Flash flood · Arizona

Flash Flood Warning for Phoenix and Maricopa County, AZ

The National Weather Service in Phoenix issued a Flash Flood Warning for Maricopa County, Arizona, until 10:45 PM MST. Local law enforcement reported multiple water rescues, and 0.75 to 2.25 inches of rain have fallen.

Key facts

Alert
Flash Flood Warning (severe)
Issued by
National Weather Service, Phoenix AZ
Areas
Maricopa, AZ
Places
Phoenix, Paradise Valley, Piestewa Peak Park, Camelback Mountain, Arizona State Fairgrounds
In effect
until 10:45 PM MST, Oct 30, 2026
Damage threat
Considerable
Detection
Observed
The red outline is the area the National Weather Service put under the flash flood warning. Source: NWS alert polygon. Not to scale with roads.
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What the National Weather Service says

“Turn around, don't drown when encountering flooded roads.”

NWS Phoenix AZ, Flash Flood Warning, 9:10 PM MST Oct 30, 2026 · official alert

“Most flood deaths occur in vehicles.”

NWS Phoenix AZ, Flash Flood Warning, 9:10 PM MST Oct 30, 2026 · official alert

“Be especially cautious at night when it is harder to recognize the dangers of flooding.”

NWS Phoenix AZ, Flash Flood Warning, 9:10 PM MST Oct 30, 2026 · official alert

What to do

Do not drive into flooded roads. The National Weather Service says to turn around, don't drown. Most flood deaths occur in vehicles.

Be extra careful at night, when it is harder to see flood dangers. Stay aware of your surroundings and never drive around barricades.

If you can, move to higher ground. Just 6 inches of moving water can knock you down, and 1 foot of moving water can sweep a vehicle away.

Stay away from creeks, streams, underpasses and low-lying streets while the warning is in effect.

Context

Maricopa County has 2643 flood insurance claims on record from 1978 to 2026, as of 2026-09-09. That count covers only homes with flood insurance, so it understates total flood losses.

FEMA has made one past flood disaster declaration for the county that appears in this record: number 4203, for severe storms and flooding, dated 2014-11-05.

Updates

  1. The National Weather Service updated the flash flood warning; it remains in effect until 10:45 PM MST.
  2. NWS Phoenix AZ issued the flash flood warning until 10:45 PM MST.

History here

Maricopa County: 2643 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.

Maricopa County: recent federal disaster declarations

  • DR-4203 (2014): severe storms and flooding
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Questions

Is there a flash flood warning in Phoenix, Arizona right now?
Yes. The National Weather Service in Phoenix issued a Flash Flood Warning for Maricopa County at 7:50 PM MST on Friday, October 30, 2026. It lasts until 10:45 PM MST.
How much rain has fallen in the warned area?
Between 0.75 and 2.25 inches of rain have fallen. Another 0.25 to 1 inch is possible in the warned area.
Which places are expected to see flash flooding?
The warning names Phoenix, Paradise Valley, Piestewa Peak Park, Camelback Mountain and Arizona State Fairgrounds. Local law enforcement reported multiple water rescues within the warned area.

Sources

  1. NWS Phoenix AZ: Flash Flood Warning, Oct 30, 2026 weather.gov
  2. FEMA OpenFEMA: NFIP claims and disaster declarations fema.gov

How this page is made. The Herebeat Hazard Desk builds event pages from official U.S. government data (National Weather Service, USGS, FEMA). The text is written with AI from that data; every number and quote is checked against the official source automatically before publishing, and the page is updated when the agency updates the event. The official source is always the reference. Spotted a mistake? info@herebeat.app. About the Hazard Desk.