Hawaii is bracing for another Kona Storm, forecasted to bring significant rainfall and potential flooding across Oahu, Maui, and the Big Island, starting March 19, 2026. While not expected to be as intense as previous storms, the National Weather Service in Honolulu warns of substantial localized impacts. Kona lows, unique to the leeward side of the Hawaiian archipelago, draw moisture from the tropical Pacific, leading to prolonged heavy rain, strong winds, and thunderstorms.