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Japan earthquakes in 1938

72 earthquakes of magnitude 4.5 or more were located in Japan in 1938. The largest: M7.8 105 km E of Iwaki, Japan, Nov 5, 1938.

From the USGS catalog. Times are local to each quake.

19371939

Map

Where every quake of 1938 was located in Japan. Select one for its page.

Open the live map with earthquakes

Every quake of 1938

Magnitude 4.5 and up, newest first.

The largest

The 25 largest of 1938 in Japan.

Month by month

Counted by UTC date, which is how the catalog files them.

MonthQuakesLargestWhere
January 193836.517 km WSW of Tanabe, Japan
February 19380
March 193815.6Izu Islands, Japan region
April 193826.3197 km ESE of Naze, Japan
May 193837.769 km ESE of Kitaibaraki, Japan
June 193877.735 km N of Hirara, Japan
July 193835.775 km WSW of Itoman, Japan
August 193826.111 km ENE of Naze, Japan
September 193836.760 km ESE of Takahagi, Japan
October 193826.8202 km ENE of Miyako, Japan
November 1938347.8105 km E of Iwaki, Japan
December 1938126.5118 km ESE of ?funato, 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.

Nearby

Japan nowWorldwide in 1938

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.