My parents are in Maui and said afer the first earthquake when the second (bigger one) happened, they were told to leave and go onto the golf course. Power and phones out/down. They were told just to stay away from water but the authorities were not thinking there was tsunami concern there (at least) on Maui from what they had been told by authorities.
If there had been a tsunami I suspect it would have hit by now.
Was a smart thing to do to stay away from the water, there is the potential for really big landslides off the side of Hawaii.