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Satellite images show moor fire burning for more than two weekspublished at 12:29 British Summer Time

12:29 BST

By Emma Pengelly, BBC Verify

This morning I’ve been using satellite imagery and heat-source data to see if we can map the spread of a fire in the North York Moors over the past 18 days.

The Langdale Moor fire broke out on 11 August and firefighters have been on the scene ever since.

The earliest view of the blaze from space - published by satellite image provider Planet - was captured on its third day and shows smoke drifting north-west over the moorland.

Meanwhile, Nasa's Fire Information for Resource Management System (Firms), which detects hotspots on the earth’s surface, first picked up a heat source in the area on 12 August, represented by the red blocks on the map below.

On 13 August the fire was declared a major incident by North Yorkshire Fire and Rescue Service (NYFRS).

Nasa’s Firms continued to detect hotspots for the rest of the week before they began to reduce in number from 16 August. That afternoon NYFRS still had six fire engines and specialist appliances at the scene.

But on Monday 25 and Tuesday 26 August there was a significant increase.

Overnight into Tuesday the blaze had spread, NYFRS confirmed. A satellite image captured on Tuesday shows plumes of smoke billowing to the north-east.

Speaking in the last few minutes, the NYFRS chief said there has been no further spread of the fire in the past 48 hours.

Wrapping up the press conference, Mr Dyson thanks the public for their donations.

"The fire service is not able to accept cash donations itself, so people wishing to make donations can send them to the Fire Fighters Charity," he says.

He adds crews have received "an abundance of cakes and supplies and drinks from everybody, which has been wonderful and the crews really appreciate it, but we're at saturation point and can no longer accept any further donations, but thanks for that".

Mr Dyson says he appreciates the impact of the fire on the public, businesses and nearby residents, and the "support being shown" towards the fire service.

He wants to stress that "North Yorkshire is still open for business" and people should not be put off from visiting the county.

"All we ask is that you avoid the areas we've highlighted for safety and avoid the roads we've put the closures on," he says.

Evacuation procedures are still in place, but Mr Dyson doesn't expect them to be "deployed in any way".

"Of course we will continue to monitor that," he says.

"Should we have to evacuate anybody, please be reassured you will be informed well in advance and will be supported at any point you are out of your home, but we have no plans to do this as the area is safe."

Mr Dyson says he thinks it is "exceptional we have lost no property, there's been no loss of life or no injuries to our staff" despite such a huge fire, adding he thinks it is a reflection of the crews that have been working.

He says there has been "brilliant support from crews in Humberside, South Yorkshire and West Yorkshire, Cleveland, Durham and Darlington since day one".

He notes that needing so many firefighters has been "draining resources", saying he asked for national assets to be deployed once he realised the toll it was taking on regional crews.

The fire still covers 25km, Mr Dyson says, which is a "massive area" for such a small fire service to manage.

But he says that despite the "difficulties" encountered with emissions and World War Two bombs, crews have ensured there have been no further ordnance explosions over the last week.

"The strategy we adopted there was aerial support with aircrafts going over the area and dropping water in those areas to mitigate the impact on our firefighters", he says.

Mr Dyson hails the efforts of on-call firefighters, and thanks their families and primary employers "for allowing them to spend time away from their daily lives to tackle the blaze".

We still don't know how the fire broke out.

"The cause of the fire is still ongoing and will be reported in due course," Mr Dyson says.

Mr Dyson says the work is still ongoing, despite the fire being contained.

"Our contractors are still digging extensive fire breaks, they have dug kilometres wide in many areas and will continue to do so," he says.

He adds crews are being "realistic" as they know the weather can change over the weekend and will be making sure measures are still in place to ensure there is no further spread.

Mr Dyson says the only areas with visible flames are "well within the original cordons" put in place by the crews and these are "well under control in all areas".

The helicopter is being used for difficult terrain and hard-to-reach areas, he adds.

Mr Dyson says there has been "no further advancement of the fire in the last 48 hours and the fire is now contained".

He says 12 appliances, high-volume pumps and a helicopter remain at the scene.

Mr Dyson starts by expressing his "sincere thanks" to the fire crews for "working inordinately hard to extinguish the fire".

He says there has been an "extensive community event" in trying to tackle the blaze.

North Yorkshire Fire & Rescue Service Chief Fire Officer Jonathan Dyson updates the media on progress as crews continue to tackle the moor blaze.

BBC Yorkshire's Oli Constable meets farmers supporting the fire effort on Langdale Moor.

A fundraiser to support firefighters, farmers and gamekeepers battling the moorland blaze has raised more than £40,000.

Amy Cockrem set up a Justgiving page initially hoping to raise £100 to buy food and drink for those fighting the wildfire in the North York Moors National Park, but has been "overwhelmed" by donations.

"I can't thank everyone enough. At the minute, the firefighters have enough food and drink, so we're concentrating on supplying fuel for the farmers' tractors," she says.

She says she will keep “pushing even further” to raise more money to help the farmers.

Fire crews say they have been hampered by exploding World War Two bombs and tank shells while tackling the blaze.

Chief Fire Officer Jonathan Dyson previously said part of the site had been a tank training ground in the 1940s and there had been more than 18 explosions as the fire burned down to previously hidden explosives.

The Ministry of Defence says an explosive ordnance disposal team had found "various World War Two-era unexploded ordnance items", declaring them to be "inert practice projectiles".

Image source, North Yorkshire Fire & Rescue Service/PA Media

The moorland fire is thought to have had a "quite devastating" impact on local wildlife, an expert says.

Dr Briony Fox, director of conservation and climate change at the North York Moors National Park Authority, says archaeological remains and peatlands will have also been heavily damaged.

"It's burned a huge area of moorland," she adds.

Dr Fox says wildlife unable to move as fast as the fire's spread is likely to have suffered badly.

Alison Hume, MP for Scarborough and Whitby, says the scenes on the North York Moors are “almost unprecedented”.

She says firefighters are facing “extraordinarily difficult conditions” as they tackle the huge moorland blaze, and that farmers who have joined the effort have become a "land army".

Ms Hume insists the nearby seaside towns of Scarborough and Whitby are still “open for business” to visitors.

Fire crews from across the country have joined efforts to control the blaze - here, an appliance from Greater Manchester Fire & Rescue Service stands ready at Pickering Showground.

North Yorkshire Fire & Rescue Service is joined by:

• Cleveland
• Greater Manchester
• Humberside
• Merseyside
• Derbyshire
• West Yorkshire
• London Fire Brigade
• Cumbria
• Gloucester
• Tyne and Wear