August 27, 1904 Earthquake: Rampart, Alaska, United States

Name: August 27, 1904 Earthquake: Rampart, Alaska, United States
Start: 1904-08-27
Location: Rampart, Alaska, United States

August 27, 1904 · M8.3

A magnitude 8.3 earthquake struck Rampart, Alaska, United States on August 27, 1904 at 21:56 UTC.

Map

Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.

The earthquake

Date: August 27, 1904
Time: 21:56 UTC
Place: Rampart, Alaska, United States
Magnitude: 8.3 (Ms)
Magnitude scales: Ms 8.3 · mb 7.8
Intensity: VI, strong shaking, on the Modified Mercalli scale
Tsunami: None recorded
Epicenter: 64.660° N, 148.080° W
Country: United States
Region: North America and Hawaii

Ms: surface-wave magnitude. mb: body-wave (P-wave) magnitude. NCEI’s headline magnitude is the best of these for the earthquake.

The toll

The record gives no deaths, injuries or damage for this earthquake.

Sources NCEI cites

The publications NCEI lists for this record. The numbers match the “reference #” notes in its account above.

#542 Stover, Carl W., and Jerry L. Coffman (1993). Seismicity of the United States, 1568-1989 (Revised), U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, Washington, D.C., 418 p.
#130 Gutenberg, B. and C.F. Richter (1965). Seismicity of the earth and associated phenomena. Princeton University Press, 1954 (second edition); Hafner Publishing Company, New York and London (facsimile edition), 310 p.
#88 Duda, Seweryn J. (1965). Secular seismic energy release in the circum-Pacific belt. Tectonophysics, vol. 2, no. 5, p. 409-452. DOI:10.1016/0040-1951(65)90035-1
#1002 Lomnitz, Cinna (1974). Development in Geotectonics #5, Global Tectonics and Earthquake Risk, Elsevier Scientific Publishing Co., Amsterdam, The Netherlands, 1974.
#1179 Meyers, H., R.J. Brazee, J.L. Coffman, and S.R. Lessig (1976). An Analysis of Earthquake Intensities and Recurrence Rates in and near Alaska. NOAA Technical Memorandum EDS NGSDC-3. National Oceanic and Atmospheric Administration, Boulder, Colorado. 101 p.

Other significant earthquakes nearby

Within 200 km, the deadliest first.

Significant earthquakes of 1904 The 1900s Every quake the USGS located in 1904 Recent earthquakes near here This day in weather history

Sources

Significant earthquakes from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-10-01. NCEI earthquake 2690.