Measuring Mw 8.6, the largest earthquake on land occurs in the Assam-Tibet-Myanmar border, killing 4,800.

Seismic magnitude scales are used to describe the overall strength or "size" of an earthquake. These are distinguished from seismic intensity scales that categorize the intensity or severity of ground shaking (quaking) caused by an earthquake at a given location. Magnitudes are usually determined from measurements of an earthquake's seismic waves as recorded on a seismogram. Magnitude scales vary based on what aspect of the seismic waves are measured and how they are measured. Different magnitude scales are necessary because of differences in earthquakes, the information available, and the purposes for which the magnitudes are used.

The 1950 Assam–Tibet earthquake, also known as the Assam earthquake, occurred on 15 August and had a moment magnitude of 8.7. The epicentre was located in the Mishmi Hills. It is one of the strongest earthquakes ever recorded on land.

The India–Myanmar border is the international border between India and Myanmar. The border is 1,643 kilometres (1,021 mi) in length and runs from the tripoint with China in the north to the tripoint with Bangladesh in the south.

August 15 is the 227th day of the year in the Gregorian calendar; 138 days remain until the end of the year.