California earthquake warning: 6.3 magnitude quake rocks US East Coast amid Big One fears A MASSIVE 6.3 magnitude earthquake has struck off the coast of California as the Ring of Fire continues to show signs of increased activity. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:‘Freedom Gas,’ the Next American ExportNASA black hole SHOCK: What happens when two supermassive black holes COLLIDE?Life on Mars? Ethiopian volcano microbe find shows life could have THRIVED on MarsNeptune DISCOVERY: Nightmarish ’Forbidden Planet' FOUND in hellish ‘Neptunian Desert’SpaceX explosion hailed as a ‘gift’ by NASA as investigation into Crew Dragon continuesNASA reveals how objects travel at the speed of light in STUNNING new image