The National Hurricane Center is tracking two weather systems in the Atlantic Ocean – neither of which pose immediate risk to the United States – while Henriette and Ivo wax and wane in the Pacific Ocean.

Tropical Storm Henriette has rapidly strengthened into a hurricane in the central Pacific Ocean with further strengthening expected but poses no threat to land. The Miami-based National

Henriette regained tropical storm strength in the Pacific Ocean well east of Hawaii on Saturday, but forecasters said it was still not expected to pose a threat to land.