Thunderstorms is an severe weather that generates lightning and thunder. Also, It produce heavy winds, heavy rain and hail. Thunderstorms are caused by warm, unstable air.
Thunderstorms forms when warm, humid (wet) air rises. Thunderstorm Formation has three stages which is: Cumulus Stage, Mature Stage and Dissipating Stage.
Tornadoes is a violent windstorms that form a vortex. A rotating column of air that comes from a very large cloud ( called cumulonimbus cloud )
Thunderstorms starts with warm air and Warm air begins to rotate (called a mesocyclone) The air begins to roll creating the vortex and that makes a Tornado
Hurricanes is the most violent storms on Earth (winds at least 119 km per hour) ( 70 miles per hour) Also, Hurricanes get strength from the water in the ocean.
Hurricanes form with warm water temperatures that create warm/moist air. It begins with a bunch of thunderstorms, Warm air from storms moves to center and rises creating clouds, Clouds from the ring ( eyewall ), The ring spins and grows, The storm dies once it goes far into land.