| Magnitude | 5.4 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | 17.678, 121.691 |
| UTC time | 1977-04-20 15:21:03.400 |
Earthquake details
Wednesday, April 20, 1977 Earthquake
The earthquake hit Philippines on Wednesday, April 20, 1977 at 15:21 UTC with a magnitude of 5.4. The closest known location in the current dataset is Solana (Philippines - PH), about 2.8 km away. The epicenter is located at longitude 121.691 and latitude 17.678.
| Location | Tuguegarao City |
| Country | Philippines (PH) |
| Severity | Strong |
Earthquake map 1977-04-20
Closest countries
The 12 closest cities near the epicenter.
| Solana | 2.8 km |
| Tuguegarao City | 7.7 km |
| Ilagan | 62.6 km |
| Aparri | 75.7 km |
| Ramon | 100.9 km |
| Santiago | 111.2 km |
| Batac City | 126.5 km |
| San Nicolas | 128.4 km |
| Laoag | 129.6 km |
| Aglipay | 132.5 km |
| Vigan | 138.8 km |
| Solano | 139.9 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
|
M 4.6
Laoag
Philippines · 2025-11-22 17:18 UTC
|
87.4 km |
|
M 4.7
Tuguegarao City
Philippines · 2025-10-10 16:54 UTC
|
68.0 km |
|
M 4.7
Aparri
Philippines · 2025-08-11 02:55 UTC
|
60.4 km |
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