West Coast/Alaska Tsunami Warning Center, NOAA/NWS

Tsunami of 15 August 2007

A great earthquake with a moment magnitude of 8.0 (USGS magnitude) occurred at 2341 UTC 15 August 2007 (day 227). The earthquake was located 27 miles/43 km WNW of Chircha Alta, Peru (13.3°S, 76.5°W, 18.8 miles/30 km depth – USGS location).

The earthquake produced a tsunami that was recorded at tide gages monitored at the Tsunami Warning Centers. Many observatories provide data to the centers; such as the NOAA National Ocean Service, the Japanese Meteorological Agency, the U. of Hawaii Sea Level Center, the Chilean Navy, and the National Tidal Facility in Australia among others. Click on the site name to see a graph of the tsunami, when available. Listed wave heights are maximum amplitude in cm (above sea level). Observed Arrival time is the actual tsunami arrival time in UTC on gages where it could be determined. The Computed Arrival time is the estimated time of arrival computed at the West Coast/Alaska Tsunami Warning Center (WC/ATWC) based on the origin time and location. The Sample Interval column shows the time between samples.

For additional information about this tsunami see the Pacific Tsunami Warning Center's homepage .

Travel Time Map (click to enlarge)	Maximum Amplitude Graph (courtesy PMEL more here, click to enlarge)

Tide gage	Peak amplitude (above sea level in cm)	Observed Initial Arrival time (UTC)	Computed Initial Arrival time (UTC)	Initial motion	Sample Interval (min, Unless otherwise stated)	Data File (Julian Day Starts at  0000 UTC)
Iquique, Chile	15	0113	0110	rise	2	228
DART 32401, Chile	5	0032	0044	rise	1	227 228
Arica, Chile	36	0115	0115	rise	2	228
Antofagasta, Chile	16	0133	0133	rise	2	228
San Felix, Chile	27	0142	0148	rise	2	228
Caldera, Chile	19	0154	0150	rise	2	228
Coquimbo, Chile	27	0222	0214	rise	2	228
Valparaiso, Chile	18	0244	0241	rise	2	228
Juan Fernandez, Chile	20	0243	0253	rise	2	228
San Antonio, Chile	17	0254		rise(?)	2	228
Talchuano, Chile	35	0353	0341	rise	2	228
Cabo San Lucas, Mexico	7	0757	0744	rise	1	228
Santa Monica, CA	7	1053	1032	rise	1	228
Santa Barbara, CA	9	(?)	1043	(?)	1	228
Port San Luis, CA	8	1115	1046	rise	1	228
Port Reyes, CA	6	1126	1114	rise	1	228
Arena Cove, CA	4	1124	1119	rise	1	228
Crescent City, CA	16	(?)	1203	(?)	1	228
Hilo, HI	37	1223	1225	rise	1	228 229
Kawaihae, HI	11	1241	1237	rise	1	228 229
Kahului, HI	28	1247	1245	rise	1	228 229
Honolulu, HI	4	1255	1253	rise	1	228 229
Nawiliwili, HI	3	1259	1256	rise	1	228 229
PagoPago, Amer. Samoa	17	1350	1332	rise	1	228 229
Apia, West Samoa	13	1354	1347	rise	6	228 229
Port Angeles, WA	5	(?)	1401	(?)	1	228 229
Nukualofa, Tonga	3	(?)	1401	(?)	6	228 229
MidwayIsland	6	1540	1521	(?)	1	228 229
Sand Point, AK	8	1621	1559	rise	15 sec	228 229
Old Harbor, AK	10	1607	1606	rise	15 sec	228 229
Port Vila, Vanuatu	14	(?)	1635	(?)	1	228 229
Kwajalein, Marshall Islands	4	(?)	1654	(?)	1	228 229
Hanasaki, Japan	12	(?)	1929	(?)	1	228 229
Ofunato, Japan	4	2007	2000	rise	1	228 229
Naha, Japan	6	(?)	2213	(?)	1	228 229
Omaezaki, Japan	7	(?)	2035	(?)	1	228 229
Tosashimizu, Japan	13	(?)	2120	(?)	1	228 229
Ishigakijima, Japan	4	(?)	2222	(?)	1	228 229
Davao, Philippines	2	(?)	2229	(?)	1	228 229

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