Arizona Hit by Record Rainfall During Sept. 16 Storms
Arizona experienced the highest rainfall in the mainland United States during the monsoon storms on September 16, 2026. The state saw an extraordinary 969 billion gallons of rain, with heavy downpours affecting areas such as Gilbert, Mesa, and Phoenix. The storms brought intense lightning, thunder, and flash flooding, causing significant disruptions. In Tucson, the fire department conducted three swift-water rescues in a single night due to the hazardous conditions. The monsoon season, influenced by El Niño, has set new records for rainfall in Arizona, highlighting the intensity of this year's weather patterns.