But what do the different levels of the scale really mean? Gale force winds batter the harbour wall at Seaham, County Durham, earlier this. Scale, Force Rating, Observable Land Effects, Speed MPH, Effect at sea. 0, Calm, Vertical Smoke 7, Moderate Gale, Trees sway, , Rough to very rough. The Breast Cancer Risk Assessment Tool is an interactive tool designed by scientists at the National Cancer Institute (NCI) and the National.