A tropical storm watch was put into effect Sunday for most of Hawaii as Hurricane Olivia continued its march westward toward the islands.
Heavy rains and strong winds could be felt in Hawaii as early as Tuesday night, forecasters warn.
The tropical storm watch is in effect for Oahu, Maui County, and Hawaii County. A watch means residents should prepare for severe weather conditions within 48 hours.
At 11 p.m. Sunday, forecasters said Olivia remained a Category 1 hurricane but had intensified over the last six hours, with sustained winds of 85 miles per hour.
By Tuesday, Olivia is forecast to be a strong tropical storm off the Big Island.