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NOAA NCTR research product
Not an official forecast

NOAA News Feature! How to Forecast a Wave: Indian Ocean Tsunami Tests NOAA’s New Forecast System

The Andaman Islands tsunami was generated by a shallow Mw 7.7 earthquake (14.1˚ N, 93.0˚ E), at 19:56 UTC, about 260 km N of Port Blair, Andaman Islands, India (according to NOAA PTWC tsunami-watch statement issued 9 minutes after the earthquake). In approximately an hour, the tsunami was recorded at DART® buoy 23401. Research 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.

tsunami propagation animationTsunami propagation animation (8.3 MB), shows propagation dynamics of the research forecast model computed with the MOST. Click to animate.
maximum wave amplitude distributionMaximum wave amplitude distribution created with the MOST forecast model. Triangles indicate DART® buoy locations. 
Click to see larger image

The graphics above display forecast results, showing qualitative and quantitative information about the tsunami, including tsunami wave interaction with ocean floor bathymetric features, and neighboring coastlines. Tsunami model amplitude information is shown color-coded on top of blue-shaded sea floor bathymetry.

Additional Resources:
Pacific Tsunami Warning Center event page
USGS event page

For media inquiries:

PMEL and NOAA contacts

When using information from this page, please credit NOAA / PMEL / Center for Tsunami Research