Live incident briefing · Flood

Flash Flood Warning near Coconino, AZ

Official warning geography and instructions, rainfall outlook, gauge observations and forecasts, affected places, and source history.

Official source updated
20 hr ago
Briefing status
Active

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Official information and local resources

Flooding of washes and creeks will occur, some dirt roads will become muddy and impassable. Paved roads and underpasses could become flooded as well.

NWS Flagstaff AZ · source Aug 29, 2026, 11:21 PM

In immediate danger? Call 911. Nature Says When is not an emergency service and does not determine whether an area is safe.

Verified context

What the latest evidence says

The Flash Flood Warning for Coconino, AZ is classified as Severe with Immediate urgency. This record includes 1 warnings warning and 142,481 people represented people.

From the primary source

Official incident details

Displayed directly from the issuing authority, with no generated paraphrase.

At 421 PM MST, local law enforcement reported thunderstorms producing heavy rain and flash flooding across the warned area. Between 0.75 and 1.25 inches of rain in 30 minutes was estimated by radar earlier. HAZARD...Life threatening flash flooding. SOURCE...Law enforcement reported. IMPACT...Life threatening flash flooding of creeks and streams and normally dry washes. Some locations that will experience flash flooding include... Pima Point, Hermit's Rest, Monument Creek Vista, Hopi Point, Maricopa Point, South Rim Visitors Center, Pipe Creek Resthouse, Pipe Creek Vista, Yaki Point, Grand Canyon Village, Plateau Point, South Rim, Devil?s Corkscrew and Skeleton Point. This includes the Colorado River between river miles 85 and 87...and between river miles 90 and 98. This includes the following recreation areas and campgrounds... Havasupai Gardens Campground, Mather Campground, Clear Creek Camp Site, Below Clear Creek Camp Site, Zoroaster Camp Site, Above Cremation Camp Site, Below Pipe Creek Camp Site, 91 Mile Creek Camp Site, Trinity Creek Camp Site, Above Salt Creek Camp Site, Salt Creek Camp Site, Granite Camp Site, Lower Granite Camp Site, 94 Mile Canyon Camp Site, Hermit Camp Site, Old Dune Camp Site, Bull Schist Camp Site, Schist Camp Site, Upper Boucher Camp Site, Boucher Camp Site and Pipe Creek Rest Area. This includes the following creeks, washes and rivers... Bright Angel Creek, Colorado River, 91- Mile Creek, Zoroaster Canyon, Heather Wash, Sapphire Canyon, Slate Creek, Clear Creek, Travertine Canyon, Monument Creek, Cremation Creek, Coconino Wash, Pipe Creek, Boucher Creek, Agate Canyon, 94- Mile Creek, Ninetyone Mile Creek, Crystal Creek, Trinity Creek, Lonetree Canyon, Hermit Creek, Horn Creek, Bright Angel Wash, Salt Creek and Garden Creek.

NWS Flagstaff AZ · source Aug 29, 2026, 11:21 PM

Official forecast

NWS weather context

Chance Showers And Thunderstorms96°F · wind 14 mph · gusts 26 mph8/29/2026, 10:00:00 PM
Chance Showers And Thunderstorms93°F · wind 12 mph · gusts 22 mph8/29/2026, 11:00:00 PM
Chance Showers And Thunderstorms90°F · wind 10 mph · gusts 18 mph8/30/2026, 12:00:00 AM
Chance Showers And Thunderstorms85°F · wind 10 mph · gusts 16 mph8/30/2026, 1:00:00 AM
Chance Showers And Thunderstorms82°F · wind 7 mph · gusts 13 mph8/30/2026, 2:00:00 AM
Partly Cloudy81°F · wind 7 mph · gusts 12 mph8/30/2026, 3:00:00 AM

Official gauge and corroborating observation

River and flood-stage context

Bright Angel Creek near Grand CanyonObserved stage 11.875.4 miles from the stored warning center; proximity does not establish flood cause or impact.

Source-timed facts

Current incident picture

Values stay attached to the authority and time that supplied them.

Affected areas
Coconino, AZ
National Weather Service · source Aug 29, 2026, 11:21 PM
County count
1 counties
National Weather Service · source Aug 29, 2026, 11:21 PM
Official alert
Flash Flood Warning
National Weather Service · source Aug 29, 2026, 11:21 PM
Severity
Severe
National Weather Service · source Aug 29, 2026, 11:21 PM
Ugc county codes
AZC005
National Weather Service · source Aug 29, 2026, 11:21 PM
Urgency
Immediate
National Weather Service · source Aug 29, 2026, 11:21 PM
Warning count
1 warnings
National Weather Service · source Aug 29, 2026, 11:21 PM
Represented population
142,481 people
U.S. Census Bureau 2020 Decennial Census · source Apr 1, 2020, 12:00 AM

Geographic context

Incident area and nearby places

Map geometry shows the official source shape when available. It does not predict impact outside or inside the line.

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Map-equivalent affected-area text

Coconino, AZ

Source center: 36.088, -112.189. A point or perimeter is context, not a safety boundary.

  • Coconino, AZ

Material revisions

What changed

Only stored fact changes enter this timeline.

  1. Official source facts changed.

  2. Official source facts changed.

  3. Incident first observed.

Provenance and handoffs

Official sources

Open the authority’s page before making an emergency decision.

How this briefing is assembled

Source facts are stored with source and retrieval times. The page renders stored records only. Optional generated context is omitted whenever validation fails and never controls emergency instructions, containment, road status, health guidance, or publication.