M4.3 earthquake 4 km NNE of Aromas, California
A magnitude 4.3 earthquake struck 4 km NNE of Aromas, California on Sat, Sep 14, 1963, 1:28 PM GMT-7 (20:28 UTC), 6 km (4 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS historic United States catalog
- Local time
- UTC
- 1963-09-14 20:28:11 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 36.925° N, 121.618° W
- Region
- California
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Maximum observed Modified Mercalli Intensity (MMI) I
From the USGS event page for ushis2623. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 0 in the 60 days after this one and 2 in the 30 days before it.
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ushis2623. Read Thu, Oct 1, 2026, 7:04 AM UTC.