NASA Satellite Spies Hurricane Joaquin Replacing an Eye

Hurricane Joaquin, a Category 4 storm that is currently battering the central Bahamas, appears to be replacing its eye, according to weather forecasters. New satellite views of the intense hurricane appear to show the storm's eye obscured, which could indicate that a new eye is forming around the old one, NASA said. This process, known as eyewall replacement, occurs naturally in powerful tropical cyclones.