( CNN ) -- It 's a double threat . Hurricanes are barreling through the ocean on both sides of the continental United States . Hurricane Gonzalo on Friday slammed the British territory of Bermuda in the North Atlantic Ocean . Hurricane Ana is heading for the Hawaiian Islands and could cause trouble over the weekend . Hurricane warnings were posted on Bermuda as Gonzalo raged through the region . The powerful Category 3 storm battered the island with wind gusts that topped 115 miles per hour , according to the National Hurricane Center in Miami , as it moved in a northeasterly direction at 16 miles per hour . The eye of the storm was forecast to pass over Bermuda late Friday , the agency said . Gonzalo could cause widespread power outages , property damage , dangerous storm surge and major flooding . But the island is ready . `` Bermuda we are prepared , '' said Premier Michael Dunkley . `` Well-rehearsed plans for most contingencies are enacted , and as we hope for the best , we are prepared for the worst . '' Ahead of the storm , Bermuda closed schools , shut down bus and ferry service , and opened up shelters . Forecasters predicted Gonzalo will weaken to as it moves past Bermuda and pushes into the North Atlantic by Saturday . In 2003 , Hurricane Fabian caused more than $ 300 million in damages . It also knocked out power to most of the island . 2014 Atlantic Hurricane Season facts . In the Pacific Ocean , Hawaiians are hunkering down , preparing for the approach of Hurricane Ana . The storm strengthened into a Category 1 storm Friday afternoon with maximum sustained winds of 75 miles per hour , according to the Central Pacific Hurricane Center in Honolulu . A tropical storm watch is posted in some areas , meaning sustained winds of 39 to 73 miles per hour are possible within 48 hours . The storm was about 230 miles south of Hilo late Friday afternoon , the agency posted on its website . Ana is expected to approach the Big Island by Saturday as a Category 1 hurricane , but it 's unlikely to make actual landfall , according to some forecasters . But Gov . Neil Abercrombie is n't taking any chances . Abercrombie declared a state of emergency earlier this week in advance of Ana 's arrival . The emergency proclamation `` allows us to respond quickly to any potential impacts , '' he said . Ana could cause dangerous surf conditions , coastal flooding and mudslides as it moves through the region . Some areas could see up to the 8 inches of rain with as much as 12 inches in isolated areas . Hurricanes are a rare occurrence in Hawaii . Only three storms have made a direct landfall on the islands in the past 55 years , according to the Central Pacific Hurricane Center . But it 's already been an unusual year for Hawaiians , weatherwise . The island chain has already been hit by two damaging tropical storms so far this season . CNN 's Ed Payne contributed to this story .
NEW : Hurricane Gonzalo slams National Hurricane Center with powerful winds , heavy rain , and high surf . NEW : Bermuda says Gonzalo wind gusts top 8 inches . NEW : Hurricane Ana in the the North Atlantic strengthens into 3 storm .