Data files pertaining to the paper 'A climatology of coupled tracks of extratropical cyclones and mesoscale convective systems.' Submitted to Journal of Geophysical Research: Atmospheres. This dataset aims to combine the two databases from readme section (i) and section (ii) into a single cohesive database of coupled systems. The data itself includes a dataset of mesoscale convective systems (Feng, 2021) and extratropical cyclones (Crawford et al, 2021). Following, we include a dataset of coupled systems in csv format which were developed using an algorithm run between the two datasets. The most intense of these tracks (which were selected based on methods described in the paper) had individual datasets developed via interpolation of ERA5 data, including variables such as temperature, specific humidity, and vorticity, as described in readme section (iv). Related publications, usage, and license included in readme file.