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Flood watch continues as rain, high surf hit Hawaii | Honolulu Star-Advertiser

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Flood watch continues as rain, high surf hit Hawaii | Honolulu Star-Advertiser


NATIONAL WEATHER SERVICE

Radar shows heavy rain over Oahu and Kauai County earlier today.

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Periods of heavy rain and hazardous ocean conditions continued today across parts of Hawaii, with the greatest flood risk focused on Kauai and Niihau as wet weather lingers into midweek.

The National Weather Service said a lingering weather system west of the islands is continuing to pull warm, moisture-heavy air northward, keeping showers in the forecast through at least early Tuesday. Some areas of Kauai and Oahu picked up another 1 to 2 inches of rain overnight, adding to already saturated ground from the weekend.

Forecasters said the flood watch remains in effect through late tonight for Kauai, Niihau and Oahu as even moderate rainfall could quickly turn into runoff. Flooding is most likely in low-lying areas, along streams and on roads that typically collect water.

While rainfall may be lighter than Sunday’s downpours, forecasters warned that slow-moving showers could linger over the same areas, raising the risk of flooding for streets and streams. Isolated thunderstorms are also possible, mainly over Kauai and Oahu, through early Tuesday.

Looking ahead, the flooding threat is expected to ease for Oahu by early Tuesday, but Kauai and Niihau could remain at risk through the middle of the week. Another cold front approaching from the northwest is forecast to stall near those islands, keeping skies mostly cloudy with periods of rain. Officials said flood watches may need to be extended for the western islands if conditions worsen.

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Conditions should gradually improve late in the week, with fewer showers expected by Thursday and Friday. Tradewinds are forecast to return over the weekend, bringing drier air and more typical weather heading into the holiday week.

At the same time, dangerous surf remains a concern statewide. A large north-northwest swell is producing advisory-level waves along north- and west-facing shores. Surf heights of 15 to 20 feet along north-facing shores and 10 to 14 feet along west-facing shores are expected to continue through this evening for Niihau, Kauai and Oahu, before slowly easing.

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High surf advisories remain in effect into early Tuesday for Molokai, Maui and parts of Hawaii island, where an earlier warning was downgraded as surf heights came in lower than expected. Ocean safety officials continue to urge the public to stay out of the water if conditions appear unsafe.

Marine conditions are also rough, with a small craft advisory in effect through 6 p.m. today for waters around Kauai and Oahu. Seas of 7 to 10 feet are making conditions hazardous for smaller boats, especially for inexperienced mariners.

Residents and visitors are urged to monitor forecasts closely, avoid flooded roads and heed all ocean and marine advisories.


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Hawaii Water Polo enters Big West Championship as number 1 seed

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Hawaii Water Polo enters Big West Championship as number 1 seed


The Hawaii Rainbow Wahine Water Polo Team has secured the number 1 seed in the Big West Championship Tournament.

“I think everyone understands the importance of the tournament and, what we want to do,” said Hawaii Junior Daisy Logtens.

Hawaii enters the tournament 13-5 overall and 6-0 in conference play.

UH will open up the conference tournament against 8th seed UC Santa Barbara. UH recently defeated UCSB 18-4 on March 28th in Manoa.

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The 1st match for UH is set for Friday at 7:00am HT in Long Beach, California.

The winner of (1) Hawaii vs (8) UCSB will take on the winner of (4) vs (5) UC San Diego.



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‘Surreal’: Flood victims near UH Manoa prepare for third storm

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‘Surreal’: Flood victims near UH Manoa prepare for third storm


HONOLULU (HawaiiNewsNow) – Anxiety ran high in Manoa ahead of Wednesday’s impending storm, which comes about two weeks after a second Kona low flooded 14 residential units along Koali Road.

It was not the first time the homes were swamped in recent months.

Last November, a water main break overflowed the same ground-level units near UH Manoa, causing extensive damage.

Now, as tenants clean up and repair their homes after the latest storm, they are bracing for yet another storm expected to hit Wednesday.

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“It sounds like a movie, it sounds a little surreal, a little not real,” Koali Road resident Carlos Jimenez said.

