Hawaii’s governor declared a disaster for two islands on Tuesday after three days of relentless rains caused flooding and a sewage spill on Kauai, where officials were dealing with tree-blocked roads, closed schools and dangerous surf. Gov. Neil Abercrombie’s declaration includes Oahu, where Honolulu is located. A brown water advisory was issued on the island after two manholes overflowed and wastewater flowed into the ocean. There were also warnings of possible hail, lightning, rockslides and water-clogged roads.