Tropical Storm Melissa is expected to rapidly intensify over the weekend into a Category 4 hurricane, according to the National Hurricane Center. The slow-moving storm is forecast to bring "life-threatening and catastrophic flash flooding and landslides to southern Hispaniola and Jamaica through the weekend.

What was once a very powerful storm has now weakened into scraps. As of Friday morning, Melissa has officially become a post-tropical storm, meaning that there are no longer any active storms around the Atlantic Ocean.

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.

Tropical Storm Melissa is likely to undergo rapid intensification and grow into a powerful Category 4 hurricane.

At 11 a.m. Saturday, the National Hurricane Center issued an advisory stating that Tropical Storm Melissa is in the Caribbean Sea, 155 miles southeast of Kingston Jamaica and 235 miles southwest of Port Au Prince Haiti. The system, with maximum sustained winds of 70 mph, is moving west-northwest at 1 mph.

Tropical Storm Melissa is expected to strengthen into a hurricane, threatening the northern Caribbean with massive rainfall and life-threatening flooding

Melissa is currently the only active tropical system in the Atlantic basin. As of Friday night, the storm remains nearly stationary, drifting north at just 2 mph. Maximum sustained winds are around 65 mph—just below the 75 mph threshold needed to reach Category 1 hurricane status.

The strengthening storm is most likely to approach Jamaica and/or Hispaniola late this week. In the days that follow from there, the potential path for the storm remains uncertain, and troubling.

Melissa’s 10-day run as a tropical cyclone – culminating in a catastrophic Category 5 strike on western Jamaica Tuesday – will end Friday as it transitions into a powerful non-tropical storm, clipping Atlantic Canada’s southern Avalon Peninsula tonight before heading swiftly out to sea.