Millions of Americans are being warned as new storm models predict a major spike in Atlantic hurricane activity starting September 17. After an unusually quiet peak of hurricane season, powerful tropical waves are now forming off the coast of Africa — and they could quickly become dangerous storms.<br /><br />Experts say this calm may be the "eye before the storm," with tropical systems expected to track west toward the Caribbean, Gulf of Mexico, and possibly the U.S. East Coast.<br /><br />Find out why meteorologists are closely watching the days ahead and what it means for those living in hurricane-prone areas.<br />WooGlobe Ref : WGA761133<br />For licensing and to use this video, please email licensing@wooglobe.com