Flash Flood Warning Issued for Maricopa County, AZ (Aug 31, 2026, 4:16 AM UTC)
This alert is no longer in effect.
NOAA issued it on August 31, 2026, 3 weeks 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 Phoenix has issued a Flash Flood Warning for Maricopa County in south central Arizona until 1:15 AM MST due to thunderstorms producing heavy rain and life-threatening flash flooding.
This weather record, quickly
- Record type
- Flash Flood Warning
- Affected area
- Maricopa County, Arizona
- Issued
- August 31, 2026
- Issuing authority
- NWS Phoenix 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 3 weeks ago; use the issuing agency's live warning service for current conditions in Maricopa County, Arizona.
Alert Details
A Flash Flood Warning has been issued by the National Weather Service in Phoenix AZ. The alert is effective from August 30 at 9:16 PM MST until August 31 at 1:15 AM MST.
Affected Areas
Maricopa County in south central Arizona, mainly rural areas. This includes streams and drainages such as Powerline Wash, Beer Bottle Wash, Winters Wash, Daggs Wash, Jackrabbit Wash, Hassayampa River, Red Cloud Wash, Star Wash, Mill Wash, Fourmile Wash, Jimmie Wash and Coyote Wash.
What You Should Do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Report observed flooding to local emergency services or law enforcement.
Expected Conditions
Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1.25 and 1.75 inches of rain have fallen, with additional rainfall amounts up to 1 inch possible. Flash flooding is ongoing or expected to begin shortly.
Timeline
The warning is in effect from 9:16 PM MST on August 30, 2026, until 1:15 AM MST on August 31, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Comparable nationwide notices (length or severity timing) 8
Two cross-category peer sets, both computed from Areazine's own archive: notices with a similar body length, and notices near the same severity and agency date. These are drawn from other categories, not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,061 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 31, 2026.
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