Planetary alignment
Once again I would like to state that there will be NO planetary alignment earthquake. Planetary alignments do not cause gravitational disturbances on Earth, I know it may all sound plausible but as reality has it, planets are so small (when compared to the sun) and so distant (when compared to the moon) that expecting them to trigger an earthquake when they line up is the same as being afraid of having the wind off the wings of a sparrow flying on the opposite side of a stadium blowing your popcorn over. It won't happen, NO WAY, a freight train traveling through Sacramento valley would have a bigger chance of shaking California into the ocean than any planetary alignment. Don't lose a moment of sleep over this.