NWS: Severe weather system could dump up to a foot of rain over Hawaii Island, Maui County

HONOLULU (HawaiiNewsNow) - A flood watch has been issued for all islands ahead of possible heavy rainfall, high winds and significant flooding from Thursday into the weekend.

The National Weather Service said the flood watch will be in effect through 6 p.m. Saturday but may be extended for some parts of the state.

Hawaii Island and Maui County face the greatest threat from the unstable weather.

That’s why HNN has issued a First Alert Weather Day for Hawaii Island and Maui County starting Thursday into Friday.

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A flood watch means that conditions will be present for flash flooding that could threaten life and property. Forecasters say you should be prepared to take quick action if a flash flood warning is issued for your area.

Weather models suggest Hawaii Island could see up to a foot of rain from the system, especially the Hilo, Puna and Kau districts.

Maui County could see 4 to 11 inches of rain. It’s not yet clear how much rain Oahu and Kauai could get.

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National Weather Service forecasters say a large swath of moist tropical air will remain over Hawaii for the next several days.

“Heavy rainfall rates for an extended amount of time are expected to result in flash flooding, particularly over already saturated areas,” the National Weather Service said, in a hydrologic outlook statement.

There could also be significant flooding from overflowing streams and drainages. The flooding could close roads, while runoff could cause property damage. Landslides could also be possible in steep terrain.

Please check back for updates on this developing severe weather story.

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