M2.3 earthquake 8km WSW of Grapevine, CA
A magnitude 2.3 earthquake struck 8km WSW of Grapevine, CA on Mon, Jul 24, 1939, 12:41 AM GMT-8 (08:41 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M3.3 19km S of Santa Barbara, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.3 (ml), micro
- Local time
- UTC
- 1939-07-24 08:41:11 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 34.917° N, 119.017° W
- Region
- California
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 2.5 km horizontally, 31.6 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- Operator assigned
- Station coverage gap
- 145°
- Stations used
- 5
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 3.213km E of Buttonwillow, CA · 31818 days ago · 6 km deep · 60 km away
- 3.319km S of Santa Barbara, CA · 31795 days ago · 6 km deep · 98 km away
- 2.710km SSW of Gorman, CA · 31787 days ago · 6 km deep · 26 km away
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3365063. Read Tue, Sep 29, 2026, 2:50 PM UTC.