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Water Level Data from National Tsunami Warning Center Tide Gauges in Alaska and California

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: December 18, 2025 | Last Modified: 2016-08-25T00:00:00.000+00:00
The National Tsunami Warning Center (NTWC) of the National Weather Service (NWS), an organizational element of NOAA, operates and maintains a network of approximately seven coastal tide gauge stations as part of the NOAA Tsunami Program. The data collected are used to meet tsunami warning responsibilities. Included in this water level collection are preliminary 15-second water levels from six stations in Alaska (9450552: Craig, 9457526: Old Harbor, 9458912: Chignik, 9460261: Shemya, 9460901: Amchitka, 9462693: Akutan) and one in California (9411166: Ventura).

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