A large cyclone near Grace caused the storm to weaken. By this time, the storm was over waters, likely stopping further strengthening. Early on October 6, Grace merged with a weather front over the northeastern Atlantic Ocean. Just before this, the lowest air pressure in the storm was recorded at 986 mbar (hPa; 29.12 inHg). What was left of Grace continued for about 18 hours before dissipating in the Celtic Sea early on October 7. Although the NHC officially called Grace a tropical storm, the French meteorological service said it should not have been called a tropical cyclone. They argued that the formation of Grace was more like a non-tropical storm than a tropical one.