Authorities said that gusting winds of up 43 mph that changed course erratically, combined with the high temperatures, made it very tough for crews.
“The fire was able to cross a reservoir some 500 meters wide and reach the other side, to give you an idea of the difficulties we faced,” Juan Suárez-Quiñones, an official for Castilla y León region, told Spanish state television TVE.
The fire in Zamora was started by a strike from an electrical storm on Wednesday, authorities said. The spreading fire caused the high-speed train service from Madrid to Spain’s northwest to be cut on Saturday. It was reestablished on Sunday morning.
Military firefighting units have been deployed in Zamora, Navarra and Lleida.
There have been no reports of lives lost, but the flames reached the outskirts of some villages both in Zamora and in Navarra. Videos shot by passengers in cars showed flames licking the sides of roads. In other villages, residents looked on in despair as black plumes rose from nearby hills.
In central-north Navarra, authorities have evacuated some 15 small villages as a precaution, as the high temperatures in the area are not expected to drop until Wednesday.
They also asked farmers to stop using heavy machinery that could unintentionally spark a fire.
“The situation remains delicate. We have various active fires due to the extremely high temperatures and high winds,” Navarra regional vice-president Javier Remírez told TVE.
Remírez said that some villages had seen some buildings damaged on their outskirts.
Some wild animals had to be evacuated from an animal park in Navarra and taken to a bull ring for safe keeping, authorities said.
Wildfires were also active in three parts of northeast Catalonia: in Lleida, in Tarragona and in a nature park in Garaf, just south of Barcelona.
Germany has also seen numerous wildfires in recent days following a period of intense heat and little rain. The country’s national weather agency said the mercury reached 102.6 F in the eastern cities of Dresden and Cottbus on Sunday.
Strong winds have been fanning a blaze near the town of Treuenbrietzen, about 31 miles southwest of Berlin, prompting officials to order three villages evacuated Sunday.
About 600 people in Frohnsdorf, Tiefenbrunnen and Klausdorf were told to immediately seek shelter at a community center.
“This is not a drill,” town officials tweeted.
More than 1,400 firefighters, soldiers and civil defense experts were deployed to tackle the blaze, which also affected a former military training area known to be contaminated with ammunition.
Officials expressed hope late Sunday that thunderstorms moving in from the west would help put out the fires.