Imelda strengthens as US coast feels impacts. Bermuda prepares for twin storms

Tropical Storm Imelda is strengthening north of the Bahamas and beginning its hard right turn eastward, sparing the US coast from a direct strike. But the storm is still churning up dangerous surf, rip currents, coastal flooding and beach erosion along the Southeast coast. Meanwhile, Bermuda faces a rare one-two punch from Hurricane Humberto and Imelda this week.