STORY: Footage showed UME soldiers building firewalls with a digger and using water to extinguish the fires burning vegetation on mountains in the Zaragoza province.
A fire that started in Ateca in the northeast has forced the evacuation of five villages including 1,700 locals, emergency services said.
In northern Galicia, a wildfire in Folgoso do Courel has burnt more than 10,000 hectares.
Emergency services added on Thursday that strong winds are making hard to control Cebreros’ wildfire.
Firefighters were battling flames in the regions of Castile and Leon, Galicia, Aragon, Madrid and Castile-La Mancha, with some local services running out of extinguishing capacity.
Spain's 10-day heatwave was the third-longest since records began, considering its preliminary end-date on Monday when temperatures dropped in most of Spain, but it could be extended as temperatures are expected to rise again in the coming days, national meteorology service AEMET said on Thursday.