Thunder increases in activity with 27 day cycles.

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> https://pdfs.semanticscholar.org/f32e/e43c9548fead68a47b5786bd3764d33a1cef.pdf

>https://www.researchgate.net/publication/320838350_Searching_for_the_27-day_solar_rotational_cycle_in_lightning_events_recorded_in_old_diaries_in_Kyoto_from_the_17th_to_18th_century

>and indicates the madden Julian cycle of 27 day

https://search.proquest.com/openview/65a6f4255ebbc1386cd698ff096974dc/1.pdf?pq-origsite=gscholar&cbl=105744

The solar winds are creating the tracts for the formation of lightning activity. And partly explains why there is heightened lightning activity.

Correspondingly there is also a lower 9-day cycle, increases of Ozon. These molecules are also created in greater rates with lightning activity.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5054829/
13:1 A, L, M, R

2:19 A, L, M