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At 11 a.m. HST (2100 UTC), the center of Hurricane Miriam was located near latitude 15.7 North, longitude 141.6 West about 930 miles (1,495 km) east-southeast from Hilo. A turn toward the north is expected later today.

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At 5 p.m. HST (0300 UTC), the center of Hurricane Miriam was located near latitude 14.4 North, longitude 140.6 West about 1,025 miles (1,650 km) east-southeast from Hilo. Miriam is moving toward the west near 8 mph (13 km/h). A turn toward the northwest with a decrease in forward speed is expected tonight.

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The National Weather Service in Honolulu has issued a Flash Flood Watch for all Hawaiian Island through Tuesday afternoon (Aug 28). Trailing deep tropical moisture left over from Lane will bring the potential for additionally heavy rainfall through Tuesday. Any additional heavy rainfall over these already highly saturated grounds could quickly lead to flash flooding.

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According to the National Weather Service in Honolulu, only one other category 5 hurricane in database records passed within 560 kilometers (350 miles) of Hawaii.

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Flash Flood Warning for Hawaii Island extended until 11 p.m. HST Saturday, August 25, 2018. At 7:27 p.m. HST, radar and rain gauges showed persistent heavy rain over the lower Puna District. The most intense rainfall of 2 to 4 inches per hour was around Pahoa and Hawaiian Beaches, extending along Highway 130 toward Hawaiian […]

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At 9:15 p.m. HST, weather radar and rain gauges continue to show areas of heavy rain along the windward and southeast sections of Hawaii Island, with the heaviest rains focusing upslope of Hilo in the Wailuku River valley, and along the slopes of Hamakua coast from Laupahoehoe to Honokaa.

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This is a Civil Defense Hazardous Weather Message for Friday, April 27 at 1 p.m. The National Weather Service forecasts heavy rain, flash flooding, high surf, and possible thunderstorms for Hawaii Island starting Saturday (April 28). Be aware of rising waters, ponding on roadways, and dangerous surf conditions.

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The National Weather Service in Honolulu has issued a Flash Flood Watch for the entire state of Hawaii from Thursday morning (April 19) through 6 p.m. Friday (April 20). The remnants of an old front lingering across the state in combination with an upper-level trough moving overhead will bring the threat for heavy rainfall and […]

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The National Weather Service in Honolulu has issued a Flash Flood Watch for the entire state of Hawaii from Thursday morning (April 19) through Friday afternoon. Deep moisture associated with an old frontal boundary lingering across the state in combination with an upper-level trough moving through the area, will bring the threat for heavy rainfall […]

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A High Surf Advisory remains in effect for east facing shores of North Kohala, Hamakua, North and South Hilo, Puna and Ka‘u remains in effect through tonight. Beachgoers, swimmers, and surfers should heed the advice given by ocean safety officials and be careful. Know your limits and when in doubt, don’t go out. Boaters should […]

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This is a Civil Defense Flash Flood Watch update for Sunday, April 15 at 4 p.m. The National Weather Service has discontinued the Flood Watch for the Island of Hawaii. A Flood Advisory is still in effect for East Hawaii.

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The National Weather Service has issued a flood advisory for Hawaii Island. Very heavy rain and thunderstorms from Waimea up to Saddle Road Junction and down through South Kona are occurring at this time. In addition, a High Surf Advisory is now in effect for North Kohala, Hamakua, Hilo, and Puna.

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The National Weather Service has canceled the flood advisory for the Island of Hawaii. Motorists should continue exercise caution and to be aware that heavy showers and runoff are still possible over the entire island. All roads are open at this time.

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The NOAA National Severe Storms Laboratory is collecting public weather reports through a free app available for smart phones or mobile devices.

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