Tropical Storm Karl is expected to become a hurricane as it moves to the west in the Atlantic (by next week) according to:
https://weather.com/storms/hurricane/video/tropical-storm-karl-spins-in-atlantic-2?pl=pl-editor-picks
Another source: http://www.nhc.noaa.gov/refresh/graphics_at2+shtml/025738.shtml?5-daynl
Note: If a storm is expected to dissipate within 5 days, its track will be shorter
https://weather.com/storms/hurricane/video/tropical-storm-karl-spins-in-atlantic-2?pl=pl-editor-picks
Another source: http://www.nhc.noaa.gov/refresh/graphics_at2+shtml/025738.shtml?5-daynl
Note: If a storm is expected to dissipate within 5 days, its track will be shorter