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An earthquake with a magnitude of 5.8 or 5.9 struck south of Cairo, Egypt, killing 545 people.

Seismic magnitude scales

Scales to describe earthquake strength

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…
Source: Wikipedia (CC BY-SA)

1992 Cairo earthquake

Magnitude 5.8 earthquake in Egypt

The 1992 Cairo earthquake, also known as the Dahshur earthquake, occurred at 15:09 local time on 12 October, with an epicenter in the Western Desert near Dahshur, Giza, 35 km (22 mi) south of Egypt's capital city, Cairo. The earthquake had a magnitude of either 5.8 or 5.9, but…
Source: Wikipedia (CC BY-SA)