The shock had a moment magnitude of 6.7 and a maximum Mercalli intensity of IX (Violent).

The SJFZ is a component of the larger San Andreas transform system and is considered to be the most seismically active fault zone in the area.

Roadways and irrigation canals also sustained damage and small sand blows were seen on a farm northwest of San Jacinto.

[4] The earthquake occurred on a Sunday afternoon when most of the businesses in San Jacinto were closed and void of customers.

Damage to chimneys, windows, and plaster walls occurred to buildings and structures within 100 miles (160 km) of San Jacinto.