The Meteorological, Climatological and Geophysical Agency of Indonesia (BMKG) and the Australian Bureau of Meteorology (BOM) issue tsunami warnings, after an undersea 7.9 magnitude earthquake strikes southwest of Sumatra, in the Indian Ocean.
A magnitude 7.1 earthquake strikes southwestern Alaska, leaving 10,000 in the Anchorage area without power and forcing the evacuation of several homes on the Kenai Peninsula. The National Weather Service reported that there was no tsunami following the earthquake.
160 people are missing from a village on the Indonesian village of Betu Monga on Sumatra hit by a local tsunami after a 7.5 magnitude earthquake struck south of the Mentawai Islands. The earthquake leaves at least one person dead and damages 150 houses.