Extreme Weather's video: Calbuco Volcano Erupts Chile 22 04 2015

Follow Extreme Weather on Facebook: https://www.facebook.com/pages/Extreme-Weather/1522745821316938 The Calbuco volcano in southern Chile has erupted twice in the space of a few hours - having lain dormant for decades. Footage from the area shows a huge column of lava and ash being sent several kilometres into the air. The authorities have declared a red alert and evacuated more than 4,000 people within a 20km (12 mile) radius. The Calbuco volcano is one of the most active in Chile, but its eruption took officials in the area by surprise. The inhabitants of the nearby town of Ensenada - along with residents from two other smaller communities - have been ordered to evacuate their homes. Schools in the area have been shut and some flights cancelled. The nearby city of Puerto Montt - a gateway to the popular Patagonia region - has already been blanketed in a cloud of ash. Neighbouring Argentina has also put emergency measures in place for the city of Bariloche - about 100km from Calbuco - where ash clouds are expected. Residents there have been warned to stay indoors. Chile has the second largest chain of volcanoes in the world after Indonesia, with about 500 that are potentially active. It is southern Chile's second volcanic eruption in as many months. In March, the Villarrica volcano erupted in the early hours of the morning, spewing ash and lava. The authorities say this latest eruption is more serious.