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Home » Special Events » Magnitude 5.4 earthquake in the Greater Los Angeles region, California
last updated: 07/29/08 12:59.06 (PDT)
On Tuesday July 29 2008 at 11:42 AM (PDT) the USArray seismic network recorded an earthquake (preliminary Mw 5.4) located in the Greater Los Angeles region, California.
Initial source parameters for this tremor are indicated below. The epicentral distance (i.e. distance separating the epicenter and the closest station in the recording network, BFS) for the USArray is 33 km (0.30 degrees).
If you felt the quake, the USGS would like to know. Please add your comments to the USGS page "Did you feel it?".
Location Maps
The red star denotes the earthquake epicenter. Triangle symbols are active stations at the time of the earthquake in the USArray (excluding ANSS backbone stations, which are represented by a diamond symbol) and colored by network. Gray lines are major rivers.
Global View:
Regional View:
| Transportable Array (TA) | |
| UC San Diego (AZ) | |
| CalTech (CI) | |
| UN Reno (NN) | |
| Uni. Utah (UU) | |
| ANSS backbone stations (US) |
Solution Parameters
| Solution Parameters | |
|---|---|
| Local Date: | Tuesday July 29, 2008 |
| Local Time: | 11:42 AM PST |
| Universal Time: | 07/29/08 (211) 18:42.15 UTC |
| Magnitude: | 5.4 Mw |
| Latitude: | 33.9550 |
| Longitude: | -117.7650 |
| Depth: | 14 km |
| Author: | ANF:vladik |
| Authoritative: | no |
Waveforms
You may view plots showing this event as recorded by USArray instruments:
- Vertical components from every eighth USArray station that recorded the event across the whole network
- 3 components recorded by the closest USArray station to the event: small | large
Proximity to Population Centers
- 4 km (3 miles) WSW (240°) from Chino Hills, CA
- 7 km (4 miles) SE (135°) from Diamond Bar, CA
- 8 km (5 miles) NNE (16°) from Yorba Linda, CA
- 12 km (7 miles) S (184°) from Pomona, CA
- 46 km (28 miles) ESE (104°) from Los Angeles Civic Center, CA
News Links
- USGS page for this event
- Reuters: "Earthquake jolts Los Angeles; no injuries reported"
- CNN: "Earthquake rocks Los Angeles"
Search the internet
To search the internet for more information about this event, click on the button below:
Current seismic activity measured by USArray
Click the links below to observe near real time maps of earthquakes recorded by the USArray deployment:
Further information
Learn more about the Array Network Facility (ANF) component of USArray, the USArray experiment, the EarthScope project, and the Incorporated Research Institutions for Seismology (IRIS).
