Alaska earthquakes in 1946
13 earthquakes of magnitude 2.5 or more were located in Alaska in 1946. The largest: M8.6 The 1946 Unimak Island, Alaska Earthquake, Apr 1, 1946.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1946 was located in Alaska. Select one for its page.
Every quake of 1946
Magnitude 2.5 and up, newest first.
- 6.2156 km SE of Akutan, Alaska · 25 km deep
- 6.857 km SSW of Atka, Alaska · 25 km deep
- 6.583 km SE of Akutan, Alaska · 30 km deep
- 6.2174 km WSW of Adak, Alaska · 35 km deep
- 6.2184 km SE of Akutan, Alaska · 25 km deep
- 6.0155 km S of False Pass, Alaska · 25 km deep
- 6.1136 km ESE of Akutan, Alaska · 25 km deep
- 6.2172 km SSE of False Pass, Alaska · 25 km deep
- 6.2136 km S of False Pass, Alaska · 25 km deep
- 6.6146 km ESE of Akutan, Alaska · 25 km deep
- 6.2136 km SE of Akutan, Alaska · 25 km deep
- 8.6The 1946 Unimak Island, Alaska Earthquake · 15 km deep
- 6.592 km SSE of Lowell Point, Alaska · 20 km deep
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1946 | 1 | 6.5 | 92 km SSE of Lowell Point, Alaska |
| February 1946 | 0 | ||
| March 1946 | 0 | ||
| April 1946 | 8 | 8.6 | The 1946 Unimak Island, Alaska Earthquake |
| May 1946 | 0 | ||
| June 1946 | 0 | ||
| July 1946 | 1 | 6.2 | 174 km WSW of Adak, Alaska |
| August 1946 | 0 | ||
| September 1946 | 0 | ||
| October 1946 | 1 | 6.5 | 83 km SE of Akutan, Alaska |
| November 1946 | 2 | 6.8 | 57 km SSW of Atka, Alaska |
| December 1946 | 0 |
What this means
The catalog is only as complete as the instruments of the time. Worldwide coverage of magnitude 5 and up dates from the 1960s, and of 4.5 from the 1990s; earlier years hold the large quakes and the ones near a station, so a low count in an early year means fewer instruments, not a quiet earth.
By year
Every year the USGS catalog covers.
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- 2010s2010201120122013201420152016201720182019
- 2000s2000200120022003200420052006200720082009
- 1990s1990199119921993199419951996199719981999
- 1980s1980198119821983198419851986198719881989
- 1970s1970197119721973197419751976197719781979
- 1960s1960196119621963196419651966196719681969
- 1950s1950195119521953195419551956195719581959
- 1940s1940194119421943194419451946194719481949
- 1930s1930193119321933193419351936193719381939
- 1920s1920192119221923192419251926192719281929
- 1910s1910191119121913191419151916191719181919
- 1900s1900190119021903190419051906190719081909
Nearby
Sources
Earthquakes, magnitudes, depths, shaking estimates and felt reports from the U.S. Geological Survey Earthquake Hazards Program, read from its live feeds and its catalog back to 1900. Tsunami messages from NOAA’s tsunami warning centers.