Tropical Storm Sara could strengthen some in the next few days if it remains over water, off the coast of Honduras. The storm is expected to move west-northwestward by late Saturday, forecasters

Tropical depression 19 officially formed Thursday morning, and now sits less than 90 miles away from the Nicaragua/Honduras coastline, prompting hurricane and tropical storm watches and warnings for those countries.

The NHC said Wednesday it is tracking a tropical wave in the Caribbean Sea that could become a tropical depression by the end of the week.