Alaska earthquakes in 1939
12 earthquakes of magnitude 2.5 or more were located in Alaska in 1939. The largest: M7.2 238 km SSE of Attu Station, Alaska, Sep 9, 1939.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1939 was located in Alaska. Select one for its page.
Every quake of 1939
Magnitude 2.5 and up, newest first.
- 6.075 km SW of Adak, Alaska · 35 km deep
- 5.7230 km SE of Attu Station, Alaska · 15 km deep
- 5.642 km N of Nikolski, Alaska · 35 km deep
- 7.2238 km SSE of Attu Station, Alaska · 15 km deep
- 6.1286 km ESE of Attu Station, Alaska · 35 km deep
- 6.3102 km SSW of False Pass, Alaska · 75 km deep
- 6.0249 km WNW of Attu Station, Alaska · 15 km deep
- 5.8122 km W of Adak, Alaska · 15 km deep
- 5.5160 km WSW of Adak, Alaska · 25 km deep
- 6.3128 km W of Adak, Alaska · 35 km deep
- 6.3108 km SSW of Akhiok, Alaska · 25 km deep
- 5.8112 km SE of False Pass, Alaska · 25 km deep
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1939 | 0 | ||
| February 1939 | 1 | 5.8 | 112 km SE of False Pass, Alaska |
| March 1939 | 0 | ||
| April 1939 | 0 | ||
| May 1939 | 3 | 6.3 | 128 km W of Adak, Alaska |
| June 1939 | 0 | ||
| July 1939 | 2 | 6.0 | 249 km WNW of Attu Station, Alaska |
| August 1939 | 2 | 6.3 | 102 km SSW of False Pass, Alaska |
| September 1939 | 3 | 7.2 | 238 km SSE of Attu Station, Alaska |
| October 1939 | 0 | ||
| November 1939 | 0 | ||
| December 1939 | 1 | 6.0 | 75 km SW of Adak, Alaska |
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.
- 2020s2020202120222023202420252026
- 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.