AWR Avoidance MET

A CBCB —Cumulonimbus should be cleared by a minimum of 5,000 ft vertically and 20 nm laterally, to minimize the risk of encountering severe turbulence. Use weather radar for in-flight avoidance or follow the “line of least risk”, but be aware that a large cloud can absorb a great deal of the radar energy which may therefore not penetrate all of the way through the storm. This can give a false impression that there are no CBCB —Cumulonimbus cells beyond the cell immediately ahead of the aircraft.