Hurricane Hector has weakened slightly as it continues its path across the central pacific. Hector is about 360 miles southeast of Hilo moving west at 16 mph.
Hurricane-force winds will extend outward up to 40 miles (65km) from the centre and tropical-storm-force winds will extend up to 115 miles (185km). Tropical storm conditions are expected across portions of the Big Island later today as the core of Hector passes to the south.
NOAA's Central Pacific Hurricane Center (CPHC) noted today, August 8 that a Tropical Storm Warning is in effect for Hawaii County.
Maximum sustained winds are near 125 miles per hour (205 kph) with higher gusts.
Hawaii County officials are urging residents to secure loose items and be prepared for changing conditions and a tropical storm warning has been issued by the state.
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On the five-point Saffir-Simpson scale, a Category Five storm is the most risky, with winds exceeding 156 miles per hour (251 kph). Slight weakening is forecast during the next couple of days.
The NHC said tropical-storm-force winds will extend up to 115mph and the "far northern fringes of the hurricane will brush the Big Island on Wednesday".
If the storm deviates northwards it could bring Hector close enough to impact the Big Island directly.
According to Hawaii News Now, a high surf warning has been issued for east-facing shores of Hawaii Island for 12-13 foot waves and for east-facing shores of Maui for six to 10 feet surf in effect from 6 pm Wednesday.