With Afan there were a lot of trails closed and diversions before the storm, the NRW website will tell you what these are. I wouldn’t bother doing Y Wal with the current diversions as you’ll spend most of your day grinding up and down fire roads.
I’ve heard Bluescar is clear but no idea about the rest of it.
The Masts didn’t fare particularly well after Storm Bert (but were ridable), I don’t know anyone who’s been daft enough to go up there since the weekend so it’s probably even worse. If you’re on FB you could try posting on the Afan and Glyncorrwg group (link) in case there’s someone with more up to date info!
No point going west (Brechfa) as it’s been flattened and NRW have closed the entire forest.
If you want to go a bit further east I’ve heard that Cwmcarn is mostly clear and running really well.
I’ll be at BPW Fri-Sun, either on a black S-Works Kenevo SL or a white Commencal FRS — feel free to say hi!