Japan earthquakes in 1940
16 earthquakes of magnitude 4.5 or more were located in Japan in 1940. The largest: M7.5 137 km WSW of Rishiri Town, Japan, Aug 2, 1940.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1940 was located in Japan. Select one for its page.
Every quake of 1940
Magnitude 4.5 and up, newest first.
- 5.573 km E of Ishinomaki, Japan · 35 km deep
- 6.651 km SE of Kamaishi, Japan · 44 km deep
- 6.118 km NNE of Tanabe, Japan · 50 km deep
- 6.183 km ENE of Hasaki, Japan · 25 km deep
- 5.8Volcano Islands, Japan region · 15 km deep
- 7.074 km NW of Hiratach?, Japan · 10 km deep
- 7.5137 km WSW of Rishiri Town, Japan · 15 km deep
- 6.0136 km SE of Katsuura, Japan · 15 km deep
- 5.7Izu Islands, Japan region · 15 km deep
- 6.2near the east coast of Honshu, Japan · 15 km deep
- 6.1Bonin Islands, Japan region · 20 km deep
- 5.897 km E of Mutsu, Japan · 55 km deep
- 6.186 km NE of Miyako, Japan · 35 km deep
- 6.059 km S of Shimoda, Japan · 15 km deep
- 6.7285 km ESE of Naze, Japan · 15 km deep
- 6.0161 km SE of Katsuura, Japan · 15 km deep
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1940 | 3 | 6.7 | 285 km ESE of Naze, Japan |
| February 1940 | 1 | 6.1 | 86 km NE of Miyako, Japan |
| March 1940 | 2 | 6.1 | Bonin Islands, Japan region |
| April 1940 | 0 | ||
| May 1940 | 0 | ||
| June 1940 | 2 | 6.2 | near the east coast of Honshu, Japan |
| July 1940 | 1 | 6.0 | 136 km SE of Katsuura, Japan |
| August 1940 | 3 | 7.5 | 137 km WSW of Rishiri Town, Japan |
| September 1940 | 0 | ||
| October 1940 | 0 | ||
| November 1940 | 3 | 6.6 | 51 km SE of Kamaishi, Japan |
| December 1940 | 1 | 5.5 | 73 km E of Ishinomaki, Japan |
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.