Post-tropical cyclone

Météo-France classifies systems in the South-West Indian Ocean undergoing an extratropical transition or losing tropical characteristics as "post-tropical depressions", since the 2012–13 cyclone season.

[23] After the initial formation, a post-tropical cyclone has the potential to gain strength and intensity by forming an extratropical storm.

[24] The re-intensification of a post-tropical cyclone can cause dangerous conditions in North Atlantic shipping routes with high seas and winds comparable to those of hurricanes.

[23] The terminology was initiated by Meteorologist Peter Bowyer of the Canadian Hurricane Centre in 1998 during Tropical Storm Bonnie.

[25] In 2008, the National Hurricane Center used this term for Tropical Storm Laura to address the limitation of the two classes (extratropical/remnant low) mentioned above.