According to the glossary of meteorology a tornado is defined as "a violently rotating column of air, pendant from a cumuliform cloud or underneath a cumuliform cloud, and often (but not always) visible as a funnel cloud."
In meteorological terms the vortex described above must connect to both the ground and the cloud base to be considered a tornado.
Definicion of Ground fault Circuit Interrupter.
A particular kind of matter with uniform properties
lente ocular
foundation of control
esencial source:http://www.wordreference.com/definicion/esencial
quien invento el televisor
A tornado is considered a tornado when it reaches the ground
No, a haboob is not a tornado.
A tornado becomes a tornado when the circulation reaches the ground.
A tornado watch is a watch that is watching out for tornadoes. A tornado warning is a warning That lets you know that a tornado is spotted.
tornado in Portuguese is tornado too
A tornado alarm or tornado siren is a loud siren found in some tornado prone areas that sounds when a tornado warning is issued.