Hurricane Bertha, weakened once again to a Category 1 storm, was causing large swells and high surf on Bermuda beaches Thursday.
Forecasters said it was too soon to tell how much impact the storm might have on the Atlantic island, but predict the hurricane could intensify during the next 24 hours, the National Hurricane Center reports.
Bertha's intensity has fluctuated. At its peak, it was a major Category 3 hurricane with top winds of 120 mph. Its wind speed dropped to 75 mph, barely hurricane strength, before picking up once again and reaching Category 2 intensity late Wednesday, with top sustained winds of 105 mph. 
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All About Hurricanes and Cyclones • National Hurricane Center
