On October 5, a storm now known as the 2005 Azores subtropical storm was absorbed by another low pressure area. It then began to develop and become more organized. It became a subtropical cyclone early on October 8. The storm was 580 miles (930 km) southeast of Lajes in the Azores. The National Hurricane Center (NHC) did not name the system Vince at the time, because the waters here were thought to be too cold for tropical or subtropical cyclones to exist. The storm slowly became more tropical, with a warm center. It became a tropical storm the next day in water cooler than 24 °C (75 °F), colder than the 26.5 °C (80 °F) usually needed for tropical storms.