With WSPRnet still struggling, I think I'm going QRT on 10m WSPR and 6m JT65 and QSYing to just 10m JT65 for the rest of the afternoon and evening. Clearly there is Es about on 6m, but on 10m I don't (yet) know.
UPDATE 1806z: A few hours ago I QSYed and am now only on 10m JT65. With German and French stations copying me, there is clearly Es about on the band. Nothing from South America yet. When I eventually managed to access the WSPRnet database I see that I was spotted in Spain, Germany and Sweden on 10m WSPR earlier. As usual. I was using 500mW.
UPDATE 1840z: Several spots of South American stations on 10m JT65 (CE and PY), but no-one there has yet spotted me on 10m JT65.