Literally, in order for a vortex to be classified as a tornado, it must be in contact with the ground and the cloud base. Weather scientists haven't found it so simple in practice, however, to classify and define tornadoes (per this essay by Doswell).
Bikini Island, 2015. Credit: Emlyn Hughes. (Phys.org)âA team of researchers from Columbia University in New York has found that all of the Marshall Islands involved in nuclear tests by the U.S. are now habitable, except for Bikini Atoll.
The Bikini Atoll is located in the Micronesian Islands in the Pacific Ocean. There are 23 islands surrounding a deep lagoon. The Bikini Atoll is significant due to its being â¦ the site of nuclear bomb testing.