FoxNews is now saying the quake magnitude has been elevated from 8.9 to 9.0.
Mr. Prairie was explaining to me that the Richter scale is logarithmic based so a move from 8.9 to 9.0 is much more significant than 4.9 to 5.0 for instance.
I had heard that at one point some years ago but had forgotten. Thanks for that reminder. Mr. Prairie sounds very smart :-)