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Flash flood warning for Hawaii Island due to heavy rains

Weather advisory map via National Weather Service/NOAA

Weather advisory map via National Weather Service/NOAA

UPDATED (5:48 p.m. on 9/6/2015)

The National Weather Service in Honolulu has issued a flash flood warning for Hawaii Island until 7:15 p.m. Sunday (Sept 6).

At 4:21 p.m. weather radar showed an area of heavy rain seven miles north of Kailua-Kona that was nearly stationary. The radar indicated rainfall rates of up to 3 inches per hour are possible. The heaviest rain was located along Mamalahoa Highway (Hwy 190) between Holualoa and Puuanahulu.

Other locations in the warning include, but are not limited to, Waikoloa Beach Resort, Four Seasons Hualalai, Keahole Point and Puuanahulu.

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 publish 3:45 p.m. 9/6/15

The National Weather Service in Honolulu has issued a flood advisory for Hawaii Island until 5:30 p.m. Sunday (Sept 6).

At 2:20 p.m. weather radar showed an area of heavy rain upslope from Kailua-Kona that was nearly stationary. Another area of heavy rain was located between Hilo and Mountain View moving northeast at less than 10 mph. Rain gages measured rainfall rates from 1-3 inches per hour. At 3:40 p.m. rain was coming down heavily in the Hilo area.

Other locations in the advisory include, but are not limited to, Kailua-Kona, Keauhou, Honaunau, Hilo, Keaau and Mountain View.

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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