610
FNUS75 KFGZ 281953
FWSFGZ
SPOT FORECAST FOR 2026 BRIGHT ANGEL FLASH FLOOD...GNP GRAND CANYON NP
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1253 PM MST MON SEP 28 2026
FORECAST IS BASED ON FORECAST START TIME OF 0700 MST ON SEPTEMBER 29.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE IN FLAGSTAFF, AZ
..FLOOD WATCH IN EFFECT UNTIL 11PM TUESDAY
DISCUSSION
SHOWERS AND ISOLATED THUNDERSTORMS FROM OVERNIGHT WILL GRADUALLY
TREND TOWARD THE EAST, WHILE ADDITIONAL WRAP AROUND MOISTURE KEEPS
ACTIVITY GOING FOR THE AFTERNOON AND EVENING HOURS. OVERALL, THE
GREATEST RISK OF HEAVY RAINFALL IMPACTS STAY TO THE SOUTH AND
EAST OF THE GRAND CANYON. HOWEVER, THERE IS A SLIGHT RISK FOR
FLASH FLOODING THROUGH THE EVENING GIVEN THE WIDESPREAD RAIN
EXPECTED AND THE POTENTIAL FOR A THUNDERSTORM TO BRING HEAVY
RAINFALL RATES OVER SATURATED SOILS. OTHER HAZARDS BESIDES THE
RAIN AND RISK OF FLASH FLOODING INCLUDE FREQUENT LIGHTNING, STRONG
WINDS AND HAIL WITH ANY STRONGER THUNDERSTORM. WINDS WILL
OTHERWISE BE MOSTLY LIGHT BY WEDNESDAY MORNING, THINGS WILL START
TO DRY BACK OUT AND THE PATTERN REMAINS DRY AND RELATIVELY WARM
FOR THE REST OF THE WEEK.
TUESDAY
SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS AND CHANCE OF
THUNDERSTORMS.
CHANCE OF PCPN......90 PERCENT.
MAX TEMPERATURE.....AROUND 70.
MIN HUMIDITY........66 PERCENT.
SURFACE WINDS (MPH).EAST WINDS 5 TO 10 MPH.
TUESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS AND CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN RAIN SHOWERS
LIKELY OVERNIGHT.
CHANCE OF PCPN......90 PERCENT.
MIN TEMPERATURE.....AROUND 56.
MAX HUMIDITY........93 PERCENT.
SURFACE WINDS (MPH).WEST WINDS UP TO 5 MPH.
WEDNESDAY
SKY/WEATHER.........DECREASING CLOUDS. SLIGHT CHANCE OF RAIN SHOWERS
IN THE MORNING.
CHANCE OF PCPN......20 PERCENT.
MAX TEMPERATURE.....AROUND 85.
MIN HUMIDITY........33 PERCENT.
SURFACE WINDS (MPH).NORTHWEST WINDS AROUND 5 MPH.
A WEATHER FORECAST TABLE FOR YOUR SPOT LOCATION IS LINKED.
THE INFORMATION PROVIDED BY THIS SITE IS FOR PLANNING PURPOSES ONLY
AND IS NOT INTENDED TO SUBSTITUTE INFORMATION PROVIDED BY AN OFFICIAL
NATIONAL WEATHER SERVICE SPOT FORECAST.
HTTPS://WEATHER.GOV/DLH/FWD?LAT=36.105&LON=-112.095&CLAT=36.105&CLON=-112.095
FORECASTER...ZANKER
REQUESTED BY...KIMBERLY FURGERSON
TYPE OF REQUEST...SAR
.TAG 2621049.27/FGZ
.DELDT 09/28/26
.FORMATTERVERSION 2.0.0
.EMAIL ERIN_DEMPSEY@NPS.GOV,KIMBERLY_FURGERSON@NPS.GOV
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