The National Hurricane Center is tracking two hurricanes in the Atlantic: Hurricane Humberto and newly formed Hurricane Imelda.

Hurricane Humberto's swells will probably cause "life-threatening surf and rip current conditions," the National Hurricane Center warned.

The National Hurricane Center's 11 p.m. Tuesday advisory reported that Category 1 Hurricane Humberto is in the Atlantic Ocean, 295 miles west-northwest of Bermuda. Packing maximum sustained winds of 80 mph, the hurricane is tracking to the north at 17 mph.

Imelda also is pelting the coastal area of southeast North Carolina with rain that forecasters say could lead to flooding.

The National Weather Service said a high risk of dangerous rip currents is expected through at least Wednesday.

Imelda strengthened into a hurricane Tuesday morning, Sept. 30, and is expected to bring impacts to the North Carolina coast.

Authorities in the Bahamas have closed a majority of schools following mandatory evacuations for some islands in the archipelago as Tropical Storm Imelda drops heavy rain and unleashes flooding in the northern Caribbean,

Winds up to 40 mph are expected in parts of Massachusetts on Tuesday as Hurricane Humberto "makes its closest approach," to the state, forecasters said.

Tropical Storm Imelda is strengthening and is expected to become a hurricane by Tuesday as it moves off the Southeast coast, kicking up dangerous surf, rip currents, coastal flooding and beach erosion from Florida through the Carolinas.

That's an unlikely outcome, said CBS News meteorologist Nikki Nolan. But if such a collision does occur, it could produce what's called the Fujiwhara effect, a rare phenomenon in which two different storms merge and become entangled around a newly formed, common center.

Five unoccupied homes have collapsed and been swept into the Atlantic Ocean along North Carolina's Outer Banks Tuesday as powerful waves from hurricanes Humberto and Imelda slam the southeastern coast.