Active tsunami warnings
All clear - no active tsunami warning for California
We monitor the US National Tsunami Warning Center and GDACS continuously and will show any new alert here the moment it is issued. Get instant tsunami alerts with the QuakeMate app.
California faces tsunami risk from large offshore Pacific earthquakes. The map above shows the live tsunami layer and recent offshore quakes near California. The strongest recent earthquake nearby was M 5.6 near 11 km N of Redwood Valley, CA.
Use this page to check whether there is a tsunami warning in California today, see the current tsunami risk and recent offshore earthquakes, and understand what to do if a warning is issued. For instant tsunami and earthquake alerts in California the moment they happen, the free QuakeMate tsunami & earthquake alert app sends real-time push notifications.
Tsunami alert levels
Dangerous coastal flooding and powerful currents likely. Move to high ground or inland now.
A tsunami is possible. Stay alert and be ready to act.
Strong currents or waves dangerous near the water. Stay away from the coast.
Tsunamis in California: FAQ
Is there a tsunami warning in California right now?
There is no active tsunami warning being tracked for California right now. This page updates automatically from the US National Tsunami Warning Center and GDACS.
Can earthquakes cause a tsunami in California?
Yes. Large, shallow offshore earthquakes (roughly M7+) along the Pacific are the main tsunami trigger for California. The Cascadia, Alaska-Aleutian and other Pacific subduction zones can all send waves toward the US West Coast and Hawaii.
What should I do during a tsunami warning in California?
If a tsunami warning is issued, move immediately to high ground or far inland, away from the coast, harbours and rivers, and follow official local guidance - do not wait to see the wave. The QuakeMate app can alert you the moment a warning is issued near you.
Where do tsunami warnings for California come from?
QuakeMate aggregates the US National Tsunami Warning Center, the Pacific Tsunami Warning Center and the global GDACS system. Local agencies issue the official guidance.
Is there a tsunami alert app for California?
Yes. QuakeMate is a free iOS app that sends real-time tsunami warnings and major-earthquake alerts for California, with a live map of offshore activity. Download it at quakemate.app/download.
Other hazards in California
Tsunami & earthquake alerts for California
QuakeMate sends real-time alerts for major earthquakes and tsunami warnings near you - free on iOS.