As of 8 September 2026 there is no active tsunami warning for Costa Rica, and no tsunami alerts are active anywhere in the world. The strongest earthquake near Costa Rica in the last 30 days was magnitude 5.0; a tsunami usually needs a shallow offshore quake of about magnitude 7 or more. Alerts come from the Pacific and US National Tsunami Warning Centers and GDACS.
Active tsunami warnings for Costa Rica
All clear - no active tsunami warning for Costa Rica
No tsunami alerts are active anywhere in the world right now. We monitor GDACS and the US National Weather Service continuously and will show any new alert here the moment it is issued. Get instant tsunami alerts with the QuakeMate app.
Recent tsunami bulletins for Costa Rica
No tsunami bulletins have been issued for Costa Rica in the period we hold. That is normal: most coastlines go long stretches without one.
What warning, watch and advisory meanCosta Rica faces the Pacific and/or Atlantic-Caribbean, where offshore megathrust earthquakes can trigger tsunamis. It is monitored by the US/Pacific tsunami warning centers. The strongest recent earthquake near Costa Rica was M 5.0 near OFF COAST OF COSTA RICA.
Use this page to check whether there is a tsunami warning in Costa Rica 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 Costa Rica the moment they happen, the free QuakeMate tsunami & earthquake alert app sends real-time push notifications.
Tsunami alert levels
Three levels, and they do not mean the same thing. Full explanation of tsunami warnings, watches and advisories.
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 Costa Rica: FAQ
Is there a tsunami warning in Costa Rica right now?
No. There is no active tsunami warning for Costa Rica right now, and no tsunami alerts are active anywhere in the world in the feeds QuakeMate tracks (GDACS and the US NWS). This page updates automatically.
Can earthquakes near Costa Rica cause a tsunami?
Costa Rica faces the Pacific and/or Atlantic-Caribbean, where offshore megathrust earthquakes can trigger tsunamis. It is monitored by the US/Pacific tsunami warning centers. Large, shallow offshore earthquakes (roughly M7+) are the main tsunami trigger.
Has there been a tsunami in Costa Rica?
Costa Rica faces the Pacific and/or Atlantic-Caribbean, where offshore megathrust earthquakes can trigger tsunamis. It is monitored by the US/Pacific tsunami warning centers. Historically, tsunamis have affected this region after major offshore earthquakes. This page tracks the live alert status and recent offshore quakes so you can see current tsunami risk for Costa Rica.
What should I do during a tsunami warning in Costa Rica?
If a tsunami warning is issued for Costa Rica, move immediately to high ground or far inland, away from the coast, rivers and harbours, 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 Costa Rica come from?
QuakeMate aggregates the Pacific Tsunami Warning Center, the US National Tsunami Warning Center, and the global GDACS system. Local agencies issue the official guidance.
Is there a tsunami alert app for Costa Rica?
Yes. QuakeMate is a free iOS app that sends real-time tsunami warnings and major-earthquake alerts for Costa Rica, with a live map of offshore activity. Download it at quakemate.app/download.
Other hazards in Costa Rica
Tsunami & earthquake alerts for Costa Rica
QuakeMate sends real-time alerts for major earthquakes and tsunami warnings near you - free on iOS.