UPDATE: 9 p.m.

The flash flood warning for Maui has been extended until midnight.

West Maui is seeing heavy rain, and stream levels remain high. More heavy showers are developing south of Maui and are expected to lift northward over the island through the late evening and overnight hours, according to the National Weather Service.

Officials warn that even brief periods of heavy rain could lead to more flooding impacts due to the saturated grounds from the previous episode.

Some locations that will experience flash flooding include Kahului, Kihei, Lahaina, Waikapu, Maalaea, Wailuku, Puunene, Waiehu, Waihee, Paia, Haliimaile, Olowalu, Pukalani, Makawao, Kahakuloa, Wailea, Kula, Keokea, Pauwela and Haiku-Pauwela.

8:30 p.m.

Don’t miss out on what’s happening!

The National Weather Service issued a flood advisory for Lanai until 12:30 a.m. Sunday.

The flood advisory for Molokai has been extended until 9:30 p.m. Heavy showers and thunderstorms were tracking northeast over the eastern areas of the island. Some locations that will experience flooding include Ualapue, Kamalo, Pukoo, Kalaupapa National Park, Kawela, Halawa Valley, Kaunakakai and Kualapuu.

The flash flood warning for Maui remains in effect until 9 p.m.

8 P.M. HECO UPDATE

Hawaiian Electric has restored electricity to about 900 additional customers in the Kawailoa area on Oʻahu’s North Shore after service was shut off as a safety precaution during recent flooding.

The outage occurred after it de-energized its Waialua substation Friday to protect residents and crews working in flood-affected areas. Earlier today, service was also restored to approximately 2,200 customers in the Kuilima/Turtle Bay and Waimea communities.

Despite the progress, about 3,300 customers in the North Shore flood zone remain without power. According to HECO, service will not be restored to those areas until damage assessments and necessary repairs are completed, citing safety concerns. Inspection teams are continuing to assess damage.

“Safety is our highest priority, and everyone knows water and electricity don’t mix. We have to be extremely careful before energizing,” said Shari Ishikawa, the utility’s incident commander, in a media release.

Officials urged residents returning to flooded properties to switch off circuit breakers and check for water intrusion in electrical systems. Submerged breakers or outlets could pose serious hazards once electricity is restored.

On Maui, HECO reported that crews and contractors restored service today to more customers affected by last week’s Kona low storm, including all remaining customers in East Maui. They are currently responding to an outage in the Waihee area affecting about 1,000 customers. Work continues on Maui and Hawaii Island to restore power to isolated individual customers still without service.

6 p.m.

The flash flood warning for Maui has been extended until 9 p.m.

The National Weather Service reported heavy showers and thunderstorms over West Maui. Flooding remains ongoing, and stream levels remain high across West Maui.

5:35 p.m.

The flash flood warning for Maui has been extended, and the Maui Emergency Management Agency elevated its evacuation advisories for some Iao Valley and Wailuku River areas to warnings as heavy rain continues to fall over the Valley Isle.

Officials stressed that warnings and advisories are not mandatory evacuation orders.

Other areas under MEMA evacuation warnings are neighborhoods in Lahaina, Kihei and Iao Valley, as well as Wailuku along Iao River; areas under advisories are portions of South Maui, Molokai, Lahaina and East Maui.

A shelter at Baldwin High School gym, 1650 Kaahumanu Ave., Wailuku, will reopen at 7 p.m..

To view whether which areas are under MEMA evacuation warnings or advisories, go to Genasys Protect app at protect.genasys.com.

The Maui flash flood warning is in effect until 6 p.m. “At 4:17 p.m., radar indicated heavy showers have diminished slightly, with rain falling at rates of up to 1 inch per hour,” the National Weather Service warning said. “Flooding remains ongoing. Stream levels remain high across West Maui, especially in Ukumehame Gulch and the Waihee River, and emergency management reported road closures in Lahaina, Kahului, and Wailuku areas.”

