An earthquake registering 5.9 MW struck northern Afghanistan, triggering landslides that killed over 2,300 people and destroyed around 15,000 homes.

The February 1998 Afghanistan earthquake occurred at 19:03 local time near the Afghanistan-Tajikistan border. The strike-slip shock had a moment magnitude of 5.9 and a maximum Mercalli intensity of VIII (Severe). With several thousand dead and hundreds injured, the event's effects were considered extreme by the National Geophysical Data Center. It was felt at Tashkent and Dushanbe, and aftershocks continued for the next seven days.

The moment magnitude scale is a measure of an earthquake's magnitude based on its seismic moment. M_w  was defined in a 1979 paper by Thomas C. Hanks and Hiroo Kanamori. Similar to the local magnitude/Richter scale (M_L ) defined by Charles Francis Richter in 1935, it uses a logarithmic scale; small earthquakes have approximately the same magnitudes on both scales. Despite the difference, news media often use the term "Richter scale" when referring to the moment magnitude scale.

Landslides, also known as landslips, rockslips or rockslides, are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, mudflows, shallow or deep-seated slope failures and debris flows. Landslides occur in a variety of environments, characterized by either steep or gentle slope gradients, from mountain ranges to coastal cliffs or even underwater, in which case they are called submarine landslides.