the siren Hawaii residents will hear if a nuclear bomb is on its way. Hawaii has previously been depicted as a target by North Korea. Hawaii is about 4,600 miles from North Korea. The U.S. mainland is 6,680 miles from North Korea. Authorities believe North Korea would attack closer targets, such as South Korea or Japan — or instead aim for the U.S. mainland.
Source: Washington Post November 27, 2017 17:56 UTC