The strong winds of up to 90 kilometers per hour are making it very difficult for the extinction teams to control the fire that still threatens the Spanish National Park of Doñana, a UNESCO World Heritage Site and a center for the preservation of several protected species and located in the South of the country.
Up to three outbreaks are still advancing without the more than 550 troops being able to do anything to stop them.
For a few hours, the residents and visitors to the Matalascañas area, some 50,000 people, were isolated by the roadblock.
Some 2,000 people had to be evacuated on Saturday and spent the night in municipal facilities.
Authorities suspect that the origin of the fire was not natural causes.