Earthquake reference
7 km NNW of La Mesa, CA
USGS recorded this 1.01 magnitude event near 7 km NNW of La Mesa, CA at 2026-07-31T20:13:38.210000+00:00. The published hypocentral depth is -0.27 km and the review status is reviewed. Event parameters can be revised as additional observations are processed. Nearby airports and postal locations on this page are calculated spatial references only; they do not establish administrative jurisdiction, damage, causation or future risk. This record is not an earthquake forecast or emergency alert.
Key facts
- Magnitude
- 1.01
- Magnitude type
- ml
- Occurred at
- 2026-07-31T20:13:38.210000+00:00
- Updated at
- 2026-07-31T21:01:30.474000+00:00
- Review status
- reviewed
- Event type
- quarry blast
- Tsunami flag
- No
- Significance
- 16
- Network
- ci
- Latitude
- 32.8203333333333
- Longitude
- -117.063333333333
- Depth (km)
- -0.27
- USGS event page
- https://earthquake.usgs.gov/earthquakes/eventpage/ci40664378
Upstream revision context
USGS event revision
This timeline contains versions captured by DataOfWorld; it is not a complete official revision archive.
| Updated | Status | Payload digest |
|---|---|---|
| 2026-07-31T21:01:30.474000+00:00 | reviewed | ca670f8e7c36 |
Associated event IDs: ci40664378
Field-level provenance
Sources for this profile
Dates and licenses apply to the specific facts and series supplied by each source.
USGS Earthquake Hazards Program
- Applicable date
- 2026-07-31
- Dataset version
- 63e48b3f8d6c
- License
- United States public domain
- Attribution
- U.S. Geological Survey
DataOfWorld deterministic earthquake profile template
- Applicable date
- 2026-07-31
- Dataset version
- earthquake-profile-v1
- License
- Original DataOfWorld text
- Attribution
- DataOfWorld
Reference data can change. Verify consequential decisions against the original source.