CANARY

SFS

ARC HAZARD

forward 3 / 7 / 21 day hazard outlook

ALASKA ARC HAZARD

Projected short-term loading along the Alaska–Aleutian arc

HOW TO READ

Colored bands = projected loading for the selected window. Blue=lower · Red=high. White circles = M4+ earthquakes (past/current dates). Red line = trench / fault trace.

HAZARD LEVEL

Cool

Low

Building

Elevated

High

M4+ earthquake

SELECTED OUTLOOK

Date

—

Window

—

Arc status

—

Peak segment

—

Loading index

—

SEGMENT SUMMARY

CALENDAR

Cool

Low

Building

Elevated

High

LIVE USGS FEED —

EQ ON

Select a date…

METHOD

Arc Hazard converts forecast frames into projected loading per segment. Past/current dates display M4+ USGS earthquakes overlaid on the map. The 3 / 7 / 21-day windows accumulate projected loading into a forward hazard outlook. On the Cascadia / California page, the calendar tracks the broader Axial-linked corridor build-up rather than only a single local segment.

✕