On 27 June, amid a Europe-wide heatwave, a forest fire in Catalonia raged out of control, despite the efforts of hundreds of firefighters working through the night. It broke out on 26 June, and had destroyed over 10,000 acres by the next morning. Already thirty people have been evacuated from farmhouses, and the regional government warned that it could eventually devour 50,000 acres. It may have been caused by manure in a farm generating enough heat to explode and produce sparks. Much of Europe is gripped in a record-breaking heatwave that could send thermometers above 40 C (104 F).