M3.7 earthquake 14 km WSW of Surup, Philippines
A magnitude 3.7 earthquake struck 14 km WSW of Surup, Philippines on Mon, Apr 21, 1986, 11:33 PM GMT+8 (15:33 UTC), 50 km (31 mi) below the surface.
A larger quake followed: M4.4 54 km SSE of Pondaguitan, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.7 (mb), minor
- Local time
- UTC
- 1986-04-21 15:33:59 UTC
- Depth
- 50.0 km (31.1 mi), shallow
- Epicenter
- 6.351° N, 126.024° 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.
- Depth from
- FROM_LOCATION
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.454 km SSE of Pondaguitan, Philippines · 14762 days ago · 33 km deep · 62 km away
- 5.320 km ENE of Lapuan, Philippines · 14757 days ago · 92 km deep · 23 km away
- 5.113 km NE of Panikian, Philippines · 14730 days ago · 49 km deep · 83 km away
- 5.266 km SE of Caburan, Philippines · 14723 days ago · 124 km deep · 90 km away
- 4.615 km E of Kalbay, Philippines · 14707 days ago · 87 km deep · 83 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002t33. Read Tue, Sep 22, 2026, 7:44 PM UTC.