Flash Flood Warning issued September 22 at 6:04PM MST until September 22 at 9:00PM MST by NWS Flagstaff AZ The National Weather Service in Flagstaff AZ has issued a Flash Flood Warning for Navajo, AZ until 9:00 PM MST. This is a live snapshot as of 6:17 PM PDT. Conditions change fast — always verify with the National Weather Service for your specific county or ZIP code.
For restoration teams, a flash flood warning is the interior water-intrusion call window: saturated drywall and insulation, flooded basements and crawl spaces, sewer backups in low-lying neighborhoods, and vehicles ruined in submerged underpasses — the exact jobs mitigation crews see most.
Navajo, AZ — Flash Flood Warning
Issuing office: NWS Flagstaff AZ. Issued: 6:04 PM MST. Expires: 9:00 PM MST.
FFWFGZ
The National Weather Service in Flagstaff has issued a
* Flash Flood Warning for…
Navajo County in north central Arizona…
* Until 900 PM MST /1000 PM MDT/.
* At 604 PM MST /704 PM MDT/, Doppler radar indicated thunderstorms
producing heavy rain across the warned area, southeast of Indian
Wells. Between 0.75 and 1.5 inches of rain have fallen. Additional
rainfall amounts of 0.75 to 1.5 inches are possible in the warned
area. Flash flooding is ongoing or expected to begin shortly.
HAZARD…Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE…Radar indicated.
IMPACT…Life threatening flash flooding of creeks and streams,
normally dry washes, urban areas, highways, streets and
underpasses.
* Some locations that will experience flash flooding include…
Twin Buttes.
This includes the following creeks, washes and rivers…
Pueblo Colorado Wash, Steamboat Wash, Bidahochi Wash and Leroux
Wash.
Named locations in the warning path: Twin Buttes.
Source: the NWS active alert for this warning.
Stay safe tonight
Turn around, don’t drown. Most flood deaths occur in vehicles — never drive through flooded roadways or around barricades. Six inches of moving water can knock an adult down; a foot can sweep a car away.
If water enters your home: stay out of standing water where electricity may be present, avoid the basement until the water recedes and the power is confirmed off, and photograph everything before cleanup begins — documentation matters for insurance. Then call a local restoration contractor. Water left sitting starts a second wave of damage (mold, swelling, odor) within a day.
NWS instruction: Flooding of washes and creeks will occur, some dirt roads will become muddy and impassable. Paved roads and underpasses could become flooded as well. Be aware of your surroundings and do not drive on flooded roads. Low water crossings will become dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route.
What this means for restoration teams
Flash flood warnings translate into a predictable damage profile: interior water intrusion at doorways and foundation walls, saturated drywall and insulation requiring flood cuts, flooring loss, sewage backup in low-lying areas, and soaked vehicles and outbuildings. Mold risk starts at 24–48 hours on wet porous materials.
The play: stage equipment now — air movers, dehumidifiers, extraction units — pre-position drying assets near the warned corridor, and keep an on-call rotation through the morning. Capture the address, the water source (clean rainwater vs. contaminated floodwater), and every affected room on the first call; it determines the mitigation category and the estimate.
Field discipline: photo-document before mitigation starts, moisture-map every affected room (not just the visibly wet ones), and keep the homeowner’s payment responsibility clear in writing before work begins. Floodwater is almost always Category 3 — treat it as contaminated and do not let homeowners wade through it to “save” belongings.
FEMA & federal assistance
FEMA Helpline 1-800-621-3362 (7 a.m.–10 p.m. local, 7 days). DisasterAssistance.gov, the FEMA app, and fema.gov/drc for recovery centers. Basic eligibility: citizenship or qualified status, identity verification, proof of occupancy or ownership, and unmet needs not covered by insurance. Apply as soon as it is safe to do so.
Looking ahead
When this warning expires at 9:00 PM MST, the danger does not necessarily end. Flooded creeks can crest after the heaviest rain has passed, downed lines and weakened trees keep roads dangerous, and additional storm rounds may follow. Watch for updated NWS alerts before heading out.
Demand window note: damage-discovery calls typically start within hours and keep coming for days as people find what the storm left behind — wicking drywall, buckling floors, and musty odors appearing 24–72 hours later. Restoration teams should expect the intake line to stay busy well past the warning’s expiration.
Sources & how to verify
- NWS active alert for this warning
- National Weather Service in Flagstaff AZ office page
- Check weather.gov for your county or ZIP code.
This post is for informational purposes and is not an official weather warning. Always follow instructions from local authorities and the National Weather Service.
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