All earthquakesAlaska

Alaska earthquakes in 1929

25 earthquakes of magnitude 2.5 or more were located in Alaska in 1929. The largest: M7.9 93 km NW of Attu Station, Alaska, Dec 17, 1929.

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

19281930

Map

Where every quake of 1929 was located in Alaska. Select one for its page.

Open the live map with earthquakes

Every quake of 1929

Magnitude 2.5 and up, newest first.

Month by month

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

MonthQuakesLargestWhere
January 192916.135 km E of Healy, Alaska
February 192916.547 km SE of False Pass, Alaska
March 192927.8234 km SSW of Nikolski, Alaska
April 19290
May 192916.472 km SE of Adak, Alaska
June 192915.9246 km SE of Attu Station, Alaska
July 1929137.388 km WSW of Adak, Alaska
August 192915.9131 km SW of Adak, Alaska
September 19290
October 192926.1166 km S of False Pass, Alaska
November 192916.0234 km SSE of Atka, Alaska
December 192927.993 km NW of Attu Station, 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.

Nearby

Alaska nowWorldwide in 1929

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.