Flash Flood Warning Issued for Coconino County, AZ (Sep 1, 2026)
This alert is no longer in effect.
NOAA issued it on September 1, 2026, 13 days ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Flagstaff has issued a Flash Flood Warning for the Paria River in Coconino County, Arizona, in effect until 5:15 AM MST September 1 due to a rapid 4-foot river rise from heavy rain.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Coconino County, Arizona
- Issued
- September 1, 2026
- Issuing authority
- NWS Flagstaff AZ
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 13 days ago; use the issuing agency's live warning service for current conditions in Coconino County, Arizona.
Alert Details
Flash Flood Warning issued by NWS Flagstaff AZ. Effective from August 31 at 10:26 PM MST until September 1 at 5:15 AM MST. Severity: Severe. Certainty: Likely. Urgency: Immediate.
Affected Areas
Coconino County in north central Arizona, including the Paria River, Paria Canyon, Paria River Slot Canyon, and Vermilion Cliffs National Monument.
What You Should Do
Get out of the Paria River slot canyon. Avoid flooded areas. Do not attempt to travel unless fleeing an area subject to flooding.
Expected Conditions
At 10:26 PM MST, a river gauge on the Paria River reported a rapid rise of about 4 feet from thunderstorms producing heavy rain. Up to 2 inches of rain have fallen. Life threatening flash flooding is ongoing or expected.
Timeline
Alert effective August 31 at 10:26 PM MST through September 1 at 5:15 AM MST. Flood waters expected to reach near the confluence with the Colorado River at Lees Ferry by 6 AM.
Original source: NOAA Official Notice ↗
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