Axial Seamount is a shield volcano, similar to Mauna Loa, the world's most active volcano located in Hawaii. Shield volcanoes typically produce runny lava flows that result in gentle slopes.

Windward Oahu is under a flood advisory through 11:45 p.m., the National Weather Service said. “At 8:35 p.m., radar indicated heavy showers and thunderstorms over the northern half of the Koolau ...