An official in Turkey says the country faces a “very risky week” for wildfires as blazes across parts of southeast Europe and the Balkans damaged homes and led to a huge firefighting operation that included evacuations.

Wildfires are currently raging in Turkey, Greece and Bulgaria amid a 44°C heatwave, ongoing droughts and strong winds. A map from Nasa shows how flames have spread across the region in the last week despite efforts to contain them. What has become clear is that climate change is accelerating the disaster in a region already on the brink.

Wildfires that have engulfed Turkey for weeks spread rapidly overnight, threatening Bursa and forcing 3,500 to flee. Greece and Bulgaria are also contending with fires.