MIAMI (CBSMiami) – Humberto, the first hurricane of the 2013 season, weakened to a post tropical storm cyclone.

At 11:00 a.m., the center of the system was about 980 miles northwest of the Cape Verde Islands.

Post Tropical Cyclone Humberto’s maximum sustained winds were 40 mph and it was moving to the west-northweset near 13 mph.

There are no watches or warnings posted for this storm.

National Weather Service believes it’s possible that Humberto will re-strengthen back into a tropical depression or a tropical storm on Sunday or Monday when the system turns northward over the open Atlantic.