Gov. Josh Green said the cost of the storm could top $1 billion, including damage to airports, schools, roads, people's homes and a Maui hospital in Kula.

Officials are still working to assess and address damage from the March 13-16 storm that dropped up to four feet of rain on the island of Maui.

Officials warn some residents could be trapped by rising waters as Wahiawā dam on Oahu ‘may collapse at any time’