Locations that will experience flash flooding include Kihei, Waikapu, Maalaea, Wailuku, Waiehu, Waihee, Paia, Olowalu, Makawao, Kahakuloa, Kula, Keokea, Pauwela and Haiku, forecasters said.

The flash flood warning for Lanai has expired, but the island is under a flood advisory tonight.

Oahu is also under a flood advisory until 8:30 p.m. as showers returned to the islands after a few hours respite today.

“At 5:20 p.m., radar indicated heavy showers and thunderstorms moving over Honolulu from the southwest, with rain falling at a rate of 1 to 2 inches per hour,” the Oahu advisory aid “Expect heavy showers and thunderstorms to quickly pass over the southeast half of Oahu into early evening.”

Locations that may experience flooding include Honolulu, Manoa, Maunawili, Palolo, Kaneohe, Kalihi, Waimanalo, Kailua, Moanalua, Ahuimanu, Kaneohe Marine Base, Salt Lake, Hawaii Kai, Kahaluu, Halawa, Aiea, Nuuanu, Makiki-Tantalus, Makiki and Moiliili.

5:15 p.m.

Hawaiian Electric officials say they have restored electricity to about 2,200 customers in the Waimea and Kuilima/Turtle Bay areas on Oahu’s North Shore.

The areas, which were outside the flood zone, lost power after Hawaiian Electric de-energized its Waialua substation as a safety precaution during Friday’s emergency,

Crews are working to restore roughly 900 customers in the Kawailoa area who are powered by the same substation and are also outside of the flood zone, HECO said.

Earlier today, the company said about 6,500 Oahu customers were without electricity, including 6,400 in the North Shore area.

4:15 p.m.

The Honolulu Board of Water Supply is warning all water users in Waialua, Haleiwa, Sunset, Pupukea, and Waialee (ending at Turtle Bay) to boil any tap water pulled used for consumption.

BWS officials said they issued the advisory as a precaution due to potential damage to the water system caused by the recent heavy rain.

Water for drinking, cooking, and making ice should be boiled and cooled before consuming to ensure the destruction of all harmful bacteria and other microbes, they said.

“This boil water notice is in effect until further notice. Do not drink the water without boiling it first,” BWS said.

The water should be brought to a “vigorous rolling boil and then boiled for three minutes,” officials said in a news release.

3:50 p.m.

The flash flood warnings for Maui and Lanai have been extended while the Molokai warning has expired.

”At 2:46 p.m., radar indicated heavy showers continuing to move over western and central Maui from the southwest, with rain falling at rates of 1 to 2 inches per hour,” said the National Weather service the Maui warning, which is in effect until 6 p.m. “Emergency management reported road closures in Lahaina and near Kahakuloa, and a rapid rise in water level has been observed at Ukumehame Gulch.”

Maui locations that will experience flash flooding include Kahului, Kihei, Lahaina, Waikapu, Maalaea, Wailuku, Puunene, Waiehu, Waihee, Paia, Haliimaile, Olowalu, Pukalani, Makawao, Kahakuloa, Wailea, Kula, Keokea, Pauwela and Haiku-Pauwela, forecasters said.

The warning for Lanai is in effect until 5:45 p.m. “At 2:36 p.m., radar indicated heavy showers and thunderstorms moving over Lanai from the southwest, with rain rates of 1 to 2 inches per hour. Flash flooding is ongoing or expected to begin shortly,” the warning said.

3:35 p.m.

Honolulu city officials said all emergency evacuation shelters except Kaneohe District Park will close as of 6 p.m. today.

The announcement came after the evacuation orders for North Shore residents in Waialua and Haleiwa was lifted earlier this afternoon.

Honolulu emergency officials urge residents returning to evacuated areas to use “extreme caution,” including:

>> Watch for hazards when driving or cleaning up in affected areas.

>> Follow all instructions from first responders and crews in the area.

>> Avoid contact with floodwater which may contain debris, chemicals, or sewage.

>> Watch for hazards such as debris, unstable surfaces, or damaged structures during cleanup.

3 p.m.

