M6.9 earthquake 22 km SSW of Dicabisagan, Philippines
A magnitude 6.9 earthquake struck 22 km SSW of Dicabisagan, Philippines on Thu, Jul 21, 1977, 10:45 PM GMT+9 (13:45 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.9 (ms), strong
- Local time
- UTC
- 1977-07-21 13:45:54 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 16.882° N, 122.361° E
- Region
- Philippines
- Strongest shaking
- VI, strong shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- VI, strong shaking
- Peak ground acceleration
- 20.1% of gravity
- Peak ground velocity
- 3.1 cm/s
- Map
- Automatic
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
- OPERATOR_ASSIGNED
- Stations used
- 224
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 9 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.731 km E of Dicabisagan, Philippines · 17960 days ago · 33 km deep · 47 km away
- 5.114 km N of Dicabisagan, Philippines · 17960 days ago · 46 km deep · 37 km away
- 4.516 km SE of Dicabisagan, Philippines · 17959 days ago · 33 km deep · 20 km away
- 4.817 km ESE of Dicamay, Philippines · 17959 days ago · 85 km deep · 30 km away
- 5.131 km NNW of Dicabisagan, Philippines · 17959 days ago · 46 km deep · 52 km away
- 4.744 km NE of Dicabisagan, Philippines · 17958 days ago · 50 km deep · 66 km away
- 5.49 km ESE of Dicabisagan, Philippines · 17954 days ago · 41 km deep · 25 km away
- 5.154 km NE of Dicabisagan, Philippines · 17948 days ago · 33 km deep · 75 km away
- 5.042 km NE of Dicabisagan, Philippines · 17932 days ago · 33 km deep · 64 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000pts (also filed as gcmtc072177b, gcmt19770721134554, atlas19770721134555, iscgem696230). Read Tue, Sep 22, 2026, 8:24 AM UTC.