Overview

• Forecasters expect a surge of moisture to bring several days of rain chances from Thursday, Oct. 9 through Tuesday, Oct. 14, with the highest odds for widespread, heavier rain on Friday and Saturday.
• NWS Phoenix says atmospheric moisture could reach about 200% of normal with some guidance pointing to 1–2 inches or more in spots, while emphasizing substantial uncertainty in exact amounts.
• NWS Flagstaff highlights an increasing potential for heavy rainfall and localized flooding across northern Arizona, especially Friday into Saturday.
• Central and eastern Arizona also face elevated flooding concerns in washes, creeks, and low-lying areas if slow-moving or repeated storms develop.
• After highs in the 90s near 100 through midweek, temperatures are forecast to drop into the 80s this weekend as clouds and rain increase, and officials urge residents to monitor updates given past October remnant floods such as 1983’s Octave.