Flood Watch
Flood Watch issued August 29 at 10:19PM MST until September 1 at 12:00AM MST by NWS Flagstaff AZ
Affected area: Kaibab Plateau; Marble and Glen Canyons; Grand Canyon Country; Coconino Plateau; Northeast Plateaus and Mesas Hwy 264 Northward; Chinle Valley; Chuska Mountains and Defiance Plateau; Little Colorado River Valley in Coconino County; Little Colorado River Valley in Navajo County; Little Colorado River Valley in Apache County; Western Mogollon Rim; Eastern Mogollon Rim; White Mountains; Black Mesa Area; Northeast Plateaus and Mesas South of Hwy 264
Effective: Aug 29, 2026 10:19 PM GMT-0700
Expires: Sep 1, 2026 12:00 AM GMT-0700
Alert details
* WHAT…Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE…Apache, Coconino, Navajo, Yavapai and northern Gila
counties.
* WHEN…From Sunday afternoon through Monday evening.
* IMPACTS…Flash flooding will be possible in creeks, normally dry
washes, swimming holes, and over recently burned areas. Raging
killer currents will be possible in side canyons and narrow slot
canyons. Low-water crossings may be flooded.
* ADDITIONAL DETAILS…
– Numerous to widespread showers and thunderstorms are expected
across much of central and northern Arizona on Sunday and Monday,
including the overnight hours Sunday night. These storms will
have the potential to produce heavy rainfall, which could lead to
flash flooding.
– Additional information is available at weather.gov/flagstaff.
Safety information
Have a way to receive Flash Flood Warnings and be prepared to take
action should warnings be issued.
Consider changing your plans if you were going to hike, boat, or
paddleboard to a slot canyon or normally dry wash. If you do still
decide to recreate, check in at a nearby visitor center or ranger
station.
Source: NWS Flagstaff AZ
View the official National Weather Service alert
This post is automatically updated from official National Weather Service alert data.
