Quarterly forecasts indicate how slowly-varying large-scale economic climate influences make particular Quarterly conditions more likely than others. Random, unpredictable factors ('chaos') also partly determine year-to-year variations, and these will sometimes override large-scale influences. Such uncertainty makes a probabilistic format, as used here, advisable for Quarterly forecasts.
Changed a few words and this is ready to deploy.
I'll be fired certainly and would have to learn to be a freelance writer if I put the above in the remark of my forecast.
Isn't it enjoyable writing something like this, bad taste if you disapprove!