A low-pressure system moved over Puerto Rico on Friday and is expected to veer northeast away from the U.S. East Coast but still has an 80 percent chance of forming into a tropical storm in the next five days, the National Hurricane Center (NHC) said. "There's a good chance that this system could develop into a (tropical) depression within the next 48 hours," said David Roberts, a Navy hurricane specialist with the NHC. The storm is expected to lose intensity as it crosses the mountains of Hispaniola, drenching the Dominican Republic and Haiti before regaining strength over open water near the Bahamas, forecasters say. Despite the northeast shift forecasters said it was too early to declare Florida would be bypassed.