By CBSMiami.com Team

MIAMI (CBSMiami) – Small but ferocious Hurricane Sam strengthens some more. It’s expected to remain a major hurricane for several days.

Sam is moving toward the northwest near 7 mph and this motion is expected to continue for the next few days, along with a gradual increase in forward speed commencing by midweek.

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Maximum sustained winds have increased to near 150 mph with higher gusts.

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Sam is a Category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale.

Some fluctuations in intensity are expected during the next couple of days.  Thereafter, some slow weakening is forecast.

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Hurricane-force winds extend outward up to 30 miles from the center and tropical-storm-force winds extend outward up to 90 miles.

CBSMiami.com Team