If I had a week that I knew an earthquake was coming I could plan quite a bit...even leave.
And even if you trusted the warning, would you leave immediately? Considering that the warning was for the next week, ie the quake could come next minute or in six days.
The less frequent earthquakes are the more valuable it would be.
The more risk to your life or property earthquake would have if unprepared would also increase the value.
So it's low value if there's mild earthquakes every week, but really high value if there's few strong earthquakes a year.