Clock ticking for the Southeast as next tropical threat organizes, with U.S. impacts likely by Monday

More tropical trouble is brewing in the Atlantic Ocean, with the National Hurricane Center now on high alert for the formation of a new storm that will join Tropical Storm Humberto. But unlike Humberto, this one could go on to directly impact the United States.

​ More tropical trouble is brewing in the Atlantic Ocean, with the National Hurricane Center now on high alert for the formation of a new storm that will join Tropical Storm Humberto. But unlike Humberto, this one could go on to directly impact the United States. Read More Breaking News, Latest News and Videos | CNN