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Home » Special Events » Magnitude 3.7 earthquake near Lake Henshaw, Southern California
last updated: 05/06/08 08:58.50 (PDT)
On Sunday May 4 2008 at 11:16 AM (PDT) the USArray seismic network recorded an earthquake (preliminary mb 3.7) located near Lake Henshaw.
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, MONP2) for the USArray is 47 km (0.42 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: | Sunday May 4, 2008 |
| Local Time: | 11:16 AM PST |
| Universal Time: | 05/04/08 (125) 18:16.30 UTC |
| Magnitude: | 3.7 mb |
| Latitude: | 33.2150 |
| Longitude: | -116.7410 |
| Depth: | 4 km |
| Author: | QED |
| Authoritative: | yes |
Waveforms
You may view plots showing this event as recorded by USArray instruments:
- Vertical components from the closest 37 USArray station that recorded the event across the whole network
- 3 components recorded by the closest USArray station to the event
Proximity to Population Centers
- 3 km (2 miles) SE (143°) from Lake Henshaw, CA
- 5 km (3 miles) NNE (32°) from Mesa Grande, CA
- 19 km (12 miles) SE (144°) from Palomar Observatory, CA
- 33 km (21 miles) ENE (72°) from Escondido, CA
- 48 km (30 miles) SE (132°) from Temecula, CA
- 61 km (38 miles) NE (38°) from San Diego, CA
News Links
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).
