Summary Time Evolution of Ensemble Avaraged Fields reveales: Kelvin Response to the East of SSTA Initial drying followed by Moistening Ekman convergence is important. Propagation of wave front is SLOW : moist-Kelvin Rossby Response to the West of SSTA Initial Low Pressure Anomaly Ekman Divergence suppress Precipitation Westward Extension is Obscure: Later: Negative Heating generates High Pressure Anomaly.