Smoke from a large wildfire on the North York Moors has now stretched around 35 miles to the city of York.
Firefighters have been tackling the blaze on Langdale Moor, near RAF Fylingdales, since it broke out on Tuesday, with 20 appliances on the scene at the fire's height.
On Thursday North Yorkshire Fire and Rescue declared it a major incident .
On Friday afternoon the service said calls were coming in from people in and around York.
In a post on Facebook they said: "We believe this is smoke from the fire on Langdale Moor. If you're being impacted by the smoke we advise keeping doors and windows closed."
Nine fire crews remain on the scene of the blaze.
Meanwhile there are two fire engines at a separate fire on the A171 near the Flask Inn.
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