Crew members aboard dozens of ships in the Gulf of Mexico prepared Thursday to evacuate as a tropical rainstorm brewing in the Caribbean brought the deep-sea effort to plug BP's ruptured oil well to a near standstill.

Though the rough weather was hundreds of miles from the spill site and wouldn't enter the Gulf for at least a few more days, officials ordered technicians trying to plug BP's well to stand down because they needed several days to clear the area, where about 65 ships are tending to the spill.