Every countryJapan

Japan earthquakes in 1909

10 earthquakes of magnitude 4.5 or more were located in Japan in 1909. The largest: M7.5 18 km SE of Honmachi, Japan, Nov 10, 1909.

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

19081910

Map

Where every quake of 1909 was located in Japan. Select one for its page.

Open the live map with earthquakes

Every quake of 1909

Magnitude 4.5 and up, newest first.

Month by month

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

MonthQuakesLargestWhere
January 19090
February 19090
March 190947.1150 km ESE of Hasaki, Japan
April 19090
May 19090
June 19090
July 190915.812 km W of Ichihara, Japan
August 190926.923 km SSE of Ono, Japan
September 190926.624 km S of Shizunai-furukawach?, Japan
October 19090
November 190917.518 km SE of Honmachi, Japan
December 19090

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 1909

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.