While no landmasses will be threatened this week, one scenario takes Florence close to Bermuda to start the second full week of September. "Florence will continue to move in a general west to northwest motion across the open waters of the eastern Atlantic Ocean into midweek," said AccuWeather Senior Meteorologist Rob Miller. Miller noted that Florence is moving over slightly cooler water. Wind shear is also expected to increase further along Florence’s path, preventing it from undergoing significant strengthening. Wind shear is the changing of speed and direction of winds at different layers of the atmosphere. Strong wind shear can shred apart mature tropical storms or hurricanes.