Flash Flood Warning

Flash Flood Warning
AZC005-280100-
/O.NEW.KFGZ.FF.W.0050.250927T2206Z-250928T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Flagstaff AZ
306 PM MST Sat Sep 27 2025

The National Weather Service in Flagstaff has issued a

* Flash Flood Warning for...
  The Havasu Creek basin in...
  Coconino County in north central Arizona...
  This includes the Colorado River between river miles 156 and 158.

* Until 600 PM MST.

* At 306 PM MST, local law enforcement reported flash flooding near
  Supai from heavy rain over the Havasu Creek basin. Up to 0.5
  inches of rain have fallen. Additional rainfall amounts up to 0.25
  inches are possible in the warned area. Flash flooding is already
  occurring.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding in and around the Havasu
           Creek basin.

  SOURCE...Law enforcement reported.

  IMPACT...Life threatening flash flooding of areas in and around
           the Havasu Creek basin.

* Some locations that will experience flash flooding include...
  Grand Canyon National Park, Little Navajo Falls, Mooney Falls,
  Beaver Falls, Hualapai Hilltop, Supai and Havasupai Reservation.

This includes the Colorado River between river miles 156 and 158.

This includes the following swimming holes...
All swimming holes on Havasu Creek near Supai.

This includes the following creeks, washes and rivers...
  Heather Wash, Colorado River, Pasture Wash, Havasu Creek, Black
  Tank Wash and Little Coyote Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Campers and hikers should hustle to higher ground immediately! Stay
away from creeks and washes!

Foot bridges will be washed out in Supai Campground. Some campsites
will be flooded. Campers may be stranded in portions of the
campground.

&&

LAT...LON 3628 11268 3616 11259 3608 11256 3604 11251
      3601 11256 3604 11262 3611 11263 3620 11269
      3615 11271 3611 11271 3612 11275 3620 11278
      3627 11278 3630 11279 3630 11277 3631 11276
      3632 11276 3633 11275 3631 11273

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

Humphreys

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Grand Junction CO
351 AM MDT Sat Sep 27 2025

COZ001>014-017>023-UTZ022>025-027>029-281000-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
351 AM MDT Sat Sep 27 2025

This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.

.DAY ONE...Today and tonight.

Thunderstorm development will be possible today and tonight across
all but far northern portions of western Colorado. Moderate to heavy
rainfall rates...small hail...lightning and gusty wind will all be
threats.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Thunderstorm development will be more widespread on Sunday. The
threat of heavy rainfall and excess runoff will be possible with some
of these storms. High mountain snow accumulation is also possible
with little to no impact to travel.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$