With improved conditions, I was not surprised to see my little 500mW 10m WSPR beacon has been spotted in the USA this afternoon. KZ3X (5737km) was the first at 1508z. I expect there will be some more.
UPDATE 1545z: We must be on the downward slope of the sunspot cycle now as 1508z was late for a first 10m WSPR spot from the USA. Still, we must be grateful. This time next year, we'd be grateful if 10m opened E-W at all! Some of us can remember winter afternoons when 6m was wide open to the USA! I recall hearing lots of USA stations on 6m with just a fixed wire dipole. Never again in my lifetime, although I expect to hear the USA on 6m some summers via Es.
UPDATE 1600z: PA3ABK/2 (306km) has been spotted a few times already on 472kHz WSPR late this afternoon.
UPDATE 1712z: No further 10m WSPR spots from the USA. KZ3X may have been it for the day.