Canary SFS — Cascadia Arc Index Monitor

MAP LEGEND

Arc Signal Oblique

Zone-targeted seismic forecast · AmpZ & EI shown

EXTREME — Deep Crimson

AmpZ ≥ 2.5 · EI ≥ 98 · Max alert

Live Earthquake

Click dot to view USGS details & event page

■ Blue <-1σ ■ Green <1σ ■ Orange <2σ ■ Red ≥2σ

◆ CASCADIA INDEX

Date—

Level—

Energy Index—

Targeting—

■ No signal ■ Active ■ Elevated ■ Peak

● Cascadia Subduction Zone — Juan de Fuca / North American plate interface

Region: Vancouver Island → Cape Mendocino, CA

Trench: ~46.5°N, 125°W (offshore)

M9 recurrence: ~200–500 year cycle

Last full rupture: Jan 26, 1700