Tropical Storms Karina and Lowell formed Thursday in the Pacific Ocean, both of which were expected to become hurricanes in the next few days, the National Hurricane Center said.
Tropical Storm Bertha has strengthened in the Gulf of Mexico and is moving toward the Florida Panhandle and Alabama, causing a tropical storm warning and storm surge watches.
Tropical Storm Arthur has formed in the Gulf near the middle Texas coast, according to the National Weather Service.
Tropical Storm Amanda is located almost 1,500 miles west-southwest of the southern tip of the Baja California peninsula of Mexico.
Melissa has strengthened into a major hurricane.
Tropical Storm Melissa is nearly stationary in the central Caribbean, with forecasters warning it could soon strengthen and brush past Jamaica as a powerful hurricane