As usual, 10m opened again to the USA this afternoon. The first USA spot of my 10m 500mW WSPR beacon was by WB1FIG (5304km) at 1300z.
The openings do seem to be getting shorter now. Plenty of USA stations spotting me again on 10m WSPR. 500mW is quite enough on most occasions.
UPDATE 1720z: At the moment, the last USA station to spot me was WG2Z (5600km) at 1634z.
UPDATE 1830z: No further spots on 10m WSPR since 1634z.