Chile and Argentina have ordered a red alert and evacuation of around 3,000 people living near the Copahue volcano located between their shared border.
Last December, Chile also issued a red alert after the volcano started spewing ash and gas, resulting in a cloud of ash almost a mile (1.5 kms) high in the Biobio region.
Copahue is one of the most active volcanoes in the region.
More top news
Seventy five high-rise buildings in 26 local authority areas have failed fire safety tests, MPs have been told.
The decision represents something of a victory for the president who will now be able to enforce most of his controversial 90-day ban.
Cool in the north, warmer air to the south