The Hawaiian Islands face a high threat from Potential Tropical Cyclone One-C, with impacts including strong winds, heavy rain, elevated tides, and dangerous surf conditions. Windward slopes are likely to experience the heaviest rainfall, while coastal areas may see wave heights exceeding 30 feet, posing risks to beachgoers and marine activities. Elevated tides, influenced by trade winds, lunar positioning, and warm ocean temperatures, could exacerbate flooding risks. Residents in vulnerable housing should prepare for potential evacuation, and local officials are closely monitoring the situation to ensure public safety.