On November 19, a broad area of eastward-moving low pressure formed in the central Atlantic Ocean about 1400 miles (2200 km) southwest of the Azores. It moved steadily eastward through November 20, but on November 21, under the influence of a cold front to its north, the low turned northeastward and started to develop central convection. On November 22, the non-tropical low pressure system began to gain some tropical characteristics, and its northward motion slowed to a stop. Late that afternoon, the low transitioned into a subtropical storm while stalled about 800 mi (1,300 km) west-southwest of the Azores. Operationally, the National Hurricane Center considered that the storm had already gained enough tropical characteristics to be classified as a tropical storm, but in post-storm analysis, this was reconsidered.