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High surf in effect for east shores of most Hawaiian Isles

COURTESY NOAA/NESDIS/STAR GOES-WEST
                                This satellite image shows moisture building up over the Hawaiian Islands.
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COURTESY NOAA/NESDIS/STAR GOES-WEST

This satellite image shows moisture building up over the Hawaiian Islands.

UPDATE: 3:27 p.m.

A high surf advisory is in effect until Wednesday evening for the east-facing shores of Oahu, Hawaii island, Kauai, Molokai and Maui.

“Strong trade winds will keep large and rough surf in place along east-facing shores through much of this week,” the National Weather Service said in a statement.

Forecasters said rough surf of 7 to 10 feet will affect the eastern shores until 8 p.m. Wednesday. Forecasters said strong breaking waves and currents will make swimming dangerous.

Meanwhile, a small craft advisory is in effect until 6 p.m. Friday for all Hawaiian waters except Maalaea Bay.

“Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in these conditions,” the advisory said.

All other weather advisories and watches from earlier today have expired.

3:15 p.m.

Kauai County officials said in a 3 p.m. update that Kuhio Highway near Hanalei Bridge is now open to one lane of traffic.

Niihau and Kauai remain under a flood watch until 6 p.m. today.

1:30 p.m.

The National Weather Service has canceled a flash flood warning for Kauai, which had originally been extended to 2:45 p.m.

“Widespread heavy rain has diminished over Kauai, stream levels are falling, and water has begun to recede,” said NWS in its advisory. “Emergency management reports that Kuhio Highway near the Hanalei Bridge is closed, but will soon have one lane open. Although the threat for imminent flash flooding has ended, heavy rain may redevelop at any time this afternoon.”

NWS also lifted a flash flood watch for Oahu, but Niihau and Kauai are not out of the woods yet.

A flood watch remains in place for Niihau and Kauai through 6 p.m. today.

11:45 a.m.

The National Weather Service has extended the flash flood warning for Kauai until 2:45 p.m. today.

At 11:42 a.m., Emergency Management reports that Kuhio Highway near the Hanalei Bridge remains closed due to flooding. Streams remain elevated across the island and runoff remains high.

Widespread heavy rainfall has eased and rain rates have decreased to 1 inch per hour or less. However, additional heavy rain may redevelop over the island early this afternoon.

The state Health Department has also issued a brown water advisory for the islands of Oahu and Kauai. Heavy rain resulted in stormwater runoff entering coastal waters, officials said. If the water is brown, the public should stay out.

10:30 a.m.

The flash flood warning for the island of Kauai has been extended through 11:45 a.m. today.

Emergency Management reported at 10:06 a.m. that Kuhio Highway near the Hanalei Bridge remains closed due to flooding. Streams remain elevated across the island and runoff remains high.

Forecasters expect periods of heavy rainfall with rates of 1 to 2 inches per hour to continue into the afternoon.

Residents and visitors are warned to stay away from streams, rivers, drainage ditches, and culverts, even if they are currently dry and to not cross fast-flowing or rising waters by vehicle or foot. Landslides are possible in steep terrain.

A flood watch also remains in effect for Niihau, Kauai, and Oahu through this afternoon.

Due to a deepening low pressure system west of the state, forecasters expect an increase in heavy showers and thunderstorms over the western end of the state this afternoon.

This flooding threat will continue today and linger into Wednesday for the western end of the state, but the system is expected to drift away the second half of the week.

Given that soils are already saturated and streams elevated, flash flooding may develop anywhere, especially over the island of Kauai.

A high surf advisory is also is in place for the east facing shores of Kauai, Oahu, Molokai, Maui, and Hawaii island through 8 p.m. Wednesday.

Surf of 7 to 10 feet is expected along these shores, officials said, bringing strong, breaking waves and currents, which will make swimming dangerous.

The state Health Department has issued a brown water advisory for the island of Kauai. Heavy rain resulted in stormwater runoff entering coastal waters, officials said. If the water is brown, the public should stay out.

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