The evacuation order has been lifted for North Shore residents in Waialua and Haleiwa after flood waters receded and the potential for additional flooding subsides, Honolulu city officials said.

While they continue to monitor conditions, including water levels and weather forecasts, officials said “it has been determined that residents may safely return to previously evacuated areas. Residents are advised to exercise caution when returning home and remain attentive to weather updates and should expect impacts to utility services as crews continue working on restoration.”

An evacuation order was issued for the area Friday morning after flood waters overwhelmed the communities, flooding homes and stranding over 200 people who needed to be rescued.

Honolulu Department of Emergency Management officials urged the public to:

>> Use caution when re-entering homes and neighborhoods.

>> Watch for debris, mud, or damaged infrastructure.

>> Avoid standing water and report hazards such as downed lines or unstable structures.

>> Contact authorities if unsafe conditions are observed.

City officials continue to ask the public to use 911 for emergencies only.

They said that Waialua Beach Road Bridge has been reopened to local traffic, and that crews are preparing Farrington Highway Kaukonahua Stream Bridge (between Kaupe Road and Kamehameha Highway) to reopen later today.

“Expect delays and traffic congestion as travel over these bridges may be reduced in speed and lane capacity,” officials said in a news release.

Hawaiian Electric Co. officials said crews have started working to restore power to the communities after turning it off as a safety precaution during the flooding emergency.

2 p.m.

The flash flood warning for the Oahu North Shore areas under an evacuation order has expired, and Hawaiian Electric officials say they have started work on restoring power to roughly 6,400 customers in the zone.

The company cut power to Waialua and Haleiwa-area customers in the evacuation zone as a safety precaution Friday morning during the flood emergency.

HECO officials said early this afternoon that lines and equipment need to be checked for damage, and that any needed repairs must be completed before electricity can be turned on for affected customers.

Crews will first check the Waialua Substation, which provides power through and beyond the evacuation zone, company officials said in a news release.

“Once the substation is cleared of any floodwater, debris or damage, power lines that deliver electricity from the substation to the Waimea, Kuilima/Turtle Bay and Kawailoa areas, which are outside the evacuation zone, will also need to pass safety inspection,” HECO said. “If there is no damage, those lines may be re-energized so about 2,200 customers in those areas can receive power. Hawaiian Electric personnel will then continue inspections and restoring other areas as soon as it is safe to do so.”

The company said all customers in the impacted area should:

>> Make sure electrical outlets are clear of any water and then shut off the main breaker.

>> Wait for Hawaiian Electric to announce it is safe to turn on the main breaker.

>> Call Hawaiian Electric’s Trouble Line at 1-855-304-1212 to report any damage to power lines or poles around their home.

They also warned that downed power lines may be energized and dangerous. “For your safety, stay at least 30 feet or more away from downed power lines. Read more about downed power line safety on the company’s website,” officials said.

The company said that as of 1:30 p.m.:

>> About 6,500 Oahu customers were without electricity, including 6,400 in the North Shore area.

>> About 170 customers were without power as the Maui, Lanai and Molokai were being hit hard by Kona-low rains today.

>> And on Hawaii island, about 230 customers were out of power, mostly in the Puna area with restoration work focused on upper and lower Puna as well as Wood Valley and Kapapala Ranch.

1 p.m.

Farrington Highway in Waialua is closed in both directions between Kaupe Road and Kamehameha Highway, Honolulu city officials said.

One lane of the Waialua Beach Road Bridge has been reopened to vehicular traffic and access into Waialua remains limited at this time, according to a city alert at 12:51 p.m.

The evacuation order in the area remains in effect, including parts of Waialua west (Kaena side) of Thompson Corner. For the evacuation and shelter map, go to https://p.veoci.com/hnlevac.

The public is reminder to stay out of evacuated areas.

12:50 p.m.

The flash flood warning for Molokai has been extended until 3:45 p.m.

”At 12:31 p.m., radar indicated heavy rainfall with rates of 1 to 2 inches per hour over southeast Molokai,” the updated National Weather Service warning said. “Emergency management reported the closure of Kamehameha V Highway near mile marker 7 due to flooding, and rises is water levels are occurring at gauges in Kawela Gulch.”

