But what about the 1967 Caraguatatuba Mudslide in Sao Paulo, Brazil that killed 437 people?
Doing a cursory check with Duck Duck Go it seems that Brazil has had a lot of mudslides over the years. It also seems that a lot of Brazilians have moved into the area where these mudslides occur.
One more thing...how diligent do you think Brazilian record keeping has been over the last century? Certainly they have been meticulous in recent years as every greenie on the planet is throwing money at them with every report of an insect found to be on the edge of extinction. But back when Brazil was actively trying to grow and industrialize, do you think they gave a rat’s rear end what the rainfall was in a particular area? Or if a mudslide happened, but there was little to no loss of life?
Now I think of it, California used to have lots of mud slides back in the 1960s!
I remember a movie, HOW TO COMMIT MARRIAGE(1969) in which Bob Hope and Jackie Gleason ended up up to their necks in a mud slide.