Earthquake LogM7.8 earthquake, Gulf of Alaska, 1988-03-06
MagnitudeM7.8mw
This page is updated only once a day and is not an alert service. For current earthquake and tsunami information, check the Japan Meteorological Agency, the USGS and your local authorities.
Depth10 km
Time (UTC)1988-03-06 22:35
Rank in 19881 / 122among M6+
Rank since 1900192 / 14,458
Energy vs an M6×501approx.
Gulf of Alaska · 56.95, -143.03
M6.5+ within 300 km (largest first)
M7.9
M7.8
M6.9
M6.9
Earlier M6+ within 300 km
| Event | Time (UTC) | Depth | Place |
|---|---|---|---|
| M7.9 1987-11-30 | 1987-11-30 19:23 | 10 km | 200 km WSW of Yakutat, Alaska |
| M6.9 1987-11-17 | 1987-11-17 08:46 | 10 km | Gulf of Alaska |
| M6.2 1970-02-24 | 1970-02-24 08:05 | 17 km | 165 km SE of Cordova, Alaska |
| M6.1 1965-09-30 | 1965-09-30 23:47 | 20 km | 171 km SE of Cordova, Alaska |
Energy ratio uses the rule that one magnitude unit is about 32 times the energy. Magnitudes and locations are USGS values and can differ from national agencies. Older records are less complete and less precise.