The flash flood warning for Maui lasts until 3 p.m, while the Lanai warning is in effect until 2:45 p.m.

12:10 p.m.

The island of Maui is under a flash flood warning until 3 p.m. and the Maui Emergency Management Agency has elevated its evacuation advisories to warnings for areas in West Maui.

The evacuation warnings cover the Wahikuli and Leialii areas below Ka Lai Ola in Lahaina, and for several zones mauka of Honoapiilani Highway from Malanai Street to Kahoma Stream in Lahaina due to flood risk, according to MEMA.

Iao and Kihei areas remain under MEMA evacuation warning, while other vulnerable areas around Maui County remain under evacuation advisories, including places in Molokai, Lahaina, South Maui and East Maui.

Officials stressed that warnings and advisories are not mandatory evacuation orders. To view whether which areas are under a MEMA evacuation warning or advisory, go to Genasys Protect app at protect.genasys.com.

MEMA said in a news release issued just before noon that Maui County “contracted crews have been actively working through the night into the morning to redirect overflow by pumping water from the retention basins to help keep levels safe.” The Lahaina Civic Center was opened as a shelter Friday when the area was under an evacuation advisory.

MEMA officials explained the different levels of evacuation alerts:

>> Advisory: Be on alert and follow county recommendations. Follow instructions from officials and stay informed. Flood evacuations need only to move to higher ground in your area; moving short distances to nearby shelters or nearby higher ground out of flood zones will prevent being stuck on fragile or crowded roadways.

>> Warning: Potential threat to life and/or property. Those who require additional time to evacuate, and those with livestock and pets, may consider leaving early.

>> Order: Mandatory evacuations due to imminent threat to life and/or property. Leave now.

The National Weather Service flash flood warning for Maui said, “At 11:57 a.m., radar indicated heavy showers and thunderstorms moving over West Maui from the south, with rain falling at rates of 1 to 3 inches per hour. Emergency management reported flooding with a road closure in Lahaina. Streams will rise rapidly across West Maui, including in areas not experiencing heavy rain, and heavy rain is expected to spread to additional areas of Maui this afternoon.”

Locations that will experience flooding include Kahului, Kihei, Lahaina, Waikapu, Maalaea, Wailuku, Puunene, Waiehu, Waihee, Paia, Haliimaile, Olowalu, Pukalani, Makawao, Kahakuloa, Wailea, Kula, Keokea, Pauwela and Haiku-Pauwela, NWS said.

Maui joins Molokai and Lanai which were placed under flash flood warnings this morning.

RELATED

>> Oahu takes brunt as statewide storm losses reach $1 billion

>> A list of evacuation shelters, assembly areas and closures

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>> Flooding forces 233 rescues as storm grows

>> City monitors Wahiawa Dam for failure

>> Oahu residents asked to conserve water during storm

>> Hawaii Community Foundation activates disaster fund

>> PHOTOS: Kona low storm system pummels Oahu with rain and floods

11:45 a.m.

The National Weather Service has issued a flash flood warning for the island of Lanai until 2:45 p.m.

“At 11:32 a.m., radar indicated heavy showers and thunderstorms moving over Lanai, with rain rates of of 1 to 3 inches per hour,” the warning says. “Flash flooding is ongoing or expected to begin shortly.”

The locations that will experience flash flooding include Lanai City, Manele and Lanai Airport, NWS said.

Molokai remains under a flash flood warning until 12:45 p.m. and Maui is under a flood advisory until 2 p.m.

11:15 p.m.

The flash flood warning for Oahu has expired as the recent heavy-rain bands of the Kona low moved east over Maui County. Molokai remains under a flash flood warning until 12:45 p..m.

“At 9:34 a.m., radar indicated heavy rainfall with rates of 1 to 2 inches per hour over southeast Molokai,” the warning said. “Local law enforcement reported debris on the road near mile marker 7 on Kamehameha V Highway, and a gauge on the Kawela Gulch is showing a rapid rise in water levels. Flash flooding is ongoing or expected to begin shortly.”

