Forecasters say Hurricane Bertha has weakened to a Category 1 storm as it heads toward Bermuda, but could re-strengthen in the next 24 hours.

Forecasters have been urging people on the island to monitor the storm's progress. They say Bertha has started producing large swells and high surf there.

It's still unknown if or when the hurricane will make landfall.

As of about 11 a.m. on Thursday, the center of the storm was about 485 miles southeast of Bermuda.

Maximum sustained winds are about 90 mph with some higher gusting.

The Atlantic season's first hurricane is traveling northwest at about 9 mph. It's expected to turn and slow down in the next couple of days.

Click here for maps, forecasts and satellite images at the National Hurricane Center