Thank you for your interest Studiot
As you mentioned the weather, one aspect of my research was to look at the distribution of riots as they occurred in months of the year.
There was a clear correlation showing a higher incidence of riots in the summer months. A Plot published in my work is attached which is % riots by month plotted against average hours of sunshine by month for the majority of the study period in England & Wales.
Very many disparate influences contribute to the onset of rioting, including sociological, economic, racial, religious, sporting, confinement & weather.
This shows that when there are so many influences, the possibility of further contributory factors not previously considered may indeed play a part in the onset of violence, including, in the case of my study, the effects of tectonic stress.
Chart 3-1 for Science Forum.pdf