In 1991, the second largest volcano eruption of the 20th century jolted the Philippines and much of the world. 847 people perished as a result, although numbers could have been greatly more had Filipino and American volcanologists not signaled an evacuation of surrounding areas. Nevertheless, great economic damage was done to local agriculture. The American military installations – Subic Bay and Clark Airforce Base – suffered considerable damage due to ash acumation. Globally, the temperature dropped by half a degree Celsius/one degree Fahrenheit.
