I am a time traveller from next week. A massive 9.0 megaquake hit the west coast. I was sent a week back in time with mission to stop it?

I am the only person with Ph.D. In time travel. This is why they sent be back in time. Should I stop the megaquake but people won't believe my time travel story? Or should I let it happen and people will believe me?
What should I do?
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