NOAA Tsunami Event Page

2009, National Oceanic and Atmospheric Administration.

The Samoa tsunami was generated by a Mw 8.1 earthquake (15.509˚S, 172.034˚W ), at 17:48:10 UTC, 195 km (125 miles) south of Apia, Samoa (according to the USGS). In approximately an hour, the tsunami was recorded at DART® buoys 51425 and 51426. Forecast results shown below were created in real time (during the tsunami propagation) with the NOAA forecast method using MOST model with the tsunami source inferred from DART® data.