Alaska earthquakes in 1938
12 earthquakes of magnitude 2.5 or more were located in Alaska in 1938. The largest: M8.2 1938 Semidi Islands, Alaska Earthquake, Nov 10, 1938.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1938 was located in Alaska. Select one for its page.
Every quake of 1938
Magnitude 2.5 and up, newest first.
- 5.573 km WSW of Nanwalek, Alaska · 100 km deep
- 5.9182 km SE of Perryville, Alaska · 15 km deep
- 6.319 km SW of Old Harbor, Alaska · 25 km deep
- 6.9105 km ESE of Perryville, Alaska · 35 km deep
- 6.0168 km SE of Chignik, Alaska · 15 km deep
- 5.963 km S of Sand Point, Alaska · 40 km deep
- 6.1149 km S of Akhiok, Alaska · 15 km deep
- 5.9124 km SSW of Akhiok, Alaska · 15 km deep
- 6.6104 km SSE of Perryville, Alaska · 35 km deep
- 8.21938 Semidi Islands, Alaska Earthquake · 35 km deep
- 6.156 km SSW of Unalaska, Alaska · 35 km deep
- 5.8246 km SW of Adak, Alaska · 25 km deep
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1938 | 1 | 5.8 | 246 km SW of Adak, Alaska |
| February 1938 | 0 | ||
| March 1938 | 0 | ||
| April 1938 | 0 | ||
| May 1938 | 0 | ||
| June 1938 | 0 | ||
| July 1938 | 1 | 6.1 | 56 km SSW of Unalaska, Alaska |
| August 1938 | 0 | ||
| September 1938 | 0 | ||
| October 1938 | 0 | ||
| November 1938 | 7 | 8.2 | 1938 Semidi Islands, Alaska Earthquake |
| December 1938 | 3 | 6.3 | 19 km SW of Old Harbor, 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.