Abstract: In order to improve the application of precipitation forecast products from numerical models, forecast results were tested using observed precipitation from 9 weather stations of Langfang and forecast products from five numerical models, namely, Japan, Germany, T639, GRAPES and MM 5 models.The results indicate that TS scores of Japan and Germany models for more than or equal to 10 mm and 25 mm precipitation are 10.0%-40.0% higher than those from the other models.The MM 5 model for more than or equal to 50 mm precipitation has better forecast results in summer.T639 and GRAPES models show better prediction ability for heavy rain or more grade and light snow, while Japan and Germany models are better for moderate and heavy snow.TS score of T639 for rainstorm reaches 33.3% and higher than those of the other models.

Key words: Precipitation, Numerical models, Forecast effect, Verification, Assessment