Abstract: Subjective rain probability forecasts issued by the Weather Bureau Forecast Center at San Francisco during four winter seasons are evaluated. It was found that the observed occurrence of rain tended to be greater than ...

Abstract: An adaptive pattern classification system termed Adaline is described. This system, when trained on 200 winter sea level pressure and 24-hr pressure change patterns covering the area from 25N to 65N and 110W to 170W, was ...