Heavy rain and flash floods have struck Hawaii, with the dam on Oahu at risk of imminent collapse. Authorities have issued urgent evacuation orders, while some residents remain trapped in floodwaters.
On 21 March 2026, a crisis unfolded in the U.S. state of Hawaii after continuous heavy rain caused severe flash flooding and put the Wahiawa Dam on Oahu at risk of collapse. Officials warned that the dam is experiencing high overflow rates over its spillway and could fail at any moment, prompting urgent evacuation orders for downstream residents.
Honolulu authorities declared a state of emergency early on 21 March, ordering immediate evacuations across Waiālua and Haleiwa areas along the island’s northern coast. At least 4,000 residents remain in the danger zone, with many unable to evacuate due to flooded roads, submerged vehicles, and limited rescue access.
Officials advise those trapped in floodwaters to move to the highest possible locations and avoid staying in attic spaces without roof access. They also warned that additional rainfall expected over the weekend could worsen the situation and urged residents to closely follow official updates.
Source: AFP