M4.9 earthquake 42 km ENE of Cortes, Philippines
A magnitude 4.9 earthquake struck 42 km ENE of Cortes, Philippines on Tue, Apr 29, 1975, 1:44 AM GMT+8 (17:44 UTC), 66 km (41 mi) below the surface.
A larger quake followed: M5.8 40 km ENE of Santa Monica, Philippines. This one was a foreshock.
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
- 1975-04-28 17:44:34 UTC
- Depth
- 66.0 km (41.0 mi), shallow
- Epicenter
- 9.381° N, 126.566° E
- Region
- Philippines
- 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.
- Stations used
- 34
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.92 km WSW of Mabahin, Philippines · 18782 days ago · 90 km deep · 51 km away
- 5.119 km E of Burgos, Philippines · 18781 days ago · 77 km deep · 27 km away
- 5.032 km E of Cortes, Philippines · 18778 days ago · 33 km deep · 15 km away
- 4.848 km NE of Cortes, Philippines · 18774 days ago · 46 km deep · 19 km away
- 5.216 km ESE of Union, Philippines · 18761 days ago · 68 km deep · 49 km away
- 5.756 km ENE of Santa Monica, Philippines · 18747 days ago · 33 km deep · 96 km away
- 5.840 km ENE of Santa Monica, Philippines · 18747 days ago · 33 km deep · 88 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000au6 (also filed as iscgem730741). Read Wed, Sep 30, 2026, 10:23 AM UTC.