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Heavy snow with accumulations in excess of 6-12 inches is possible on summits. There is also the potential for sleet and also ice accumulations on summit roadways.

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A Flash Flood Watch is in effect for Hawaii Island through Wednesday afternoon (Oct 5). The combination of abundant moisture and an upper level disturbance could trigger heavy rains and thunderstorms through Wednesday. Campers and hikers should avoid low lying flood prone areas. People should stay away from streams, drainage ditches and low lying areas […]

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The National Weather Service in Honolulu has issued a Flash Flood Watch for Hawaii Island through Tuesday (Oct 5) afternoon. The combination of abundant moisture and an upper level disturbance could trigger heavy rains and thunderstorms from this morning through Tuesday.

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A Flash Flood Watch remains in effect for Hawaii Island through Friday afternoon (Sept 16). A very moist and unstable air mass interacting with an upper level trough will result in unsettled weather with the potential for flash flooding.

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A Flash Flood Watch is in effect through Thursday afternoon (Sept 15) for Hawaii Island. A very moist and unstable air mass interacting with an upper level trough will result in unsettled weather with the potential for flash flooding.

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The National Weather Service in Honolulu has issued a Flash Flood Watch for Kona, Ka‘u, North and East Kohala along with interior portions of Hawaii Island through Thursday afternoon (Sept 15). This watch is also for Maui County.

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The National Weather Service in Honolulu has issued a Flash Flood Watch for Hawaii Island on Wednesday and Thursday. Large and damaging surf is possible along east facing shores. Surf is expected to build to 10 to 18 feet on Tuesday and to 15 to 25 feet on Wednesday and Wednesday night.

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The Flash Flood Watch remains in effect through this afternoon of Wednesday (Aug 24). Deep tropical moisture will continue to produce heavy downpours and a chance of thunderstorms through late this afternoon. With streams remaining elevated and the ground already saturated from recent heavy rains in many areas there will be an elevated risk for […]

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The National Weather Service in Honolulu has cancelled the Flash Flood Watch for Hawaii County. At 6 a.m. Hawaii County Police report Mamalahoa Highway (Route 11) at Kawa Flats is fully open to traffic.

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The National Weather Service in Honolulu has issued a flash flood watch for Hawaii Island through this afternoon. An upper level trough over the state will create instability that will interact with the daytime heating and moisture. Heavy showers and thunderstorms capable of producing flash flooding will be possible today as a result.

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Tropical Storm Niala is moving farther away from Hawaii Island and the system is weakening. Strong trade winds will still bring high surf to Hawaii Island.

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Tropical Storm Niala is moving farther away from Hawaii Island and the system is weakening. Strong trade winds will still bring rain and surf to Hawaii Island.

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A flash flood watch is in effect for Hawaii Island through tonight (Sept 27). Rain from Tropical Storm Niala will spread across Hawaii Island with the eastern and southern slopes seeing the heaviest rainfall.

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Rainfall amounts of 2-8 inches are forecast with isolated maximum amounts up to 12 inches on Hawaii Island this weekend.

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