Magnitude 8.0 quake near the coast of central Peru

Last updated: 2018-03-26 (84) 17:50:57 UTC

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The Anza group at the University of California San Diego operates a broadband seismograph network consisting of 17 three component broadband seismograph stations centered near Anza, California (see map).

On Wednesday August 15 2007 at 4:40 PM (PDT) we recorded an earthquake (preliminary Mw 8.0) located near the coast of central Peru. A tsunami warning has been issued for the region.

If you have felt this quake, the USGS would like to know. Please add your comments to the USGS page "Did you feel it?".

View the most recent map of local events near San Diego or a slightly wider regional view of events recorded by ANZA, or a map of events recorded by ANZA from around the globe.

Initial source parameters for this tremor are indicated below. The epicentral distance (i.e. the distance separating the epicenter and the closest station in the recording network) for Anza is 6659 km (59.82 degrees).

This map shows the mainshock as a red star. Associated aftershocks are orange stars. Anza network stations are yellow triangles. Gray lines are major rivers.

Event Map

Global mecator event map

Regional Event Map With Aftershocks

Regional mecator event map with aftershocks plotted

Event Parameters

Main event in red, aftershocks in orange.

Aftershock list last updated August 16, 2007 9:11AM (PDT). There may be further aftershocks for this event, but they are not plotted on the Regional Event Map above or in the table below.

Latitude	Longitude	Origin time (UTC)	Origin time (PDT)	Depth (km)	Magnitude	Author
-13.358	-76.522	08/15/07 (227) 23:40.56	08/15/07 (227) 4:40 PM	30.2	8.0 Mw	QED
-13.235	-76.400	08/16/07 (228) 00:02:40	08/15/07 (227) 5:02 PM	26.6	5.6 Mb	QED
-14.218	-76.081	08/16/07 (228) 00:19:14	08/15/07 (227) 5:19 PM	35.0	5.8 Mb	QED
-13.307	-76.486	08/16/07 (228) 01:02:23	08/15/07 (227) 6:19 PM	30.5	5.8 Mb	QED
-14.086	-76.546	08/16/07 (228) 01:35:40	08/15/07 (227) 6:35 PM	35.0	5.4 Mb	QED
-13.615	-75.922	08/16/07 (228) 02:17:10	08/15/07 (227) 7:17 PM	37.4	5.0 Mb	QED
-13.486	-76.516	08/16/07 (228) 02:54:20	08/15/07 (227) 7:54 PM	35.0	5.0 Mb	QED
-13.585	-76.533	08/16/07 (228) 04:04:10	08/15/07 (227) 9:04 PM	35.0	5.6 Mb	QED
-13.338	-76.874	08/16/07 (228) 04:16:48	08/15/07 (227) 9:16 PM	14.7	5.0 Mb	QED
-13.518	-75.725	08/16/07 (228) 04:23:19	08/15/07 (227) 9:23 PM	28.7	5.2 Mb	QED
-14.250	-76.061	08/16/07 (228) 05:16:58	08/15/07 (227) 10:16 PM	35.0	6.3 Mw	QED
-14.095	-76.735	08/16/07 (228) 06:10:46	08/15/07 (227) 11:10 PM	35.0	5.0 Mb	QED
-13.504	-77.031	08/16/07 (228) 06:43:13	08/15/07 (227) 11:43 PM	12.0	4.5 Mb	QED
-13.244	-77.099	08/16/07 (228) 07:46:49	08/16/07 (228) 12:46 AM	35.0	4.7 Mb	QED
-14.127	-76.226	08/16/07 (228) 09:02:10	08/16/07 (228) 2:02 AM	35.0	4.9 Mb	QED
-14.009	-75.984	08/16/07 (228) 09:43:53	08/16/07 (228) 2:43 AM	35.0	5.3 Mb	QED
-14.395	-76.154	08/16/07 (228) 11:35:30	08/16/07 (228) 4:35 AM	35.0	6.0 Mw	QED
-13.453	-76.691	08/16/07 (228) 15:11:23	08/16/07 (228) 8:11 AM	36.7	5.4 Mb	QED

* The location and magnitude determined for this event are preliminary and are subject to change upon further review of seismic data.

You may also view a plot showing

Of local interest:

We operate a broadband station on Santa Margarita Ecological Reserve. At 16:51 (PDT) station SMER recorded the P wave from this event. Here is a view of that event as picked by our analyst. A red P indicates a P wave arrival, a red S indicates an S wave arrival.

3 component seismometer recordings at Santa Margarita Ecological Reserve

View a larger image showing the waveforms recorded at Santa Margarita Ecological Reserve.

Visit the IRIS website with additional links to seismic data for this event.

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Learn more about the Anza group (including who works here, other networks, nuclear tests in China/India/Pakistan).
Learn more about the ANZA network (includes more station information, research, etc).