SEISMIC WATCHEarth system intelligence
Coordinated universal time--:--:-- UTC
LIVE NETWORKConnecting to data sources
i
OFFICIAL TSUNAMI STATUSChecking U.S. warning centers…Loading NTWC and PTWC bulletins.
VERIFY AT TSUNAMI.GOV
STRONGEST EVENT
Waiting for USGS data
EVENTS IN VIEW
USGS reviewed + automatic
SHALLOW EVENTS
Less than 70 km depth
TSUNAMI-FLAGGED
USGS event flag · not an alert
GLOBAL ACTIVITY

Live seismic field

< M3M3–4.9M5–5.9M6+
Loading epicenters…Marker size = magnitude · Color = severity
SELECTED EVENT

Select an epicenter

MAGNITUDEMoment magnitude
ORIGIN TIME
DEPTH
COORDINATES
FELT REPORTS
MAX INTENSITY
USGS ALERT
INITIAL IMPACT SCREENINGAWAITING EVENT
GROUND SHAKING
SHALLOW SOURCE
TSUNAMI FLAG
Automated orientation only. Follow official emergency alerts and local authorities.
OPEN USGS EVENT PAGE
ACTIVITY TIMELINE

Magnitude over time

AVERAGE
NOW
DISTRIBUTION

Magnitude bands

SOURCE DEPTH

Depth profile

EVENTS
COASTAL READINESS

Natural tsunami warnings

!

If you are near the coast, do not wait for an official alert after any natural warning:

01Strong or long shaking02Sudden sea rise or retreat03Loud ocean roar
MOVE TO HIGH GROUND OR INLAND IMMEDIATELY