Maricopa County, Arizona — The National Weather Service in Phoenix has issued a Flash Flood Warning for Maricopa County in south central Arizona and Pinal County in southeastern Arizona, in effect until 11:15 AM MST today, November 1.

What is happening: Thunderstorms are producing heavy rain across the warned area, with between 0.5 and 1.25 inches already measured and another 0.25 to 0.5 inches possible. Flash flooding is underway or about to begin.

Local impacts: Forecasters warn of life-threatening flash flooding from the storms. Roads, washes, and low-lying areas in the warned counties can flood quickly as the rain keeps falling.

What to do:

- Do not drive through flooded roads. Turn around, do not drown. Most flood deaths happen in vehicles.

- Stay away from washes and flooded streets.

- If water is rising around you, get to higher ground immediately.

- Never walk through moving floodwater.

Source: National Weather Service, November 1, 2026.