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Japan earthquakes in 1971

65 earthquakes of magnitude 4.5 or more were located in Japan in 1971. The largest: M7.0 90 km SSE of Honchō, Japan, Aug 2, 1971.

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

19701972

Map

Where every quake of 1971 was located in Japan. Select one for its page.

Open the live map with earthquakes

Every quake of 1971

Magnitude 4.5 and up, newest first.

The largest

The 25 largest of 1971 in Japan.

Month by month

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

MonthQuakesLargestWhere
January 197155.922 km SW of Tahara, Japan
February 197145.8162 km ENE of Noda, Japan
March 197175.9Izu Islands, Japan region
April 197166.168 km E of Onagawa Chō, Japan
May 197166.224 km SE of Kushima, Japan
June 197166.0129 km WNW of Fukaura, Japan
July 197185.6133 km ESE of Yamada, Japan
August 197177.090 km SSE of Honchō, Japan
September 197186.3119 km E of Yamada, Japan
October 197155.7249 km SE of Shing?, Japan
November 197136.2102 km NE of Tatsugō, Japan
December 19710

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 1971

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.