From March 10 to March 24, 2026, Hawaii was struck by two back-to-back Kona low systems, which are deep low-pressure systems that pull tropical moisture into the islands, producing prolonged heavy rain and strong winds. These storms led to historic flooding, with some areas receiving up to 61 inches of rain in localized regions, particularly on Maui, Molokaʻi, and Oʻahu. Honolulu recorded 5.51 inches in a single day, breaking a 75-year-old daily rainfall record

Impact Across the Islands

• Oʻahu: North Shore communities like Waialua and Haleiwa were heavily inundated, prompting evacuations of 5,500 residents. Flash floods and landslides damaged homes, roads, and infrastructure, while the 120-year-old Wahiawa Dam was closely monitored for potential failure.
• Maui: Southwest slopes of Haleakalā received up to 46 inches of rain, causing road collapses, homes swept into rivers, and communities cut off for days.
• Hawaiʻi Island: Rainfall totals reached up to 25 inches, with flooding along highways and residential areas.
• Other islands: Kauaʻi, Molokaʻi, and Lanai also experienced severe flooding, landslides, and infrastructure damage.