A comparison of various dynamic and thermodynamic variables and descriptive factors for the three case studies. Wind speeds, θ, and q are averaged over the lowest 5 km of the atmosphere above the region in Fig. 1b, and over a 24 h period from 1200 LT 10 Jul 2015, 6 May 2015, and 28 Jul 2016 for the dry period, LR storm, and DS storm, respectively. Where a monthly mean is shown, this is given by the ERA-Interim mean between 1997 and 2016. CAPE and CIN are the mean values from the region and times in Fig. 8, computed over lake/land grid points as indicated. CIN is only calculated where CAPE > 400 J kg−1. Accumulated rainfall and mean OLR for the duration of the storm are computed over a box containing Lake Victoria and mean rainfall is also computed only over the storm area (where rainfall exceeds 0.1 mm h−1). Other relevant factors are also noted.