| Magnitude | 5.1 |
| Alert | Strong |
| Depth | 46.0 km |
| Coordinates | 17.212, 122.432 |
| UTC time | 1977-07-21 18:55:34.600 |
Earthquake details
Thursday, July 21, 1977 Earthquake
The earthquake hit Philippines on Thursday, July 21, 1977 at 18:55 UTC with a magnitude of 5.1. The closest known location in the current dataset is Ilagan (Philippines - PH), about 58.2 km away. The epicenter is located at longitude 122.432 and latitude 17.212.
| Location | Tuguegarao City |
| Country | Philippines (PH) |
| Severity | Strong |
Earthquake map 1977-07-21
Closest countries
The 12 closest cities near the epicenter.
| Ilagan | 58.2 km |
| Tuguegarao City | 87.7 km |
| Solana | 92.7 km |
| Ramon | 106.7 km |
| Santiago | 110.7 km |
| Aglipay | 116.2 km |
| Aparri | 152.6 km |
| Solano | 154.0 km |
| Bayombong | 159.0 km |
| Dupax Del Norte | 173.5 km |
| Tagudin | 213.8 km |
| La Trinidad | 213.8 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.1
Santiago
Philippines · 2025-11-28 10:16 UTC
93.6 km
M 4.5
Tuguegarao City
Philippines · 2025-11-07 10:25 UTC
76.0 km
M 4.7
Tuguegarao City
Philippines · 2025-10-10 16:54 UTC
33.1 km
M 4.2
Tuguegarao City
Philippines · 2025-05-04 06:12 UTC
91.7 km
M 4.4
Santiago
Philippines · 2025-04-30 22:15 UTC
93.2 km
M 4.7
Tuguegarao City
Philippines · 2024-07-15 23:19 UTC
31.7 km
M 4.5
Tuguegarao City
Philippines · 2024-05-15 10:06 UTC
31.3 km
M 4.3
Ilagan
Philippines · 2023-12-31 00:13 UTC
74.9 km
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