Two earthquakes measuring Mww 7.8 and 7.5 struck near the border between Turkey and Syria with a maximum Mercalli intensity of XII (Extreme). The earthquakes resulted in numerous aftershocks and a death toll of 57,658 people.

On 6 February 2023, at 04:17:35 TRT (01:17:35 UTC), a M_w 7.8 earthquake struck southern and central Turkey and northern and western Syria. The epicenter was 37 km (23 mi) west–northwest of Gaziantep. This strike-slip shock achieved a Mercalli intensity of XII (Extreme) around the epicenter and in Antakya. It was followed by a M_w 7.7 earthquake, at 13:24:49 TRT (10:24:49 UTC). This earthquake was centered 95 km (59 mi) north-northwest from the first. There was widespread severe damage and tens of thousands of fatalities.

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.

Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia, Armenia, Azerbaijan, and Iran to the east; Iraq, Syria, and the Mediterranean Sea to the south; and the Aegean Sea, Greece, and Bulgaria to the west. Turkey is home to over 85 million people; most are ethnic Turks, while ethnic Kurds are the largest ethnic minority. Officially a secular state, Turkey has a Muslim-majority population. Ankara is Turkey's capital and second-largest city. Istanbul is its largest city and economic center. Other major cities include İzmir, Bursa, and Antalya.