No South America today on 10m JT65

Although there was some Es today on 10m (not much) I was not spotted in South America today. My theory is/was that I needed Es for the first hop or two, then F layer deep into South America.  I wonder what 10m conditions will be like tomorrow? It is now late in the summer so Es will get far less frequent but as we approach the equinox F layer propagation should improve. At the same time solar conditions are now declining.