The storm tracking algorithm TempestExtremes (Ullrich and Zarzycki 2017; Zarzycki and Ullrich 2017) uses sea level pressure minima to find storm candidates. It then uses an upper level difference in geopotential height (or temperature) to determine if there is a warm core, and this together with other conditions are used to stitch the candidate points together into tracks.

The algorithm used for the storm-tracking is also described in the metadata of the track files and full details can be found in the linked documentation.

The storm tracks were calculated using the Lotus cluster at on the JASMIN compute facility at the Centre for Environmental Data Analysis (CEDA).