Some still feeling effects of thunderstorm

Raindrops cling to Kihei orchids Wednesday morning. Tuesday morning’s heavy rains that knocked out power all over the island have passed, with a forecast of partly cloudy skies today. The Maui News / MATTHEW THAYER photo

The Maui News

The effects of the thunderstorm early Tuesday continue to linger in East Maui with the county Department of Water Supply working to repair a backup booster pump that malfunctioned in Koali.

The water department asked consumers in the Koali area to continue conserving water until further notice. Water users should postpone washing of vehicles, the irrigation of yards and other unnecessary water use, the department said.

A tree fell on power lines in the area Tuesday evening, which knocked out electricity to the area and the pump. Power has been restored but not the pump and water service, the water department said Thursday.

The powerful storm triggered the posting of a rare severe thunderstorm warning for Maui early Tuesday. The storm brought heavy rain, brisk winds and lots of lightning and thunder.

The storm knocked out power to 66,500 MECO customers when it hit the island. Most people had their power back by Tuesday evening.

The thunderstorm generated 1.29 inches at Kahului Airport, breaking the record for the day of 0.62 inch set in 1958, according to the National Weather Service. As much as 6 inches fell in a 24-hour period in parts of Maui.

A rough ocean has triggered a high-surf warning through 6 p.m. Saturday for north-facing shores of Maui and north- and west-facing shores of Molokai. Surf is expected to build to 25 to 32 feet today along north shores of Maui and Molokai and 15 to 20 feet today along west shores of Molokai, the weather service said.

A high-surf advisory is in effect for west-facing shores of Maui until 6 p.m. Saturday. Surf is expected to peak at 10 to 15 feet, the weather service said.

A northwest swell building Thursday evening and today is the cause of the high-surf warning and advisory, the weather service said. The swell will peak today then decline into Saturday.

The warning and advisory mean that waves will be pounding the shorelines, generating beach run-up and creating rip currents and other dangerous swimming conditions, the weather service said.

A small-craft advisory has been posted for the Kaiwi Channel between Molokai and Oahu and within Maui County windward waters through 6 p.m. Saturday. Seas will be building to 8 to 13 feet today and are expected to decline Saturday.

The forecast for today is partly cloudy with scattered showers over windward and mountain areas and isolated showers over leeward areas. High temperatures will be between 80 and 85 degrees with low temperatures 66 to 71 degrees. Winds are expected from the northeast blowing up to 15 mph.