thunderstorm

But meteorologists say that predicting the path of fast moving, intense thunderstorms is a very tricky business.

She warned some thunderstorms may arrive on Tuesday, “when there will be sharp showers, with top temperatures of around 17C”.

US forecasters are currently watching an area of thunderstorms located over the Cabo Verde Islands off the west coast of Africa.

They often happen in thunderstorms in rain bands away from the eye of the storm - typically forming in the right quadrant of a storm, the weather service notes.

Typically they begin as what is known as a tropical wave - a low pressure area where thunderstorms and clouds develop.