UPDATE: 11 p.m.

The flood advisory for the Big Island expired this evening.

6:30 p.m.

A flood advisory in effect until 9:15 p.m. tonight for the Big Island.

Radar this evening indicated heavy rain over the Kau district with rain falling at a rate of 1 to 2 inches per hour.

Locations that will experience flooding include Pahala, Punaluu Beach, Kawa Flats, Wood Valley, Naalehu, Hawaii Volcanoes National Park, Waiohinu, Discovery Harbor and Hawaii Volcanoes Park Kahuku Unit.

3:15 p.m.

The National Weather Service has posted a flood advisory for the island of Maui effective until 6 p.m. due to excessive rainfall.

Radard detected heavy rain over the leeward slopes of Haleakala at 2:53 p.m., with rain falling at a rate of 1.5 to 2.5 inches per hour.

As with the Oahu advisory earlier today, minor flooding is expected on roads, at areas with poor drainage and streams. The flood advisory for Oahu expired at 3:15 p.m.

Locations that will experience flooding include Keokea, Kula, Ulupalakua, Kaupo, Wailea, Makena, Kipahulu and Haleakala National Park.

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A flood advisory has been issued for parts of Oahu as rains pass over leeward and central areas of the island today. The advisory is in effect until 3:15 p.m.

Radar indicated heavy rain falling at a rate of 1 to 2 inches per hour over leeward Oahu at 12:03 p.m., the National Weather Service said.

Some locations that will experience flooding include Waianae, Nanakuli, Makakilo, Waialua, Kapolei, Barbers Point, Ewa Beach, Lualualei, Maili, Makaha, Makua Valley, Koolina, Mokuleia, Campbell Industrial Park, Dillingham Field, Kalaeloa Airport and Kaena State Park.

Officials warn that rainfall could cause minor flooding on roads, near areas with poor drainage and in streams. The public should stay away from streams, drainage ditches, and low-lying areas prone to flooding.