M3.0 earthquake 6km NE of Grapevine, CA
A magnitude 3.0 earthquake struck 6km NE of Grapevine, CA on Sat, Sep 30, 1944, 6:16 PM GMT-7 (01:16 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M3.2 6km W of Oxnard, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.0 (ml), micro
- Local time
- UTC
- 1944-10-01 01:16:00 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 34.987° N, 118.887° 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 3.7 km horizontally, 31.6 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- Operator assigned
- Station coverage gap
- 256°, poorly surrounded by stations
- 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: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.65km WNW of Castaic, CA · 29908 days ago · 11 km deep · 57 km away
- 2.612km WNW of Port Hueneme, CA · 29903 days ago · 6 km deep · 99 km away
- 2.810km NE of Ventura, CA · 29902 days ago · 8 km deep · 76 km away
- 3.26km W of Oxnard, CA · 29900 days ago · 16 km deep · 94 km away
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3364319. Read Tue, Sep 22, 2026, 9:42 PM UTC.