03/09/2026
Hello there Folks, and welcome to September. I’m sure, like me, you have all rejoiced at the recent rainfall. But how do you feel about the thunderstorms? Personally, I am in the love camp. We pull up chairs as if it’s a favourite movie.
I’m sure this would have been mentioned in geography lessons many decades ago, but I decided to read up on the ins and outs of a thunderstorm.
Thunderstorms start their life in the big fluffy looking cumulonimbus clouds that you can watch rising up into the sky.
These build when warm moist air is forced to rise by colder air, this could be from meeting a cold front, mountains, coastal cliffs etc.
As the positively charged water in the warm air rises higher it cools and then freezes into ice particles. These particles join together and downdrafts send them back down in the cloud.
Despite these clouds looking like giant cotton wool balls, they are actually quite turbulent inside causing the particles to collide. In simple terms this creates static electricity to build up in the cloud with a negatively charged bottom and a positively charged top.
This static electricity will look for a way to discharge, which can happen within the cloud, between clouds or by connecting with a positive charge rising up from the ground.
A lightening bolt can reach up to 30,000°C, that’s five times hotter than the sun! This rapid change in temperature causes the air around the lightening strike to expand and contract making the bang.
Sound travels much slower than light at 343m a second (at 20°C) so every three seconds between the flash and bang is about a kilometre away.
In France between 100 and 200 people are stuck by lightening each year with 10 to 20 of those being fatal. There isn’t any individual data for Normandie, but one person has been hospitalised this year and some livestock has been killed when lightening connected with the electric fence in the field.
So, if like me you enjoy watching the storms, remember to do so from a safe place.
I have used a stock image, so if you have any storm photos, I’d love to see them.