What about the 1998 Indian and Pakistani explosions?
On May 11, 1998, the Indian government detonated a nuclear explosion. Two days later, they conducted additional tests and in a press conference on May 17th, annouced that they had conducted a total of 5 tests with varying yields. These were the first announced tests since the May 18, 1974 test.
In response to the Indian explosions, Pakistan detonated 6 nuclear explosions on May 28 and 30, 1998. The material below describes seismological aspects of these nuclear tests, including information on the differences between explosions and earthquakes.
Please also see our FAQ on the Comprehensive Test Ban Treaty and on seismological aspects of treaty monitoring.