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In 1700, an earthquake with a magnitude of around 9.0 hit Washington, Oregon, and California. On estimate, this earthquake was 620 miles long and slipped 66 feet. It is likely this earthquake had lots of damage and high casualties. Source: [Timetoast]https://www.worldatlas.com/natural-disasters/the-biggest-earthquakes-in-us-history.html#h_95219778920661715571489017 -
In 1857, an earthquake of a magnitude of 7.9 hit California, happening across the San Andreas fault. This earthquake was about 225 miles, and reportedly caused lots of structural damage at Fort Tejon, uprooted trees, overflowing rivers, and only 2 casualties.
Source: [Timetoast]https://earthquake.usgs.gov/earthquakes/eventpage/ushis92/impact -
In 1868, an estimated 7.9 magnitude earthquake hit Hawaii, hitting areas near Pahala. This earthquake destroyed a lot of homes and stone walls. Due to the immense amounts of shaking, this earthquake caused landslides and mudslides. to form.
Source: [Timetoast]https://www.usgs.gov/observatories/hvo/news/volcano-watch-seismic-event-devastated-kau-150-years-ago#:~:text=This%20week%20marks%20150%20years,i%20on%20April%202%2C%201868. -
In 1906, a 7.9 magnitude earthquake struck San Francisco and the San Andreas fault in one of the deadliest earthquakes they've had. Lasting 296 miles, many buildings were destroyed and there is an estimated 3,000+ casualties. This earthquake also sparked several fires around the area.
Source: [Timetoast]https://www.conservation.ca.gov/cgs/earthquakes/san-francisco -
In 1946, a magnitude of 8.6 hit the Aleutian Islands in Alaska. Due to the earthquake, a tsunami formed around the area, effecting lighthouses. However, Hawaii suffered great damage from the tsunami as it migrated towards them.
Source: [Timetoast]https://www.worldatlas.com/natural-disasters/the-biggest-earthquakes-in-us-history.html#h_29366414626361715571503745 -
In 1957, a magnitude 8.6 earthquake hit South of the Andreanof Islands. As a result of the earthquake, a tsunami formed around Alaska and Hawaii destroying buildings, homes, and boats. Fortunately, no casualties were a result of these events. However, over 40 million dollars was needed to repair buildings.
Source: [Timetoast]https://www.worldatlas.com/natural-disasters/the-biggest-earthquakes-in-us-history.html#h_55579343430611715571515414 -
In 1964, the most powerful earthquake in North American history, hit Alaska with a magnitude of 9.2 destroyed several structures and caused 124 casualties. This earthquake also caused landmasses to rise up to 82 feet.
Source:[Timetoast]https://www.worldatlas.com/natural-disasters/the-biggest-earthquakes-in-us-history.html#h_1207315416861715571469268 -
In 1965, a magnitude of 8.7 hit Alaska and was soon followed by a tsunami that hit other nearby countries. However, damage was minimal in Alaska and there were no reported deaths.
Source:[Timetoast]https://www.worldatlas.com/natural-disasters/the-biggest-earthquakes-in-us-history.html#h_24241832023491715571497222 -
In 2002, a magnitude of 7.9 hit Alaska's Denali Fault. This earthquake caused a lot of landslides in the areas nearby. However, since hitting a sparse area, no deaths occurred and damage was reported as minimal.
Source: [Timetoast]https://pubs.usgs.gov/fs/old.2003/fs014-03/#:~:text=A%20powerful%20magnitude%207.9%20earthquake,structural%20damage%20and%20no%20deaths. -
In 2014, a magnitude 7.9 earthquake hit the Aleutian Islands. Despite having a high magnitude, no reports of major damage were known. A tsunami followed after, however it was reported this tsunami was very small and also only caused minimal damage.
Source: [Timetoast]https://www.earthscope-program-2003-2018.org/about/archived_events/m7.html