089
FNUS75 KFGZ 202136
FWSFGZ
SPOT FORECAST FOR 2026 BRIGHT ANGEL FLASH FLOOD...NPS
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
236 PM MST SUN SEP 20 2026
FORECAST IS BASED ON FORECAST START TIME OF 0700 MST ON SEPTEMBER 21.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE IN FLAGSTAFF, AZ
DISCUSSION
SHOWERS AND THUNDERSTORMS ARE FORECAST TO RETURN
THROUGH THE PERIOD AS A WEATHER SYSTEM APPROACHES. ISOLATED ACTIVITY
MAY BEGIN AS EARLY AS MONDAY AFTERNOON, THEN INCREASING COVERAGE IS
EXPECTED INTO THE EVENING. CHANCES FOR THUNDERSTORMS CONTINUE ON
TUESDAY AFTERNOON. THE FLOODING THREAT IS EXPECTED TO BE LOWER THAN
LAST WEEK, HOWEVER BRIEF HEAVY RAINFALL IS STILL POSSIBLE THROUGH
THE PERIOD.
MONDAY
SKY/WEATHER.........PARTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS
POSSIBLE BY THE LATE AFTERNOON
CHANCE OF PCPN......20 PERCENT.
MAX TEMPERATURE.....AROUND 94.
MIN HUMIDITY........18 TO 20 PERCENT.
SURFACE WINDS (MPH).SOUTHEAST THROUGH SOUTHWEST WINDS 5 TO 10 MPH
GUSTS TO 15 MPH.
MONDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS.
CHANCE OF PCPN......50 PERCENT.
MIN TEMPERATURE.....AROUND 69.
MAX HUMIDITY........50 TO 60 PERCENT.
SURFACE WINDS (MPH).BECOMING VARIABLE 3 TO 6 MPH.
TUESDAY
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS.
CHANCE OF PCPN......50 PERCENT.
MAX TEMPERATURE.....AROUND 92.
MIN HUMIDITY........22 TO 25 PERCENT.
SURFACE WINDS (MPH).SOUTHWEST WINDS 5 TO 10 MPH GUSTS TO 15 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...LEWANDOWSKI
REQUESTED BY...KIMBERLY FURGERSON
TYPE OF REQUEST...SAR
.TAG 2621049.19/FGZ
.DELDT 09/20/26
.FORMATTERVERSION 2.0.0
.EMAIL KIMBERLY_FURGERSON@NPS.GOV
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