBOU.FA.Y.0026.260720T2225Z-260721T0130Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLEAR CREEK CO-GRAND CO-SUMMIT CO-
425 PM MDT MON JUL 20 2026
..FLOOD ADVISORY IN EFFECT UNTIL 730 PM MDT THIS EVENING
* WHAT...SMALL STREAM FLOODING CAUSED BY EXCESSIVE RAINFALL IS
EXPECTED.
* WHERE...NORTHWESTERN CLEAR CREEK COUNTY IN CENTRAL COLORADO...
CENTRAL SUMMIT COUNTY IN CENTRAL COLORADO...
SOUTH CENTRAL GRAND COUNTY IN NORTH CENTRAL COLORADO...
* WHEN...UNTIL 730 PM MDT.
* IMPACTS...MINOR FLOODING IN LOW-LYING AND POOR DRAINAGE AREAS.
RISES IN SMALL STREAMS AND NORMALLY DRY CREEKS.
* ADDITIONAL DETAILS...
- AT 425 PM MDT, DOPPLER RADAR AND AUTOMATED RAIN GAUGES
INDICATED HEAVY RAIN DUE TO THUNDERSTORMS. THIS MAY CAUSE SMALL
STREAM FLOODING. BETWEEN 1 AND 2 INCHES OF RAIN HAVE FALLEN.
- SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SILVERTHORNE, BERTHOUD FALLS AND BERTHOUD PASS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND, DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.
LAT...LON 3970 10627 3971 10628 3988 10600 3980 10577
3972 10578 3969 10593 3963 10607 3957 10613
3954 10614 3957 10621 3961 10620 3960 10619
3961 10618 3965 10618
09
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