UPDATE: 7:20 p.m.

A flood advisory for West Oahu and a portion of Maui have both been canceled.

5:45 p.m.

A flood advisory has been issued for West Oahu until 8:45 p.m. today.

“At 5:33 p.m., radar indicated heavy rain over Waianae. Rain was falling at a rate of 1 to 2 inches per hour,” forecasters said.

The advisory includes Waianae, Nanakuli, Schofield Barracks, Makakilo, Lualualei, Makaha, Maili, Makua Valley and Kaena State Park.

4:50 p.m.

The flood advisory for Oahu has been canceled, but another one was issued for a portion of Maui.

The National Weather Service issued the flood advisory until 7:45 p.m. for Kihei, Ulupalakua, Makena, Keokea, Wailea and Kula.

“At 4:46 p.m., radar indicated heavy rain over Ulupalakua. Rain was falling at a rate of 1 to 2 inches per hour,” forecasters said.

2:30 p.m.

The National Weather Service has issued a flood advisory for the northern part of Oahu, effective through 5:15 p.m. today.

At 2:12 p.m., radar indicated heavy rain over portions of Oahu, according to the National Weather Service in Honolulu. Rain was falling at a rate of 1 to 2 inches an hour.

Locations in the advisory include but are not limited to Hauula, Punaluu, Laie, Haleiwa, Waialua, Waikane, Kahuku, Kaaawa, Waiahole, Kahaluu, Ahuimanu, Kaneohe, Kaneohe Marine Base, Kailua, Helemano Housing, Waimea Valley, Kahana Valley State Park, Waimea Bay, Pupukea and Malaekahana State Park, forecasters said.

Officials warned the public to stay away from streams, drainage ditches and low-lying areas prone to flooding. Rainfall and runoff will cause hazardous driving conditions.

The public should not cross fast flowing or rising water in a vehicle or by foot, they said.

Hurricane Marie, meanwhile, at 2 p.m. remained a Category 4 storm holding steady in intensity about 1,980 miles east of Hilo, according to the National Hurricane Center in Miami. Marie had maximum sustained winds of 130 mph, and was traveling west-northwest at 12 mph.

Weakening is forecast to begin on Saturday, and Marie is expected to be a tropical depression by Wednesday when it will still be in the East Pacific, far from Hawaii.

EARLIER TODAY

Scattered showers and a slight chance of thunderstorms are expected today, forecasters said, as a trough of low pressure moves from east to west across the Hawaiian islands.

The National Weather Service in Honolulu said most of the showers will be over the central islands today, and the western islands tonight, with the potential for thunder for all islands this afternoon and evening.

It should gradually clear up Saturday afternoon, forecasters said, as the weather system exits to the west, bringing back more typical tradewinds by Saturday night, which are expected to last through Tuesday.

Today’s forecast is partly to mostly cloudy for the smaller islands, with scattered showers and a slight chance of thunderstorms, and highs from 84 to 89 degrees Fahrenheit. Locally heavy rainfall is possible for Kauai.

Lows tonight range from 71 to 76 degrees. Tradewinds should remain variable at 5 to 15 mph today and tonight, according to the weather service.

Surf along north shores, meanwhile, will increase this morning, approaching advisory levels at 10 to 14 feet, before falling to 7 to 10 feet on Saturday. Surf along most west shores will remain significantly lower, at 4 to 6 feet today and 3 to 5 feet Saturday.

Surf along southern shores will remain small over the weekend.

East shore surf, however, may increase Sunday through early next week as a swell associated with Hurricane Marie in the East Pacific reaches the islands.

At 8 a.m. today, Marie was a Category 4 hurricane located about 2,025 miles east of Hilo, with maximum sustained winds of 130 mph, and moving west-northwest at 14 mph.

The National Hurricane Center said some strengthening is possible later today or tonight, but that weakening is forecast to begin on Saturday. Marie is expected to be a tropical depression by Wednesday when it will still be in the East Pacific.

Hurricane-force winds extend outward up to 25 miles from the center, and tropical storm-force winds extend outward up to 125 miles, according to the hurricane center.