The NHC named the system Tropical Storm Arthur early on May 17 because people on an airplane had measured the wind. They said it was strong enough to be named. Arthur mostly moved north and in the Atlantic Ocean, not too close to the Florida and Georgia. However, Arthur started moving northeast over colder waters. Even though Arthur was moving over cold water, it still became stronger, even though it was smaller in images. As Arthur became stronger, its center moved onto the coast of North Carolina, a few miles southeast of Cape Hatteras. Then Arthur moved away from North and South Carolina, and it started to be less organized. However, the storm continued to become stronger. Early on May 19, Arthur had its lowest air pressure of and its winds were strongest at 60 mph (95 km/h). Six hours later, the storm was no longer tropical. Arthur finally dissipated on May 21, 5 days after it became a depression.