The Big Island of Hawaii is under a hurricane warning as Hurricane Lane nears. The islands of Maui, Lanai, Molokai and Oahu are under a hurricane watch. Lane is a powerful category five hurricane that is expected to swipe the Big Island by Thursday. The storm is expected to weaken a little over the next couple of days, but authorities are warning that it could bring a lot of rainfall, leading to flash flooding and landslides. Hawaii Governor David Ige says he's prepared to activate the National Guard if necessary.