428
WGUS55 KGJT 131850
FFWGJT
COC077-132145-
/O.NEW.KGJT.FF.W.0092.260813T1850Z-260813T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1250 PM MDT THU AUG 13 2026
THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN MESA COUNTY IN WEST CENTRAL COLORADO...
* UNTIL 345 PM MDT.
* AT 1250 PM MDT, DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN IN JOHN BROWN CANYON. BETWEEN 0.5 AND 1 INCH OF RAIN HAS
FALLEN. THE EXPECTED RAINFALL RATE IS 1 TO 2 INCHES IN 1 HOUR.
FLASH FLOODING IS ONGOING OR EXPECTED TO BEGIN SHORTLY.
HAZARD...LIFE THREATENING FLASH FLOODING. THUNDERSTORMS PRODUCING
FLASH FLOODING.
SOURCE...RADAR INDICATED.
IMPACT...FLASH FLOODING OF CREEKS AND STREAMS, HIGHWAYS, COUNTY
ROADS AND UNDERPASSES/CULVERTS.
* SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
MAINLY RURAL AREAS OF SOUTHWESTERN MESA COUNTY, WEST OF GATEWAY,
INCLUDING JOHN BROWN CANYON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND, DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
REMAIN ALERT FOR FLOODING EVEN IN LOCATIONS NOT RECEIVING RAIN.
ARROYOS, STREAMS, AND RIVERS CAN BECOME RAGING CURRENTS IN A MATTER
OF MINUTES, EVEN FROM DISTANT RAINFALL.
IMMEDIATELY CLIMB TO HIGHER GROUND. RUNOFF CONCENTRATED THROUGH
NARROW CANYON WALLS CAN QUICKLY BECOME DANGEROUS, LIFE THREATENING
CONDITIONS.
LAT...LON 3868 10898 3866 10903 3862 10906 3859 10904
3865 10897 3868 10897
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
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