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Flash flood watch for Hawaii island until midnight

Weather advisory map via National Weather Service/NOAA

Weather advisory map via National Weather Service/NOAA


Hawaii County Civil Defense 6 p.m. update on the flash flood conditions

UPDATED (9:08 p.m. on 9/4/2015)

Police report: Hualalai Road at the intersection of Hienaloli Road (aka Guava Lane) in Kailua-Kona is now open, proceed with caution.

The flash flood warning has been replaced with a flash flood watch until midnight tonight.

A very moist and unstable air mass will continue to produce locally heavy showers and thunderstorms this evening. Saturated soils from recent and current rainfall across the state will increase the risk for flash flooding.

UPDATED (6:28 p.m. on 9/4/2015)

The Hawaii Police Department reports that Hwy 11 between the 103mm and 108mm is now open. Proceed with caution due to wet conditions.

Hualalai Road remains closed between Queen Kaahumanu Highway and Hienaloli Road due to flooding.

The National Weather Service in Honolulu has extended the flash flood warning for Hawaii Island until 9 p.m.

At 5:39 p.m. weather radar showed heavy rain from Kailua-Kona to Keauhou. This area of heavy rain was moving southeast slowly.

Other locations in the warning include, but are not limited to, Kailua-Kona, Keauhou, Captain Cook and Honaunau.

This warning may be extended beyond 9 p.m. should flash flooding persist.

Campers and hikers should avoid low lying flood prone areas. People should stay away from streams, drainage ditches and low lying areas prone to flooding. The rainfall and runoff will cause hazardous driving conditions due to ponding, reduced visibility and poor braking action. Excessive runoff may cause rockslides and mudslides in steep terrain.

Do not cross fast flowing or rising water in your vehicle or on foot. Turn around, don’t drown.

For links to the latest weather forecasts, reports, radar and satellite imagery visit our Weather Page at hawaii247.com/weather

Original post at 4:27 p.m.

The National Weather Service in Honolulu has issued a flash flood warning for Hawaii Island until 6 p.m. tonight (Sept 4).

At 2:58 p.m. weather radar showed heavy rain along a line extending from 8 miles northeast of Kailua-Kona to Honaunau. The area of heavy rain was nearly stationary. Rainfall rates of up to 3 inches per hour are possible.

The Hawaii Police Department is reporting a road closure at Highway 11 near the 103 mile marker in Honaunau due to heavy ponding. Hualalai road at the intersection of Guava lane is also closed due to heavy pounding and run offs in Kailua-Kona. The traffic lights at Kealakaa Street and Palani road is flashing red. Kuakini Hwy and Oni Oni is also flooding and will be closing as officers arrive. Crews will be responding to these locations, motorist are being asked to take alternate routes, avoid these locations and use extreme caution.

Other locations in the warning include, but are not limited to, Kailua-Kona, Four Seasons Resort Hualalai, Keauhou, and Captain Cook.

Campers and hikers should avoid low lying flood prone areas. People should stay away from streams, drainage ditches and low lying areas prone to flooding. The rainfall and runoff will cause hazardous driving conditions due to ponding, reduced visibility and poor braking action. Excessive runoff may cause rockslides and mudslides in steep terrain.

Do not cross fast flowing or rising water in your vehicle or on foot. Turn around, don’t drown.

For links to the latest weather forecasts, reports, radar and satellite imagery visit our Weather Page at hawaii247.com/weather

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