Olivia reduced to tropical depression, more rain for Hawaii

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HONOLULU (AP) — The Latest on the tropical depression and its impact on Hawaii (all times local):

10:30 a.m.

Honolulu officials say they may need to evacuate 10,000 people from a residential neighborhood if water in a reservoir continues to rise after heavy rains from a tropical storm.

Olivia crossed the state Wednesday, dumping heavy rains on Maui and Oahu. Meteorologists say it's now a tropical depression moving west away from the islands.

The city's Board of Water Supply said Thursday the water level in Nuuanu (Noo-OO-ah-noo) Dam No. 1 is about 18 inches (46 centimeters) below the spillway.

The agency says it's been siphoning excess water to keep the water below the spillway but Olivia's rains outstripped its siphoning capacity.

The water utility and fire department are pumping water out of the dam to bring levels down further.

The agency says it will coordinate any evacuation notice with the city.

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10:15 a.m.

Rain leftover from Tropical Storm Olivia caused a sewer pipe to overflow in Honolulu, sending more than 30,000 gallons of raw sewage into a stream and harbor.

Olivia crossed the state Wednesday, dumping heavy rains on Maui and Oahu. Meteorologists say it's now a tropical depression moving west away from the islands.

The city's Department of Environmental Services said Thursday workers noticed the overflow at 10:40 p.m. the previous night. They stopped the discharged just before dawn.

The rains overwhelmed a 36-inch pipe on North School Street. This pushed more than 32,000 gallons of sewage out of a manhole. Workers were able to recover nearly 800 gallons but the rest went into a storm drain that feeds into Kapalama Stream and Honolulu Harbor.

The city has disinfected the area.

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Tropical Storm Olivia was downgraded Thursday to a tropical depression after it crossed Hawaii Wednesday, making landfall on Maui and Lanai islands.

Weather forecasters warned downpours would continue, producing additional rainfall of 3 to 5 inches (8 to 13 centimeters) and isolated amounts of 6 to 8 inches (15 to 20 centimeters) on higher terrain.

That could cause life-threatening flash floods because the ground is already saturated, the Central Pacific Hurricane Center said in a statement.

But Maui Mayor Alan Arakawa said he was hopeful the effects of the storm would be limited.

"I'm not seeing any really large areas of damage," Arakawa said at a news conference.

Maui County said several homes in Lahaina were evacuated because of rising waters in a nearby river.

A flash flood warning was issued for Molokai island and Maui. A wind gust of 51 mph (82 kph) was recorded at the airport on the island of Lanai.

The storm, which was a hurricane earlier in the week, slowly weakened as it neared the state.

Forecasters cancelled a tropical storm warning for Oahu and Maui Wednesday after the storm moved south away from the islands.

Matthew Foster, a meteorologist with the Pacific Hurricane Center, said moisture will linger through Friday even though the wind threat has died.

Gov. David Ige and Honolulu Mayor Kirk Caldwell both said they were watching the leftover moisture.

"We're all being cautious. We all do need to be very cautious until tomorrow," Caldwell said.

The Federal Emergency Management Agency sent emergency teams and supplies to Maui ahead of the storm. The National Guard has mobilized personnel and trucks to the east side of Maui.

President Donald Trump has signed a disaster declaration, which will help FEMA respond, the governor said.

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Associated Press writers Caleb Jones in Honolulu and Mark Thiessen in Anchorage, Alaska, contributed to this report.



 
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