Dorsal Arete and Boomerang Arete..
There has been plenty of fresh snow, some of which has fallen under high winds resulting in significant accumulations of windslab and a correspondingly high avalanche risk. The harder mixed buttress routes are likely to be in good condition in many locations, assuming that you approach them.
With strong winds swinging around to the North West we could be looking at good "route building" conditions on Ben Nevis. Keep your eye on the SAIS reports....

