Hurricane Florence: 'This One Really Scares Me,' Forecaster Says

Update at 2 p.m. ET

Hurricane Florence, a Category 4 storm, "is expected to be an extremely dangerous major hurricane through landfall" on Thursday or Friday and has triggered a hurricane watch for all of North Carolina and part of South Carolina, according to the National Hurricane Center.

"Let me tell you, this one really scares me," National Hurricane Center Director Ken Graham said. Citing his 24 years in the National Weather Service, Graham added, "It's one of those situations, you're going to get heavy rain, catastrophic life-threatening storm surge ... and also the wind. Now's the time to prepare."

Florence is packing maximum sustained winds of 130 mph,. Its hurricane-force winds extend up to 60 miles from the storm's center.