Summer thunderstorm frequencies have been low here in recent years
Starting in 19992 simply because my records start in 1992
Summer (June-August) Thunderstorms
1992-2001 26
2002-2011 27
2012-2019 7
Thunder is actually most common here in autumn, the showers off the warms sea often give 1 or 2 claps as they go overhead.
Gales have shown a big decrease in frequency since the 1990s.
Graham
Penzance just had a few large drops of rain, but I struggle to see where it came from!