Earth moved 70 feet under 8.6 quake

8.6 Earthquake Strikes indonesia
A preliminary analysis indicates one side of the fault lurched 70 feet past the other — a major reason for the quake's size. By contrast, during the 1906 magnitude-7.8 San Francisco earthquake along the San Andreas — perhaps the best known strike-slip event — the ground shifted 15 feet. end quote from word button at top of page of enclosed quotes of news articles.

If the earth moved 70 feet below this quake sideways and the San Francisco quake only moved the earth 15 feet, then it makes a lot of sense that this earthquake was extreme and felt in both India and Thailand far away from Indonesia. It was the 11th strongest of all the earthquakes since 1900.