Episode 2 of 3
Cascadia Megathrust Rupture
- When
- January 26, 1700
- Where
- Cascadia subduction zone
- Part of
- 1700 Cascadia Earthquake
A magnitude 8.7–9.2 earthquake ruptured the Cascadia subduction zone on January 26, 1700, at approximately 9:00 PM Pacific Time.
The megathrust earthquake involved the Juan de Fuca plate from mid-Vancouver Island to northern California. The fault slipped an average of 20 meters along a rupture approximately 1,000 kilometers long.
Sources
- 1700 Cascadia earthquake Wikipedia, revision of 2026-08-31
Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.