The September 1, 1940 earthquake

M5.6near Hana, Hawaii

A magnitude 5.6 earthquake, 49.8 miles off Maui County. The 35th strongest in Hawaii’s record since 1900, and the strongest within 50 miles since a magnitude 5.6 on July 15, 1940.

The earthquake

Magnitude
5.6
surface-wave magnitude (ms)
Depth
—
Not recorded
Local time
Sunday, September 1, 1940
22:14 HST; 08:44 UTC on Sep 2, 1940
Epicentre
21.00°N, 155.25°W
49.8 mi from Maui County
In Hawaii’s record
35th
strongest of 39,637 since 1900
Within 50 miles
1
county; more on this date

USGS ANSS Comprehensive Earthquake Catalog, event ushis1331 (“81 km ENE of Hana, Hawaii”). The USGS event page carries the ShakeMap, felt reports and the official summary.

Counties and cities within 50 miles

Distance from the epicentre to each county boundary (zero when inside) and to each city centre.

Counties

Earthquakes around the epicentre

48 earthquakes of magnitude 3 or more within 50 miles of this epicentre since 1973.

Earthquakes of magnitude 3 or more within 50 miles of the epicentre, by year 1973: 2 1974: 3 1975: 0 1976: 1 1977: 1 1978: 1 1979: 1 1980: 0 1981: 0 1982: 1 1983: 0 1984: 0 1985: 2 1986: 4 1987: 0 1988: 5 1989: 0 1990: 0 1991: 1 1992: 0 1993: 0 1994: 0 1995: 1 1996: 1 1997: 0 1998: 2 1999: 1 2000: 1 2001: 0 2002: 1 2003: 0 2004: 0 2005: 6 6 2006: 1 2007: 0 2008: 0 2009: 0 2010: 0 2011: 0 2012: 0 2013: 2 2014: 2 2015: 1 2016: 1 2017: 0 2018: 2 2019: 0 2020: 0 2021: 0 2022: 1 2023: 0 2024: 1 2025: 2 19731978198319881993199820032008201320182023

Earlier earthquakes of magnitude 5 or more within 50 miles, strongest first

USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.