Thunder Spirits happened in 1991.
Thunder Blade happened in 1987.
Arctic Thunder happened in 2001.
Thunder Force VI happened in 2008.
Anywhere in the world.
Not usually. Snowstorms that produce thunder and lightning are fairly rare, but they do happen.
Thunder Spirits was created on 1991-12-27.
Offroad Thunder happened in 1999.
Hydro Thunder happened in 1999.
Lords of Thunder happened in 1993.
Gate of Thunder happened in 1992.
Arctic Thunder happened in 2001.
Thunder Blade happened in 1987.
Super Robot Spirits happened in 1998.
The Space Sheriff Spirits happened in 2006.
Bangai-O Spirits happened in 2008.
Pro Yakyū Spirits happened in 360.
Thunder is made by Hephaestos, for Zeus.