Ex-hurricane Ophelia may not have hit the capital in quite the same way it is battering the North of England, but it has had one surprising effect: it has turned the sun red.
Twitter users began commenting on the eerie yellow skies and reddish light in the early afternoon, as the sun began to turn rust-coloured.
The future's sepia pic.twitter.com/frtRo2DTwd— Rachel Johnson (@RachelSJohnson) October 16, 2017
But despite the sky's weird appearance, the Met Office insisted there was nothing to worry about.
"An interesting [phenomenon] that is a result of the movement of ex-Ophelia is the colour of the sky and the sun this morning, and dust on cars," it said.
"The same southerly winds that have brought us the current warmth have also drawn dust from the Sahara to our latitudes and the dust scatters the blue light from the sun letting more red light through much as at sunrise or sunset."
So there you go: it's desert dust.
Of course, some had their own theories:
Red sky at night, shepherd's delight. Red sky in the morning, shepherd's warning. Red sky at midday, this is basically bladerunner #redsun— Luke Harrison (@lukeharrison86) October 16, 2017
Sun’s gone weird. I blame Trump. pic.twitter.com/wL5VkEr1H6— Lucy Lumsden (@lucylumsden) October 16, 2017
Although Ophelia was not expected to affect the capital, the Met Office suggested London will be hit by its outer reaches.
The Met Office has issued severe weather warnings in Northern Ireland, as well as western and northern parts of Britain this afternoon and tomorrow evening.
"Everyone in these areas should prepare for longer travel journeys and ensure they take the necessary precautions to ensure they and their families and property are safe," it said.