Observations of a Quasi-Tropical Cyclone over the Black Sea

V. V. Efimov, S. V. Stanichnyi, M. V. Shokurov, and D. A. Yarovaya

A rare atmospheric phenomenon in the Black Sea region is described: a mesoscale cyclone with all main properties of tropical cyclones. The cyclone developed in the southwestern part of the sea and existed for about five days. General characteristics of the cyclone are presented along with its effect on thermodynamic structure of the sea upper layer.