Satellite observations of the aerosol cloud produced by the eruption of Mount Pinatubo in the Philippines on June 15 indicate that, in terms of sulfur dioxide emissions, the eruption may be as much as two times larger than the El Chichon eruption in Mexico in April 1982, making Pinatubo possibly the largest eruption of the century. Ten days after the initial eruption, the aerosol cloud formed a nearly continuous band that stretched 11,000 km from Indonesia to Central Africa. Timely evacuations saved many lives on Luzon Island, but the combined effects of the eruption and a typhoon killed more than 300 people.

The following report on the eruption and its atmospheric effects was provided by the Smithsonian Institution's Global Volcanism Network. All times are local (= UT + 8 hours).