Copyright Information: All images are in the public domain and available for free. If you use this image, credit NOAA/NGDC, T.J. Casadevall, U.S. Geological Survey. |
Aerial view of the Sacobia River drainage on August 15. The valley was filled by June 15 deposits and was, at the time of this photo, being partially reworked by mudflows. Steam rises from the still hot interiors of the June 15 deposits. Five thousand people were evacuated from Tabon in the Pampanga region; 96 houses were washed away on August 14. Debris reached a depth of three meters. Mudflows on August 18 prompted another large evacuation with 3,000 people fleeing six towns in the Pampanga and Tarlac regions on the volcano's east flank. Up to 55,000 people evacuated their homes because of the August 20 mud flows. Image Credit: T.J. Casadevall. U.S. Geological Survey June 15, 1991 Pinatubo Philippines volcano Mount Pinatubo is an andesitic island arc volcano, located on the southwestern part of the island of Luzon in the Philippines. Prior to 1991, it had been dormant for more than 635 years. After months of rumbling, the volcano stirred to life on April 2, 1991. The next two and a half months were marked by generally increasing volcanic and seismic activity at the site. On June 15, a cataclysmic eruption began with a tremendous explosion. This slide set shows the early stages of the eruption phase, the cataclysmic eruption of June 15, and the effects and aftermath of the eruption. Subsequent calamities caused by the ash, pyroclastic flows, mud flows, and flooding are also depicted. Event Data:
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