A new operational system for forecasting precipitation type.

Abstract

A new system is developed which gives conditional probability forecasts for three precipitation type categories: snow or sleet, freezing rain and rain. Also, the probability forecasts are transformed into categorical forecasts so that a 'best category' is provided. Verification of the new system on developmental and independant data samples indicates that the scores for the new snow category are generally very good and stable; the results for the freezing rain forecasts are not nearly as good. - from Author