After rapidly intensifying into a Category 5 storm on Saturday, Hurricane Erin has since been downgraded to a Category 4 system with sustained winds of 130 mph. However, it is expected to intensify and grow in size over the next few days.

The Tropical Storm Watch is extended northward along the U.S. Atlantic coast, and now stretches from Duck to Chincoteague. A Tropical Storm Warning is in effect south of Duck, to Beaufort Inlet, including the Pamlico and Albemarle Sounds.

Rip currents are the third leading cause of deaths from hurricanes, and they can happen on a sunny day hundreds of miles from the storm.

Although the storm is expected to stay offshore, it will produce dangerous surf conditions for much of the Atlantic Coast this week, forecasters say.

Hurricane Erin could 'at least double or triple in size' next week and the track has shifted south, but remains likely to turn away from the East Coast.

Hurricane Erin, a powerful Category 4 storm in the Caribbean, was forecast not to hit land, but brought dangerous waves to the U.S. East Coast.

For now, most reliable computer models that meteorologists use show Erin curving away from the United States, spinning off the East Coast later in August.

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According to AccuWeather, Hurricane Erin is expected to strengthen rapidly over the weekend, and could intensify into a major Category 4 storm.