en.wikipedia.org/wiki/Juan_de_Fuca_plate
1 correction found
Japanese records indicate that a tsunami occurred in Japan on 26 January 1700, which was likely caused by this earthquake.
The Japan tsunami associated with the 1700 Cascadia earthquake is documented on January 27, 1700 in Japan, not January 26.
Full reasoning
Authoritative NOAA and USGS/DOI sources date the Japanese tsunami to January 27, 1700. NOAA’s JetStream page for the Cascadia subduction zone states: “January 27, 1700 … a tsunami flooded the shores of Japan.” NOAA’s Science On a Sphere page likewise says, “Just before midnight on January 27, 1700 a tsunami struck the coasts of Japan.”
This date difference makes sense physically: the Cascadia earthquake happened around 9:00 p.m. on January 26, 1700 in North America, and the tsunami took about 9 hours to cross the Pacific. That puts the arrival in Japan on January 27 local time, not January 26.
So the article’s sentence is off by one day for the Japan date, even though the associated earthquake occurred on January 26 in Cascadia.
3 sources
- JetStream Max: Cascadia Subduction Zone | National Oceanic and Atmospheric Administration
"January 27, 1700 ... On this date, a tsunami flooded the shores of Japan."
- Tsunami Historical Series: Cascadia - 1700 - Science On a Sphere
"Just before midnight on January 27, 1700 a tsunami struck the coasts of Japan ... Its tsunami would cross the Pacific Ocean and reach Japan in about 9 hours".
- S. 50 | U.S. Department of the Interior
"Several villages recorded damage in Japan on January 27, 1700, from a wave that people living along the coast could not associate with strong ground shaking."