Flash Flood Watch Issued for Tucson Amid Heavy Rainfall
Flash Flood Watch Issued for Tucson Amid Heavy Rainfall
US · Published Sep 17, 2026
• A weather system moving in from northern Mexico is bringing widespread showers and thunderstorms to Tucson, Arizona. The National Weather Service has issued a Flash Flood Watch, effective until 11 pm on 16 September
• Rainfall is expected to be heavy, with a 90% chance of precipitation during the day and 80% at night. High temperatures are below normal, reaching 87°F (30.5°C) today and 89°F (31.6°C) on Thursday. Drier conditions are forecast to return by Friday, with temperatures normalising over the weekend.

Impact & Risks

The heavy rainfall increases the risk of flash flooding, particularly in low-lying areas and regions with poor drainage. Motorists and residents in flood-prone zones should exercise caution. The Flash Flood Watch indicates the potential for rapid water accumulation, which could disrupt travel and pose safety hazards.

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