Hawaii floods trigger mass rescue as Oahu dam nears capacity

Hawaii’s Oahu island has been hit by devastating flash floods, prompting mass rescue operations and the evacuation of thousands of residents as officials raised alarms over a potential dam breach following record-breaking rainfall.

Emergency crews rescued more than 230 people after heavy rains triggered what officials described as the worst flooding on the island in two decades. Water levels at a key dam surged from 79 feet (24 meters) to 84 feet (25.6 meters) in under 24 hours, bringing it within just 6 feet (1.8 meters) of capacity. While levels later began to recede, authorities warned that conditions could worsen if additional rain falls.

Governor Josh Green confirmed that no fatalities have been reported and no individuals remain unaccounted for, though approximately 10 people were transported to hospitals with hypothermia. Honolulu Mayor Rick Blangiardi described the damage as “catastrophic,” noting that dozens, and potentially hundreds, of homes have been affected. Around 5,500 residents were placed under evacuation orders as floodwaters swept across the island.

Parts of Oahu received between 8 and 12 inches (20 to 30 centimeters) of rain overnight, with the island’s highest peak recording nearly 16 inches (40 centimeters). Emergency crews conducted both air and water rescues, though operations were complicated by civilian drone activity in the area. Honolulu emergency officials advised those trapped to seek the highest level of their homes and to avoid attics without roof access.

Officials warned that the situation remains precarious, with Governor Green describing the day ahead as “very touch-and-go” as continued rainfall was expected. Most of the state remained under flood watch, with another storm system forecast to bring additional precipitation in the coming days, raising further concerns for already saturated areas and vulnerable infrastructure.