A major earthquake with a moment magnitude of 7.6 (USGS magnitude) occurred at 19:43:55 UTC 3 January (day 003) and was located 93 miles WNW of Manokwari, Irian Jaya, Indonesia (0.51S, 132.787E, 21.7mi/34.7km depth–USGS location).

Two hours and 50 minutes after the first earthquake, a second major earthquake (occurring at 22:33:42 UTC 3 January, 2009) with a moment magnitude of 7.3 (USGS magnitude) occurred 51.7 miles WNW of Manokwari, Irian Jaya, Indonesia (0.695S, 133.279E, 21.7mi/34.7km depth–USGS location).

These earthquakes produced tsunamis that were recorded at tide gages monitored at the Tsunami Warning Centers. Many observatories provide data to the centers; such as the NOAA National Ocean Service, the Japanese Meteorological Agency, the U. of Hawaii Sea Level Center, the Chilean Navy, and the National Tidal Facility in Australia among others. Click on the site name to see a graph of the tsunami, when available. Listed wave heights are maximum amplitude in cm (above sea level). Observed Arrival time is the actual tsunami arrival time in UTC on gages where it could be determined. The Computed Arrival time is the estimated time of arrival computed at the West Coast/Alaska Tsunami Warning Center (WC/ATWC) based on the origin time and location. The Sample Interval column shows the time between samples.