Men use fig tree branches to extinguish flames approaching houses in the village of Sao Jose das Matas, near Macao, central Portugal, Wednesday, July 26 2017. Emergency services in Portugal are getting no respite from wildfires that are charring wide areas of forest _ and the huge billowing clouds of smoke they are generating are making visibility too poor to use water-dropping aircraft. (AP Photo/Armando Franca)

A man uses a bucket to fight a fire in a field outside the village of Sao Jose das Matas, near Macao, central Portugal, Wednesday, July 26 2017. More than 2,300 firefighters with more than 700 vehicles are tackling wildfires in Portugal, where every summer large areas of woodland are scorched. The flames were being driven by powerful winds across steep hillsides of dense pine and eucalyptus forest Wednesday. (AP Photo/Armando Franca)

A TV camerawoman shoots images of a fire raging up a mountain slope and reflected on the Tagus river outside the village of Sao Jose das Matas, near Macao, central Portugal, Wednesday, July 26 2017. More than 2,300 firefighters with more than 700 vehicles are tackling wildfires in Portugal, where every summer large areas of woodland are scorched. The flames were being driven by powerful winds across steep hillsides of dense pine and eucalyptus forest Wednesday. (AP Photo/Armando Franca)

The sun sets behind burnt pine trees in the village of Sao Jose das Matas, near Macao, central Portugal, Wednesday, July 26 2017. More than 2,300 firefighters with more than 700 vehicles are tackling wildfires in Portugal, where every summer large areas of woodland are scorched. The flames were being driven by powerful winds across steep hillsides of dense pine and eucalyptus forest Wednesday. (AP Photo/Armando Franca)