Despite changes in intensity, Erin’s size will drive dangerous surf and massive seas along much of the United States East Coast, as well as Atlantic Canada and Bermuda waters.

Hurricane Erin is causing dangerous swimming conditions along the East Coast even as the strength of the storm weakened.

Hurricane Erin was taking aim at the U.S. East Coast on Tuesday evening, according to forecasters who are warning Americans of life-threatening rip currents along beaches that could persist for days.