NEOWAVE Regional Tsunami Model: Maritime Hazards: Guam: Apra Harbor

Sea Surface Height Sea State Surface Currents

Non-hydrostatic Evolution of Ocean WAVEs (NEOWAVE) regional tsunami model for Apra Harbor on the island of Guam, categorized by earthquake magnitude and subduction zone. Offshore data are gridded at approximately 90-m resolution while in-harbor data are approximately 9-m resolution. Includes offshore surge and current based on maximum considered tsunamis as well as in-harbor hazard maps of surge, drawdown, and current for hypothetical advisory and warning-level tsunamis from potential sources at the Mariana, Nankai, Philippine, and New Guinea subduction zones. Data are referenced to the WGS84 coordinate system, and the vertical datum is mean sea level (MSL). This shock-capturing, dispersive wave model computes tsunami generation, propagation, and inundation for complex flow patterns in shelf and reef environments. It has been validated with analytical, laboratory, and field benchmarks and is approved by the National Tsunami Hazard Mitigation Program. These hazard maps cover tsunamis only; other potential hazards such as wind waves and swells would be additive to the surge, drawdown, and current described by these data.

Data and resources

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Additional information

Date (creation)	2019-07-25
Date (revision)	2019-07-25
Date (issued)	2020-02-19
Status	onGoing
Update frequency	asNeeded
Metadata language	en
License	The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, University of Hawaii, PacIOOS, NOAA, State of Hawaii nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
Source metadata	ISO 19115 XML
Last updated	2026-11-04
Created	2026-11-04
API	package_show