A Tropical Storm Watch has been issued for Oahu, Maui, Molokai, Lanai, Kahoolawe, and the Big Island.
A tropical storm watch means that tropical storm conditions are possible in the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous.
On the forecast track, Olivia will be approaching the main Hawaiian Islands later Tuesday and Tuesday night.
Maximum sustained winds are near 75 mph (120 km/h) with higher gusts. Little change in strength is forecast during the next 36 hours, with gradual weakening expected afterward.
Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 125 miles (205 km).
The estimated minimum central pressure is 988 mb (29.18 inches).
WIND: Tropical storm conditions are possible within the watch area starting Tuesday.
RAINFALL: Storm total rainfall amounts of 10 to 15 inches, with isolated amounts over 20 inches, are possibile associated with Olivia.
SURF: Large swells generated by Olivia are expected to continue to increase near the main Hawaiian Islands. Surf will to build as Olivia approaches, and may become damaging on some exposed east facing shores Tuesday or Wednesday.