a pair of massive earthquakes rocking southern california back-to-back days, sparking fires, rattling homes and stores as many caught in the violent shaking ran to escape. >> my daughter said it won't stop trembling. >> first came the magnitude 6.4 followed by an even more powerful 7.1 earthquake. if the epicenter near the city of ridgecrest. the shaking felt from los angeles to as far north as sacramento from as far east as phoenix, and to the south in mexico. it's the strongest seismic activity to hit the area in two decades. >> this is the scene where watching play out all over the heart in california. roads closed due to these powerful earthquakes. you can see this crack in the road extends over two lanes of traffic and several feet in the situation might only get worse as the aftershocks continue. >> those aftershocks now it more than 3,000 and counting, our only reawakening fears. >> ptsd is a real thing. we are all suffering from it