M4.9 earthquake Guam region
A magnitude 4.9 earthquake struck in the Guam region on Mon, Sep 5, 1983, 1:40 PM GMT+10 (03:40 UTC), 60 km (37 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1983-09-05 03:40:37 UTC
- Depth
- 60.1 km (37.3 mi), shallow
- Epicenter
- 12.237° N, 144.081° E
- Region
- Guam
- 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.
- Depth from
- FROM_LOCATION
Nearby
Within 100 km, magnitude 1.9 and up: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayGuam earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001y53. Read Tue, Sep 22, 2026, 10:04 AM UTC.