Philippine volcano alert level raised Thousands of people have been forced to evacuate their homes as seismologists warn that the Taal volcano could erupt at any time, potentially triggering a tsunami PHILIPPINES 200km 125 miles Manila: Schools and businesses shut as clouds of volcanic ash engulf city Manila International Airport: Multiple flights suspended Taal volcano Country’s second most active volcano, has erupted more than 30 times in past 500 years, most recently in 1977. Eruption in 1911 killed 1,500 people Population inside 14km zone: 459,300 Population inside 17km zone: 931,400 Manila Bay Laguna Lake Muntinlupa Santa Rosa Calamba LUZON Tagaytay Tanauan San Pablo Batangas Batangas Bay Balayan Bay SOUTH CHINA SEA 10km 6 miles Sources: OCHA, AP, Openstreetmap © GRAPHIC NEWS