Flash Flood Warning Issued for Maricopa County, AZ
This alert is no longer in effect.
NOAA issued it on August 13, 2026, 10 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 Phoenix has issued a Flash Flood Warning for Maricopa County until 12:30 AM MST due to ongoing life-threatening flooding.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Maricopa County, Arizona
- Issued
- August 13, 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 10 days ago; use the issuing agency's live warning service for current conditions in Maricopa County, Arizona.
Alert Details
Flash Flood Warning issued by NWS Phoenix AZ. Effective from August 12 at 9:38 PM MST until August 13 at 12:30 AM MST. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
Maricopa County in south central Arizona. Specific locations include Buckeye and Painted Rock Dam. Low water crossings downstream of Rainbow Wash along Old US 80 and Patterson Road.
What You Should Do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding.
Expected Conditions
At 9:38 PM MST, Doppler radar and automated rain gauges indicated between 0.5 and 1.5 inches of rain have fallen. A Maricopa County Flood Control District streamflow gauge reached alarm stage at Rainbow Wash. Additional rainfall amounts up to 0.25 inches are possible. Flash flooding is ongoing or expected to begin shortly. Hazard: Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses.
Timeline
Alert effective August 12, 2026 at 9:38 PM MST. Expires and ends August 13, 2026 at 12:30 AM MST.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,170 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 13, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.