With signs that Popocatépetl volcano, located 45 miles north of Mexico City, may be coming to life, authorities have told more than 25 million people to prepare to evacuate if the volcano erupts, CNN reports.
The volcano has been spewing ash for more than a week, disrupting flights out of Mexico City and covering local villages in a haze of gray. People within a 60-mile radius around the volcano in the states of Morelos, Puebla and state of Mexico have been warned that they may be forced out if the volcano has a massive explosion. Three million people who live in areas adjacent to the volcano have been put on “yellow phase 3” alert, meaning they should prepare for immediate evacuation if activity at the volcano increases.