Why Liverpool’s sky turned yellow as storms hit Merseyside

The sky over Merseyside turned a bizarre yellow colour as thunderstorms rolled in across the region.

As areas were hit by more extreme weather, including lightning and heavy downpours, many questioned the strange scenes outside their windows, with some comparing it to a sepia-style glow.

People took to social media to ask what was causing it while many colourfully described what they thought it looked like.

On Twitter, user @boldmarmalade said: "Is the sky yellow for anyone else? Whoa."

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Another said: "Weird yellow/grey sky Garston way. Looks like a sulphur colour. Very ominous."

Kieran added: "The sky outside mine in Liverpool now looks absolutely mental!

Yellow sky over Eastham

"Everything looks yellow. Never seen it like this before!"

But while some people suggested that the yellow sky meant a tornado was headed for the region, the real reason is far less concerning.

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According to the National Severe Storms Lab, the colouring of the sky is caused by the same process that creates vivid colours seen during sunsets.

As most thunderstorms happen in the late afternoon, like those in Merseyside, the sun is already beginning to set.

This means that there are shorter wavelengths of blue light and they are scattered quicker due to the rumbling thunder.

Yellow sky over Liverpool, taken from Wirral

During this process, only the yellow, orange and red ends of the spectrum are left to colour the sky.

The phenomenon has managed to startle quite a few Merseysiders, with some saying the city looks like it is being covered by a sepia filter.

Many shared images of the sky on Twitter to ask if others had experienced it too.

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Jay said: "Mad colour to the sky here"

Rachel Durand also tweeted: "Golden Sky"

On Wednesday afternoon, the Met Office upgraded the weather warning in Merseyside to amber.

This means that the current and expected storms could present an immediate danger to life as they carry on.

The warning runs from 5:40pm until 9pm tonight and has been issued because severe thunderstorms are causing flooding and disruption in a few places.

The warning said: "There is a chance that fast flowing/deep water could suddenly occur, bringing a danger to life and extensive flooding of homes and businesses

"Damage to buildings/structures from lightning strikes, hail, strong winds may occur.

"If flooding occurs, road closures with long delays and cancellations to bus and rail services are possible.

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"Rapidly changing, dangerous driving conditions from spray, sudden flooding, standing water and/or hail might occur.

"Power and other essential services, such as gas, water, mobile phone service could be lost.

"Communities might be completely cut off, perhaps for several days."