Jimenez, whose home was flooded both times, recalled the recent one, which covered his home in about two feet of water, describing the deluge as “a little bit above knee high.”

The damage to Jimenez’s unit went beyond the floor, too, because of the heavy rain.

“The ceiling got water-damaged. From what I saw, it was soaking water, sagging, and it was about to collapse,” Jimenez said.

Fortunately, crews repaired his roof days before the third storm could send another round of downpours.

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Outside, both of Jimenez’s vehicles sat damaged and dead.

After all that he has seen at his Koali Road home, Jimenez said he would take the new storm seriously.

“Get ready, you know, with my mother. She lives with me. She’s 87,” Jimenez said.

After witnessing the devastation in the neighborhood, Jimenez’s neighbor, Dario Aricala, whose home was spared, is not taking it for granted during this week’s wet weather.

“The last storm, we almost got flooded. We are hoping for the best that this storm is not such bad,” Aricala said.

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Click here to donate to Jimenez’s GoFundMe page.

In the meantime, other residents have been staying elsewhere during cleanup and repairs, and the property manager said he has been helping them.



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Flood Watch issued across Hawaii as kona low system brings risk of heavy rain and flood

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Flood Watch issued across Hawaii as kona low system brings risk of heavy rain and flood


A statewide Flood Watch is in effect across Hawaii from Wednesday morning, April 8, through Friday afternoon, April 10, as a developing low-pressure system northwest of the islands, described by the National Weather Service (NWS) public guidance as a kona low, is forecast to bring prolonged heavy rainfall and elevated flood risk.

The NWS office in Honolulu reports that the system will draw deep tropical moisture northward across the state, creating conditions favorable for widespread showers and thunderstorms. Excessive rainfall may lead to flash flooding in urban areas, low-lying locations, and regions with poor drainage, while steep terrain remains susceptible to landslides.

All major islands, including Kauai, Oahu, Maui, Molokai, Lanai, Kahoolawe, and the Big Island, are included in the Flood Watch. Forecasters note that antecedent wet conditions from recent rainfall events have left soils saturated, increasing runoff efficiency and the likelihood of rapid stream rises under heavier rainfall rates.

Satellite image acquired at 04:00 UTC on April 7, 2026. Credit: NOAA/GOES-West, RAMMB/CIRA, The Watchers

Multiple kona low systems affected the islands between March 10 and March 22, producing extreme rainfall totals, including more than 330 mm (13 inches) in about 12 hours on Oʻahu’s North Shore and multi-day accumulations reaching approximately 1 170 mm (46 inches) on Maui.

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The events triggered widespread flooding, landslides, evacuations, and infrastructure stress, including emergency warnings tied to Wahiawā Dam and power outages affecting more than 130 000 customers statewide.

Despite several days of drier trade wind conditions, soil moisture remains elevated, allowing new rainfall to convert more efficiently into surface runoff, increasing the likelihood of rapid stream rises and flash flooding under the current forecast system.

The heaviest rainfall associated with the new system is forecast to develop during the midweek period, with conditions deteriorating from Wednesday into Thursday as the low-pressure system strengthens west of the state. Forecast guidance indicates that the western islands may experience the initial phase of heavier rainfall before activity gradually shifts eastward later in the event.

In addition to heavy rain, the system is expected to generate strong southerly winds, with gusts of 64–80 km/h (40–50 mph) possible across many areas and locally stronger gusts exceeding 93 km/h (58 mph) in exposed locations or near convective activity. A Wind Advisory may be issued as conditions develop.

Winter weather conditions are also possible at higher elevations on the Big Island, resulting in a Winter Storm Watch in effect for summits above 3 810 m (12 500 feet), where a combination of snow and freezing rain is forecast during the same period.

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Heavy rainfall is likely to persist into Thursday and Friday, with the flash-flood threat remaining elevated into the weekend, but periods of heavy rain may continue beyond the initial peak as moisture remains in place around the system.

The setup reflects a kona low pattern, characterized by a low-pressure system northwest of the islands producing southerly flow and transporting deep tropical moisture into the region over multiple days.

References:

1 Area Forecast Discussion for Hawaii – NWS Honolulu – April 7, 2026

2 Flood Watch – NWS Honolulu – April 7, 2026

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