Global (MHD) simulation of the Earth’s magnetosphere on the arrival of the ICME on 2014 September 12. Instantaneous images of magnetospheric current density magnitude values (in units of μA/m²) extracted from the SWMF/BATS-R-US coupled with the RCM model at the X–Z_GSM in the meridional plane (a), (b) prior to the ICME arrival, (c), (d) at the ICME arrival, and (e), (f) during the maximum magnetosphere compression. Panels (b), (d), and (f) show equatorial (X–Y_GSM) cuts of the modeled magnetosphere at these instants of time. Color-coded lines in panels (b), (d), and (f) indicate magnetic field strength isocontours for different intensities (100 up to 300 nT) as extracted from the SWMF/BATS-R-US output. The black line on those panels represents the location of the magnetopause boundary in the dayside equatorial region (see text for details).