Modeling Earth’s ionospheric electric currents and their associated magnetic fields is of fundamental importance for geomagnetism and for the study of ionosphere coupling with the neutral atmosphere and the magnetosphere. Modeling these fields and currents during geomagnetic storms is particularly challenging due to the limited data available combined with high time-space variations during such events. In this study, we propose an extension of the approach developed by Egbert et al. (2021) to build a new model of the storm-time ionospheric electric currents and magnetic fields. It relies on a joint utilization of magnetic data from ground and the Swarm satellites and of the physics-based Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIEGCM).