it was about 8.0.
I would say a big earthquake is 4.0 or bigger
The earthquakes will be 90%-81% of the largest 40,000km long.
I hear that earthquakes can be larger than 13.5! Japan had (not to long ago) 9.0! And then a smaller 6.5 earthquake appeared like 3 weeks later. How long will this last?
up to at least 8 average9.5 was the biggest
There is no theoretical limit, however in practice the largest earthquake ever recorded has had a magnitude of 9.5.