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Arizona Monsoon Reactivates; Flood Watches Issued in Northern Counties

NOAA has flagged a slight flood risk for central Arizona as forecasters say a disturbance over Mexico could boost storms late this week.

Overview

  • The monsoon pattern returned to Arizona this week and was active Wednesday, producing showers, thunderstorms, damaging dust and localized heavy rain across the state.
  • Flood Watches are in effect for parts of Coconino, Yavapai and northern Gila counties, covering communities such as Sedona, Prescott, Payson and Oak Creek Canyon.
  • Localized downpours have already produced heavy totals in the Valley, including a 1.38-inch report at Perry Park, and a Category 3 dust event at Phoenix was recorded on ASU’s PHX‑Dust Scale.
  • Short, intense storms can drop 1–2 inches in under an hour, raising flash‑flood danger on burn scars like the Pocket Fire and prompting airport delays and traffic disruptions.
  • Forecasters expect daily storm chances through the week with the highest flood concern Thursday and Friday, and extreme heat warnings remain in effect for parts of southwestern Arizona.