Molokai locations that may experience flash flooding include Pukoo, Ualapue, Kamalo, Halawa Valley, Kawela and Kalaupapa National Park.

Maui and Lanai are under flood advisories until at least early this afternoon.

The heavy showers that drenched East Oahu and Windward areas overnight eased up this morning .

Still, Honolulu city officials reminded the public that “isolated showers with rates of 1 to 3 inches per hour are possible this afternoon, and again late tonight/early Sunday. Flash flooding remains a threat as the ground is extremely saturated.”

An evacuation order remains in place for residents in Waialua and Haleiwa. For the evacuation and shelter map, go to https://p.veoci.com/hnlevac.

Although the flash flood warning for all of Oahu expired, the North Shore remains under a warning due to the threat that Friday’s heavy rains posed to the Wahiawa Dam. The flash flood warning for that area remains until 1:15 p.m. The warning covers Waialua, Haleiwa, and Kaukonahua Stream, and includes the following streams and drainages: Poamoho Stream, Dole Fields, Poamoho Stream, Kaukonahua Highway, Kaukonahua Stream, Schofield, Mohiakea Gulch, Waialua Town, Kaukonahua Stream-North Fork, Wahiawa, Kaukonahua Stream, Wahiawa, Kiikii Stream, Waialua, Helemano/Opaeula Stream, Haleiwa, Kaukonahua Stream, Waialua and Anahulu River and Haleiwa.

The entire state remains under a flood watch through Sunday afternoon

9:45 a.m.

The National Weather Service issued a flash flood warning for Molokai until 12:45 p.m. today as the Kona-low storm moves east over Maui County this morning.

“At 9:34 a.m., radar indicated heavy rainfall with rates of 1 to 2 inches per hour over southeast Molokai,” the warning said. “Local law enforcement reported debris on the road near mile marker 7 on Kamehameha V Highway, and a gauge on the Kawela Gulch is showing a rapid rise in water levels. Flash flooding is ongoing or expected to begin shortly.”

Some locations that will experience flash flooding include Pukoo, Ualapue, Kamalo, Halawa Valley, Kawela and Kalaupapa National Park.

The flash flood warning for Oahu remains in effect until 11 a.m. but rain over the east side of the island has abated, and NWS radar showing the island currently clear of heavy showers.

Lanai is under a flood advisory this morning and the entire state remains under a flood watch through Sunday afternoon.

9:35 a.m.

Hawaiian Electric officials said about 4,200 customers on Oahu’s North Shore evacuation areas remain without power today.

During the flooding emergency in Waialua and Haleiwa Friday morning, HECO de-energized circuits that cross through the flood zone.

Company officials said that crews are standing by to begin inspection of electrical infrastructure in the flood zone on the North Shore and start the process of safely restoring power. HECO will restore power in phases to prevent overloading circuits and ensure stability, officials said.

They said customers on Oahu, Hawaii island and in Maui County should be prepared for the possibility of new outages due to ongoing storm.

As of 9 a.m., the company said,

>> About 6,400 Oahu customers are without power, including those on the North Shore. Crews continue responding to outages caused by trees falling on lines, as well as fixing damage caused by last week’s Kona low storm.

>> On Hawaii island, fewer than 50 customers remained without power with restoration work focusing in Wood Valley, Kapapala Ranch and upper & lower Puna.

>> And in Maui County, crews continue to work on restoring power to about 100 remaining customers impacted by last week’s Kona low storm. Some repairs include the use of helicopter, weather permitting.

8:45 a.m.

The city’s Department of Environmental Services has reported wastewater spills at facilities in Ahuimanu, Kailua and Waimanalo during Friday’s heavy rain.

According to city officials, the three spills were at:

>> Ahuimanu Preliminary Treatment Facility at 9:20 a.m. Friday when elevated flows exceeded storage capacity, causing a manhole at the facility to overflow into an on-site storm runoff retention basin. The basin subsequently reached capacity and discharged into Ahuimanu Stream. The spill is ongoing.

