Major earthquake
M7.1 Earthquake — 113 km SE of McCarthy, Alaska
1979-02-28 21:27 UTC · 60.64°, -141.59°
A magnitude 7.1 (major) earthquake struck 113 km SE of McCarthy, Alaska on 1979-02-28 21:27 UTC, at a depth of 15 km. See it live on Earth Live's real-time 3D globe.
M7.1
Magnitude
15 km
Depth
673.6K t
TNT equivalent
VII
Max intensity (MMI)
Source: USGS event page. The TNT equivalent is computed from the magnitude with the standard Gutenberg–Richter energy relation; all other figures are USGS's own.
This area's earthquake history
In the year before this quake, USGS recorded 23 earthquakes of magnitude 2.5 or more within 300 km.
Strongest recorded within 300 km since 1900:
- M7.9 — 200 km WSW of Yakutat, Alaska · 1987-11-30
- M7.0 — 2025 Hubbard Glacier Earthquake · 2025-12-06
- M6.9 — Gulf of Alaska · 1987-11-17
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