That's the odds, not a reflection of what happened in reality in an individual situation. We had already moved out of the Bay Area when Loma Prieta happened (sp?) but we had a couple of near 6 quakes while we were there from the late 70s to the early 80s and had family living there when the 89 quake hit.
Of course now we live in the Memphis area, 70 miles from the site of the largest earthquakes in contiguous US history. There were three 8 plus quakes from November of 1811 to around February of 1812 with quakes over 5 almost every day during that period. In California it's relatively hard seismic terrain and a quake dissipates quickly, but here it's all "gorpf" where the quake will just propagate forever. And the folks here don't have a clue about earthquake preparedness. In the 1811/1812 events it is said that buildings were damaged in Washington DC and Boston from the quakes on the Mississippi.
Oh joy.
I never knew that.