Any quake in the Japan area can be significant, and.......an 8.0 quake in Mexico certainly can be too!! For sure, and 8.0 quake in Mexico is just "down the coast-line from California!!
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6.1 is nothing special, we had one of those some two weeks ago here in Portugal.
An 8.2 (or 8.4, I've seen the two values) earthquake is much worse, even resulted in a small tsunami. The last information I heard points to 5 dead, one indirectly (a child that was on a ventilator in a hospital and died when the ventilator stopped).