The 1170 Syrian Earthquake

On the morning of 29 June 1170, the inhabitants of what are now western Syria, central southern Turkey, and Lebanon were disturbed by one of the largest seismic events ever to occur along the northern part of the Dead Sea Transform Fault System (also called simply the Levant Fracture).

We've mentioned earthquakes before, during a synod in England in 1382, the 1386 Destruction of Basel, and the Monday before Easter 1185 in the East Midlands. The 1170 Syrian quake was so devastating that an uneasy truce was formed between enemies Emir of Aleppo and Damascus Nur ad-Din and King Amalric I of Jerusalem.

The day had begun in 1170 and people were going about their business when it struck. In Antioch, Patriarch Atanasius I was performing Mass in the Cathedral of Saint Peter, where 70 years earlier a version of the Holy Lance had been found. Athanasius was pulled out alive but died soon after from his injuries. About 50 others were killed in the collapse of the dome. Several other churches in Antioch were also destroyed, as were the defensive walls along the Orontes river.

Damage reached from Antioch to Tripoli in the south. Bohemond III, Prince of Antioch, was so distressed by the destruction all around that he cut his hair and donned sackcloth as a sign of mourning. The Knights Templar and Knights Hospitaller had been given several castles by Count Raymond II of Tripoli as a shield on his borders to hold against the Turks. They were all reported as destroyed.

This earthquake has been estimated to have been a magnitude 7.7 on the moment magnitude scale. The illustration shows the destructive force of the scale. Damage was so widespread that it appears in several records. In all, an estimated 80,000 people were killed, and aftershocks were felt for three months.

Although Nur ad-Din and Amalric were agreed to hold off on hostilities while rebuilding their kingdoms, others were not so kind. In December, Saladin came with an enormous force to besiege Amalric's fortress of Darum in the south while Tripoli was still trying to rebuild. For some reason, however, Saladin destroyed part of Darum and left without occupying it. Amalric rebuilt Darum to be stronger, but the threat from Egypt was clear.

Amalric did his best to preserve the kingdom. We will see how that turned out tomorrow.