Trends in skill and accuracy of National Weather Service PoP forecasts

Ramage (1982), in his paper "Have Precipitation Forecasts Improved?" analyzed 12 years of National Weather Service Forecasts and concluded, "After the contribution of relative precipitation frequency was removed, accuracy improvement, amounting to about 1% in seven years could be detected only in the eastern and central region winter forecasts" This paper reports on a study undertaken to better understand Ramage's conclusions and to see whether they would hold over a longer period of record. Harry R. Glahn. "July 1984." Includes bibliographical references (pages 9-10). 1984 NWS (National Weather Service) Library Public Domain 1931