A surge of tropical moisture is expected to bring significant rainfall to Hawaii over the coming days, impacting islands throughout the region. Hawaii Public Radio reports that the weather system, originating from the south, is carrying substantial moisture, leading to increased precipitation. The National Weather Service has issued a flood watch for parts of the islands, cautioning residents about potential flash flooding due to the expected heavy rain. Both urban and rural areas are likely to be affected, with potential road closures and disruptions to daily activities. Meteorologists are closely monitoring the situation as the moisture moves through the area, anticipating considerable rainfall totals.