A flash flood watch remains in effect until late tonight for most of the state, according to the National Weather Service in Honolulu.

A damp weather system is expected to hover over the islands through the weekend, and Oahu, Maui, Kauai, Molokai, Lanai, Kahoolawe and Niihau were under flash flood watch as of 4 p.m. today. An earlier flash flood watch that included Hawaii island expired.

The National Weather Service said showers and localized heavy rain will continue through Sunday as tropical moisture interacts with a frontal boundary northwest of Kauai. 

A more typical trade-wind pattern is expected to return by Tuesday night as high pressure builds to the north-northwest, forecasters said.