Hurricane Maria
On September 12, originated from a tropical wave that left the west coast of Africa. It then began to develop and become more organized moving westward. On September 16, it became a tropical depression and was 580 miles (930 km) east of Barbados. The storm quickly became more tropical. It became a tropical storm the same day in 84 °F (29 °C) waters, in favorable conditions of the 80 °F (26.5 °C) that tropical storms usually require.