Kona low triggers life-threatening flooding on Oʻahu’s North Shore, Hawaii

Life-threatening flash flooding struck Oʻahu’s North Shore, Hawaii, on March 20, 2026, after a slow-moving Kona low produced more than 330 mm (13 inches) of rain in parts of northern Oʻahu in about 12 hours from the evening of March 19 into the morning of March 20. Flooding in the Haleiwa and Waialua areas cut off road access, prompted evacuation orders, and triggered emergency response operations. Source