Tropical Storm Lester continued to weaken as it moved away from Hawaii on Sunday, but weather forecasters warned that a band of moisture trailing close behind could still generate stormy weather across the state early today.

Flood advisories for Oahu, Hawaii island and Molokai were allowed to expire Sunday evening as Lester continued to move northwest away from the islands.

At 5 p.m. Sunday the storm was about 430 miles north-northwest of Honolulu and 345 miles north- northwest of Lihue, moving northwest at 17 mph and bearing maximum sustained winds of 50 mph.

Lester is forecast to gradually turn toward the north and slow tonight and Tuesday. Its track eventually could take it toward British Columbia, much like the remnants of Hurricane Ignacio in September 2015.

Heavy rain associated with the storm fell over Oahu on Sunday afternoon, concentrated in Mililani, Aiea, Waipahu, Waialua, Wahiawa, Kunia, Pearl City and Waikele.

Radar also indicated heavy rain and nearly stationary thunderstorms upslope of Kailua-Kona, with rain falling at a rate of 1 to 3 inches per hour on upslope sections between Kailua-Kona and Milolii and across leeward slopes of Mauna Kea, upslope of Waikii.

The trailing band of moisture is expected to move east over the state today, maintaining the threat of locally heavy showers, according to the National Weather Service.

Tradewinds are expected to follow, and after that the arrival of a drier and more stable air mass that will contribute to a more typical tradewind pattern through the rest of the week.

A developing upper-level trough east of the state could generate showery tradewinds in the latter half of the week, forecasters said.

Meanwhile, weather trackers are keeping tabs on Tropical Storm Newton, which formed off the Pacific coast of Mexico on Sunday and was moving north toward Baja California and Los Cabos.