>> Kailua Regional Wastewater Treatment Plant at 10:10 p.m. when the Tunnel Influent Pump Station reached maximum capacity. Personnel installed portable pumps to manage the inflow. During testing and startup, about 30,000 gallons of wastewater were discharged onto an adjacent grassy area, flowing into Nuupia Pond. The spill was stopped in 10 minutes.

>> Waimanalo Wastewater Treatment Plant at 10 p.m. when high flows overwhelmed the facility, causing an ongoing spill at the Headworks and an initial spill at the Final Clarifier scum pit that reached Puha Stream. While the scum pit spill was stopped at 1 a.m. on March 21, the Headworks spill remains active.

ENV crews are monitoring conditions and calculating total discharge volumes for all locations, officials said.

8:25 a.m.

The National Weather Service has extended the flash flood warning for Oahu until 11 a.m.

“At 7:47 a.m., emergency management continued to report road closures across Oahu due to recent flooding,” the updated warning says. “Additional bands of heavy showers and thunderstorms continue to pass over the southeast half of Oahu, with rain rates as high as 1 to 2 inches per hour.”

The islands of Molokai and Lanai remain under flood advisories this morning, and the entire state is under a flood watch through Sunday afternoon.

5:10 a.m.

Oahu remains under a flash flood warning until at least 8 a.m. today as heavy rain continues to fall on parts of the island.

“At 4:55 a.m., emergency management reported closed roads islandwide as a result of Friday`s flooding,” said the updated warning from the National Weather Service. “While the latest radar depicts light to moderate showers, additional bands of moderate to potentially locally heavy showers may likely in from the south during the early-morning hours.”

The warning may need to be extended beyond 8 a.m. if flooding persists.

Forecasters advise the public to stay away from streams, rivers, drainage ditches, and culverts, even if they are dry, and to not cross fast-flowing or rising water in a vehicle, or on foot.

The islands of Molokai and Lanai are under flood advisories this morning, and the entire state is under a flood watch through Sunday afternoon as the second major Kona-low system in two weeks continues to pound the islands.

The forecast for Oahu calls for rain showers, with possibly thunderstorms, throughout the weekend.

Residents of Waialua and Haleiwa remain under an evacuation order. Honolulu city officials continue to urge residents in Waialua to leave now because the remaining access road out of the area is at high risk of failure if rainfall continues.

“Residents are urged to vacate the area now while conditions are stable. Delaying may result in becoming stranded if conditions worsen. Please prioritize personal safety and exit the area via the remaining open route immediately. Leave now while conditions are safe to prevent becoming stuck,” an updated city alert says.

For the evacuation and shelter map, go to https://p.veoci.com/hnlevac.

PREVIOUS COVERAGE

A powerful Kona low brought intense rainfall to the islands on Friday, triggering evacuations and leaving widespread damage that continued into early Saturday morning.

The most critical situation unfolded on Oahu’s North Shore where torrential rain—up to 8 to 12 inches in some areas—caused life-threatening flooding in communities like Haleiwa and Waialua.

Officials issued a mandatory evacuation order for areas downstream of the Wahiawa Dam after warnings that the structure was at risk of failure. Rising water levels and continued rainfall are keeping authorities on high alert.

Floodwaters have inundated roads, homes and neighborhoods across northern and central Oahu, cutting off access to entire communities. Officials warned that all roads out of Waialua were at risk of failure Friday night, urging anyone remaining to leave before conditions worsened. Across the island, there were landslides and downed trees that made roads impassable.

Hawaiian Electric also reported power outages affecting thousands of customers, particularly on the North Shore. Electricity was shut off as a safety measure during flooding and evacuation efforts. Call HECO’s Trouble Line at 1-855-304-1212 to report any damage to power lines or poles.

Forecasters caution that more heavy showers could redevelop. The entire state remains under a flood watch through Sunday. Conditions may gradually improve starting Monday as the storm system moves away.