| Magnitude | 5.5 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | 20.126, 121.392 |
| UTC time | 1983-10-04 03:10:01.370 |
Earthquake details
Tuesday, October 4, 1983 Earthquake
The earthquake hit Philippines on Tuesday, October 4, 1983 at 03:10 UTC with a magnitude of 5.5. The closest known location in the current dataset is Aparri (Philippines - PH), about 198.7 km away. The epicenter is located at longitude 121.392 and latitude 20.126.
| Location | Aparri |
| Country | Philippines (PH) |
| Severity | Strong |
Earthquake map 1983-10-04
Closest countries
The 12 closest cities near the epicenter.
| Aparri | 198.7 km |
| Hengchun | 219.6 km |
| Laoag | 230.4 km |
| San Nicolas | 233.0 km |
| Batac City | 246.4 km |
| Solana | 277.1 km |
| Donggang | 278.1 km |
| Tuguegarao City | 281.6 km |
| Chaozhou | 283.9 km |
| Taito | 294.3 km |
| Kaohsiung City | 298.9 km |
| Vigan | 303.1 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.8
Aparri
Philippines · 2026-08-19 04:22 UTC
108.6 km
M 4.5
Laoag
Philippines · 2025-12-05 19:37 UTC
240.6 km
M 4.9
Laoag
Philippines · 2025-11-27 03:10 UTC
202.4 km
M 4.6
Laoag
Philippines · 2025-11-22 17:18 UTC
254.9 km
M 4.2
Aparri
Philippines · 2025-11-02 08:32 UTC
118.9 km
M 4.6
Aparri
Philippines · 2025-09-22 20:33 UTC
122.8 km
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