Abstract: The problem of finding the probability that a tropical storm will be in a given area at forecast time is considered graphically. With given bivariate data that have a joint normal distribution, a method is presented for ...

Abstract: Equations for the prediction of hurricane tracks have been developed by use of statistical methods. Data at sea level, 700 mb., and 500 mb. were selected as predictors. Forecasts are prepared in 12-hr. steps for periods ...

Abstract: The NHC-64 statistical equations for predicting the movement of hurricanes have been in operational use for 4 yr. These equations have continued to perform well. Following the 1966 hurricane season, however, it was apparent ...

Abstract: A multilevel primitive-equation model has been designed for regional weather forecasting in the Tropics. Several experimental forecasts have been made on hurricane movement and development and on a nondeveloping tropical ...