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Sky turns orange across UK

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Credit: Dominic Lipinski/PA Images via Getty Images
The sky in London on Tuesday evening.

The sky turned orange across parts of the UK on Monday as dust and smoke from fires in southern Europe swept north.

The reddish tint was a side effect of the remnants of Hurricane Ophelia and the wildfires that have been raging across Portugal and northwest Spain since Friday.

Smoke and debris from the fires — along with sand from the Sahara desert — are being carried north by the storm’s strong winds. Particles of smoke, dust and sand bend light to give it a reddish hue.

A red-hued sun has been seen before in the UK, but it’s this combination of events that has made Tuesday’s phenomenon particularly striking.

The trail of smoke spans over 1,000 miles (1,600 kilometers). The health risks are minimal in the UK as the smoke is mostly limited to higher altitudes in the atmosphere.

With the wind expected to change by Tuesday, the air is likely to clear.

Social media users have taken to Twitter and Instagram to document the strange phenomenon.

“Loving the weather in London today,” wrote martinjsylvester.

“Saharan dust & tropical air from #Ophelia has brought the #redsun to Loughborough!” Loughborough University posted on its Twitter account.

Journalist Rupert Myers shared this image of a yellow sky above the Thames in London. “Britain has returned to sepia colour,” he wrote.