Black squall is a term that refers to a sudden and violent storm that appears out of nowhere. It is a term commonly used in maritime language to describe extreme weather conditions at sea. However, there are several other phrases that can be used as synonyms for black squall, such as tempest, storm, hurricane, typhoon, and cyclone. These terms are often used interchangeably and can refer to intense weather systems that can cause damage and destruction. In general, seeking shelter and taking precautions during a black squall or any other extreme weather condition is essential for anyone who is on the ocean or in its vicinity.