The nowcast maps are generated by OVATION Prime – a new-generation precipitation model (Newell et al., 2010) driven by an optimized solar wind coupling function (Newell et al., 2007). The model includes seasonal variation and separates different types of auroras – monoenergetic, wave, diffuse and ion. In these maps all types are summed together – Electrons + Ions: 10R_e above Earth.