A winter Cairngorm constitutional

The weather forecasts were really strange. MWIS was completely useless, using word like "some hills..." and "other hills..." without any hint where these better or worse conditions might be. Meto were only slightly better. At least they hinted there would be an inversion over the Southern Cairngorms but neglected to mention Northern Cairngorms at all! The latter's forecasts could be better timed, the evening before coming out well into the evening some days does not give much or any time to formulate plans.