Counties deal with aftermath as flash flood watch remains in effect for Hawaii island

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Wet weather drenched most of the state Monday and Tuesday.

Thunderstorms pounded Oahu for hours Monday night, and Maui is still working to resolve issues following an island-wide power outage, though the bulk of customers are now back online.

The weather is clearing up for most of the state, though Hawaii island could still see some wet weather ahead.

A flash flood watch remains in effect for the island through late Tuesday night.

Heavy showers and thunderstorms associated with a slow-moving cold front over the Big Island could result in flash flooding.

Heavy rain could become widespread and cause streams to quickly overflow their banks, leading to life threatening flash flooding.

Road closures

Hawaii island per Hawaii County Civil Defense:

  • Kuakini Highway above Kailua-Kona, Wood Valley Road near Pahala, and Kukila Street and Railroad Avenue in Hilo were closed due to flooding.


  • Hana Highway near Airport Road remains closed due to a downed power pole.
  • Piilani Highway near Kalepa is closed due to a rockslide.
  • Flooding has also closed Piilani Highway from Kalepa to Kaupo although if need be, emergency services can pass through.

Motorists should stay off the roads until the weather subsides.

Maui Electric crews work on repairs near the intersection of Hana Highway and Hookele Street

Maui power outage

Maui Electric crews have restored 98 percent of customers affected during an island-wide power outage following lightning strikes Wednesday.

At about 2:50 a.m., approximately 66,500 customers on Maui island – Central Maui, South Maui, West Maui, Upcountry, Paia and Haiku area and parts of East Maui – experienced a power outage after lightning hit the electrical system across the island, causing damage to electrical equipment, including downed power lines in various areas.

Crews are working to restore the remaining 1,1100 customers in Kahului, Paia, Haiku, Kaanapali, and South Maui by 8 p.m.

“We really worked hard to restore critical infrastructure. In this kind of situation, it’s really important for us to get the hospital, airport, police, and county emergency operations center back online quickly, so that was done by 6:30 this morning,” said Sharon Suzuki of Maui Electric Co. “Restoring power to the remaining customers once our critical infrastructure was back is kind of delicate, because we have to make sure we constantly balance customer usage, or demand for electricity, with what’s available in terms of generation. So it does take time and we want to make sure that we don’t inadvertently drop customers again, and maintain system stability when we do that.”

If anyone experiences an outage after 8 p.m., contact Maui Electric at 871-7777.

The utility was able to maintain power to 600 customers in Hana via generators.

The power outage caused a sewage spill at the Wailuku Pump Station off of Kahului Beach Road in Wailuku. Approximately 40,000 gallons of wastewater flowed over a dirt access road and into the ocean. The spill site was cleaned and disinfected, bacteriological tests were conducted, and warning signs were posted. The state Department of Health was notified.

School closures

Sacred Hearts School in Lahaina and Kamehameha Schools Maui campus were closed Tuesday.

University of Hawaii Maui College canceled morning classes for their Kahului campus and resumed classes at 10 a.m.

State public schools remain open.

View from the Headquarters Visitor Center in the Summit District of Haleakala National Park

Weather-related closures and cancellations


At Haleakala National Park, Hosmer Grove Trail and campground, and tent camping are closed until further notice. Kaupo Gap Trail leading to the Kalepa Bridge is washed out by the heavy rain. The last mile of Pipi Trail is closed due for hazardous tree assessment. Seven Sacred Pools remains closed, flooding reported.

Kaunoa Senior Center was closed due to power outage.

Some Division of Motor Vehicles and Licensing offices were closed because the county cannot connect with the state database. Kihei, Kahului, Lahaina and Hana offices are open. Pukalani remains closed.


Hans L’Orange Neighborhood Park was closed Tuesday due to the inclement overnight weather and saturation of rainfall on the baseball field.

The fields at Patsy T. Mink Central Oahu Regional Park, including the baseball, softball, and multipurpose fields, were previously closed due to heavy rainfall and ground saturation. They reopened Tuesday afternoon.

Detailed forecast

Storms like this will bring significant rain to the islands through next April, during Hawaii’s wet season.

Thunderstorms came ashore over Kapolei and slowly moved into the Pearl Harbor area. Storms are now spread from Pearl Harbor to Hawaii Kai.

This is the worst we’ll see for Oahu with most of the heavy rain over Oahu’s south shores.

Maui will be drenched mid-morning Tuesday before the bulk of the rain moves into Hawaii island Tuesday night.

The storm front could stall over Hawaii island, which means the island could see extended rain well past what the rest of the state experiences.

Expect cool, crisp air especially on Kauai and Oahu, but only after the system passes.

Leslie Drechsler shared video of the thunder and lightning from along the Ala Wai, looking toward Diamond Head Monday night.

Interactive Radar
Interactive Radar
Statewide radar
Statewide radar
Hawaii Island
Hawaii Island

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