M5.0 earthquake 4 km N of Maslog, Philippines
A magnitude 5.0 earthquake struck 4 km N of Maslog, Philippines on Wed, Jul 4, 1973, 4:28 AM GMT+8 (20:28 UTC), 60 km (37 mi) below the surface.
A larger quake followed: M5.3 18 km ENE of Alugan, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.0 (mb), moderate
- Local time
- UTC
- 1973-07-03 20:28:08 UTC
- Depth
- 60.0 km (37.3 mi), shallow
- Epicenter
- 12.187° N, 125.236° 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
- 16
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.0 and up: 7 in the 60 days after this one and 8 in the 30 days before it.
After
- 4.55 km NE of Sulat, Philippines · 19437 days ago · 103 km deep · 47 km away
- 5.318 km ENE of Alugan, Philippines · 19437 days ago · 47 km deep · 45 km away
- 5.22 km NW of Alugan, Philippines · 19432 days ago · 33 km deep · 25 km away
- 5.330 km ENE of San Policarpo, Philippines · 19419 days ago · 33 km deep · 60 km away
- 5.26 km W of Can-Avid, Philippines · 19419 days ago · 33 km deep · 28 km away
- 4.66 km NE of Mapanas, Philippines · 19419 days ago · 90 km deep · 38 km away
- 5.24 km E of Arteche, Philippines · 19390 days ago · 33 km deep · 24 km away
Before
- 5.43 km SSE of San Policarpo, Philippines · 19441 days ago · 33 km deep · 31 km away
- 5.24 km ESE of Hipadpad, Philippines · 19441 days ago · 33 km deep · 10 km away
- 5.24 km E of San Policarpo, Philippines · 19441 days ago · 40 km deep · 34 km away
- 5.35 km W of Oras, Philippines · 19441 days ago · 56 km deep · 18 km away
- 5.41 km NW of Arteche, Philippines · 19441 days ago · 51 km deep · 20 km away
- 6.5Samar, Philippines · 19441 days ago · 33 km deep · 10 km away
- 6.03 km ENE of Arteche, Philippines · 19441 days ago · 44 km deep · 23 km away
- 5.336 km ENE of Maydolong, Philippines · 19463 days ago · 20 km deep · 86 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00002hk. Read Thu, Sep 24, 2026, 12:35 PM UTC.