As forecast, heavy rain, thunder and frequent lightning has been moving across the UK.
The video above shows the lightning strikes that have been recorded across the UK and Ireland between 1am and 11.27am on Saturday.
In this time, around 4300 lightning strikes have been recorded, gradually spreading northwards.
The lively weather has been caused by warm, humid air from France and Spain, colliding with cooler air from the Atlantic.
How is lightning detected?
When lightning strikes occur, pulses of electromagnetic energy are created, spreading out in all directions.
These pulses, known as sferics, have a very low frequency (VLF), which is outside the range of what we are able to see and much lower than the frequency of normal radio waves.
These VLF waves are capable of travelling large distances because they are reflected between the surface of the earth and a layer of the upper atmosphere called the ionosphere.
Detection of these very low frequency sferics is carried out by ATDnet – a Met Office network of 11 sensors around the world that works around the clock, collecting information.
When a lightning strike occurs, each sensor will record the sferic at a slightly different time as the distance between each sensor and the point at which the lightning strike originated will vary.
The network of sensors, connected to a central computer at Met Office HQ, then cross-references the time each lightning strike took to be detected by each sensor, and is then able to triangulate the point at which it took place – a process called Arrival Time Difference (ATD).
Once a lightning strike has been detected, the information can be plotted on a map to show when and where they have taken place.