The Black Sea has, on occasion, produced or fueled storms that begin cyclonic rotation, and that appear to be similar to cyclones seen in the Mediterranean.
2.
Note regions of cyclonic rotation ( C ) and anticyclonic rotation ( A ); both regions, especially C, are capable of supporting tornado development in some cases.
3.
Similarly, as rapidly rotating air flows radially outward near the tropopause, its cyclonic rotation decreases and ultimately changes sign at large enough radius, resulting in an upper-level anti-cyclone.