Commemorating 20 years since the 2004 Indian Ocean tsunami, the deadliest in history, and its enduring legacy.

The colossal wave was so big that reverberated back and forth between the banks of the fiord for an astonishing nine days.

A 7.0 earthquake off the coast of Northern California in early December triggered a tsunami warning for parts of the California and Oregon coasts.

Christmas in 2004, a 9.1 magnitude earthquake under the Indian Ocean triggered tsunami waves that killed some 230,000 people across a dozen countries.

Understanding of the Sumatran subduction zone and its hazards has increased since the 2004 Indian Ocean earthquake and tsunami.

One of the deadliest natural disasters in modern history, the 2004 Indian Ocean tsunami marks its 20th anniversary on Dec. 26

The quake epicenter was 2 miles north-northwest of Cobb, a small community in the hills south of Clear Lake. The epicenter was 70 miles west of Sacramento and 27 miles north of Santa Rosa. A ShakeAlert was issued to cellphone users in portions of Lake, Sonoma, Napa and Mendocino counties, according to the USGS.

Twenty years ago, on Dec. 26, 2004, a 9.1-magnitude earthquake beneath the Indian Ocean triggered a tsunami with waves up to 100 feet high, killing an estimated 230,000 people. On March 11, 2011, a powerful tsunami traveling nearly 500 miles per hour with 10-meter-high waves swept over the east coast of Japan, killing more than 18,000 people.

Survivors and victims' relatives will this week mark the 20th anniversary of the 2004 Indian Ocean earthquake and tsunami, which killed more than 220,000 people across more than a dozen countries.

The earthquake and tsunami claimed the lives of over 200,000 people, the deadliest natural disaster of the 21st century.

Qurrata Ayuni, a 28-year-old survivor of the earthquake and tsunami that devastated her hometown two decades ago, has transformed her resilience into purpose.

In Motongkad, East Bolaang Mongondow, people felt the quake at III MMI intensity, but BMKG has not received any reports of damages caused by the earthquake. Modeling results show that this earthquake has no tsunami potential. As of 12:50 p.m., BMKG did not record any aftershock activity.