(Left) Comparison of the storm SYM-H index for two storms from January 2005. The thick trace shows the observations, the red and orange traces show the normal resolution and high resolution SWMF/Geospace simulations, and the blue trace shows the SWMF/Geospace simulation run without the inner magnetosphere RCM component (from Haiducek et al., 2017). (Right) Scatter plot of the observed real time Dst time series (vertical axis values) against a SWMF prediction of the Dst (horizontal axis values). The green, orange, and cyan contour lines show the regions of 40, 80, and 120 values within a 2.6 × 2.6-nT bin. The diagonal long-dashed line shows the ideal data-model relationship. The two dashed lines show the −50 nT threshold values (from Liemohn et al., 2018).