All earthquakesIdaho

Idaho earthquakes in 1975

33 earthquakes of magnitude 2.5 or more were located in Idaho in 1975. The largest: M6.1 17 km NE of Snowville, Utah, Mar 27, 1975.

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

19741976

Map

Where every quake of 1975 was located in Idaho. Select one for its page.

Open the live map with earthquakes

Every quake of 1975

Magnitude 2.5 and up, newest first.

The largest

The 25 largest of 1975 in Idaho.

Month by month

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

MonthQuakesLargestWhere
January 19750
February 19750
March 1975166.117 km NE of Snowville, Utah
April 197574.719 km SW of Malad City, Idaho
May 19750
June 197523.317 km ESE of Yellow Pine, Idaho
July 19750
August 197513.617 km WSW of Malad City, Idaho
September 197534.016 km NE of Snowville, Utah
October 19750
November 197513.014 km E of Snowville, Utah
December 197533.143 km NNW of Stanley, Idaho

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

Idaho nowWorldwide in 1975

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.