Key facts
- Alert
- Flash Flood Warning (severe)
- Issued by
- National Weather Service, Flagstaff AZ
- Areas
- Coconino, AZ; Yavapai, AZ
- Places
- Lake Montezuma, Rimrock, Montezuma Castle National Monument, McGuireville, Montezuma Well, Lawrence Crossing, Crane Petroglyph Heritage Site, Bell Crossing/The Crack, Wet Beaver Wilderness
- In effect
- until 11:15 AM MST, Nov 1, 2026
- Damage threat
- Considerable
- Detection
- Radar indicated
What the National Weather Service says
“Life threatening flash flooding. Heavy rain producing flash flooding.”
NWS Flagstaff AZ, Flash Flood Warning, 8:20 AM MST Nov 1, 2026 · official alert
“Be aware of your surroundings and do not drive on flooded roads.”
NWS Flagstaff AZ, Flash Flood Warning, 8:20 AM MST Nov 1, 2026 · official alert
“Do not attempt to cross flooded roads. Find an alternate route.”
NWS Flagstaff AZ, Flash Flood Warning, 8:20 AM MST Nov 1, 2026 · official alert
What to do
If you are in or near the warned area, move to higher ground now. Stay away from creeks, streams, normally dry washes and low spots.
Do not drive on flooded roads or around barricades. Low water crossings can become dangerous in heavy rain, so find another route.
The warning includes Interstate 17 between mile markers 291 and 293, plus the Wet Beaver Creek Campground and the Wet Beaver Creek Day Use Area and Bell Crossing "The Crack" swimming holes. Avoid these areas while the warning is in effect.
National Weather Service guidance says just 6 inches of moving water can knock you down, and 1 foot of moving water can sweep a vehicle away. Some dirt roads may become muddy and impassable.
Context
The National Weather Service rated the damage threat as considerable. Wet Beaver Creek near Rimrock was at 11.32 feet at 7:45 AM, above its flood stage of 9.5 feet.
FEMA flood-insurance records show 300 claims in Coconino County and 470 in Yavapai County between 1978 and 2026. These counts cover only insured properties, so they understate total flood losses. Both counties were part of the 2010 severe winter storms and flooding declaration, and Coconino County also had a 2021 flood declaration.
Updates
- NWS Flagstaff AZ issued the flash flood warning until 11:15 AM MST.
History here
Coconino County: 300 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.
Coconino County: recent federal disaster declarations
- DR-4620 (2021): severe storms and flooding
- DR-1940 (2010): severe storms and flooding
- DR-1888 (2010): severe winter storms and flooding
Yavapai County: 470 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.
Yavapai County: recent federal disaster declarations
- DR-1888 (2010): severe winter storms and flooding
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Questions
- Is there a flash flood warning in Coconino and Yavapai counties, Arizona?
- Yes. The National Weather Service in Flagstaff issued a Flash Flood Warning for parts of both counties at 8:20 AM MST. It runs until 11:15 AM MST on Sunday, November 1, 2026.
- Which places are affected by this flash flood warning?
- The warning names Lake Montezuma, Rimrock, Montezuma Castle National Monument, McGuireville, Montezuma Well, Lawrence Crossing, Crane Petroglyph Heritage Site, Bell Crossing/The Crack and Wet Beaver Wilderness. It also includes Interstate 17 between mile markers 291 and 293.
- How much rain has fallen in the warned area?
- At 8:20 AM MST, Doppler radar indicated between 1.25 and 2.5 inches of rain had fallen. The National Weather Service said flash flooding was ongoing or expected to begin shortly.
Sources
- NWS Flagstaff AZ: Flash Flood Warning, Nov 1, 2026 weather.gov
- FEMA OpenFEMA: NFIP claims and disaster declarations fema.gov
How this page is made. The Herebeat Hazard Desk builds event pages from official U.S. government data (National Weather Service, USGS, FEMA). The text is written with AI from that data; every number and quote is checked against the official source automatically before publishing, and the page is updated when the agency updates the event. The official source is always the reference. Spotted a mistake? info@herebeat.app. About the Hazard Desk.