New endeavors this year included 1) an exploration of the impact of assimilating radar reflectivity and velocity data into SSEF members on short-term forecasts of hazardous convective weather; and 2) a more detailed examination of the relationship between model forecasts of convective storms and model predictions of the environment, focusing on boundary-layer thermodynamic structure, airmass boundaries, and sub-synoptic scale features in the free atmosphere. The goal of both endeavors is to provide specific information to model developers that can guide their efforts to improve various components of the WRF model. A finding from the latter effort is that the perceived value and accuracy of the convection-allowing forecasts is often tied to the characteristics of the lower resolution operational NAM model analysis and forecasts that provide the initial and boundary conditions to most of the WRF models. Mesoscale and even synoptic scale errors in the environment are often large enough in the convection-allowing model domains to greatly diminish the predictive value of the explicit 18 to 30 h thunderstorm forecasts. This highlights the importance of providing an accurate mesoscale environment to the convection allowing models and underscores the need to develop model perturbation strategies that are appropriate for convection-allowing ensembles. In addition, it was also found that incorrect prediction of nocturnal and morning convection would at times erroneously modify the model mesoscale environment during the next afternoon and negatively impact WRF model forecasts of thunderstorms. Finally, these observations emphasize the need to develop tools to diagnose effectively and efficiently areas of high or low forecast confidence, and maybe even recognize errant model solutions or ensemble members to aid forecasters in deciphering the voluminous amount of output available.