The National Hurricane Center issued the last advisory for Nana, revealing that the system is not producing enough convection to qualify as a tropical cyclone and that it is highly unlikely for it to strengthen back.

On the other hand, all eyes are now on Tropical Depression 15, which according to the latest NHC advisory, is strengthening and is close to forming a tropical storm. The latest satellite images have indicated that the system has kept a steady intensity so far, but it is likely to intensify within the next few days.

The depression appears to be heading southeastward, with winds over the Caribbean which for now remain low. Over the next few days, new developments are likely to cause the cyclone to turn eastward and northeastward, with increasing speeds, NHC informs.

The latest radar images from Curacao indicate that Tropical Depression 15 already brought rain over the Nethelands Antilles, while locally heavy rains are expected to cover parts of the island for the remainder of the day. NHC also warned about the possibility of life-threatening flash-floods on these islands.

The wind speed probabilities over the next days show intensifying wind speeds that could allow the tropical depression to turn into a hurricane by the end of the week. During the next five days, the winds could reach up to 73 mph.

The depression is currently centered over 360 miles southwest of San Juan, Puerto Rico, and 140 miles north of Curacao, and is heading southeast at 3 mph. According to NHC, this speed should intensify by Wednesday.