Abstract: Significant developments at Suitiand, Md., since the spring of 1956 in operational numerical weather prediction (NWP) are discussed. Several improvements made in the operational barotropic model are reviewed. Current NWP ...

Abstract: Progress since 1955 in prognosis of synoptic-scale systems at the National Weather Service's National Meteorological Center (NMC) is reviewed. The application of numerical weather prediction (NWP) to the forecasting of ...

Abstract: The National Meteorological Center (NMC) surface analysis of a Mississippi Valley cyclogenesis is discussed from two viewpoints; first, as the development of a polar-front wave, and second, as the development of the field ...

Abstract: A brief history is given of the use of Numerical Weather Prediction guidance at NMC since 1958. A review of verification statistics shows that the impact of use of operational prediction models from the Barotropic to the ...