N O R T HA M E R I C A

S O U T HA M E R I C A

N O R T HA M E R I C A

S O U T HA M E R I C A

A F R I C A

A S I A

A U S T R A L I A

I N D I A N O C E A N

A T L A N T I C

O C E A N

PA C I F I C O C E A N

A T L A N T I C

O C E A N

PA C I F I C O C E A N

PA C I F I C O C E A N

Indian Ocean Tsunami Warning and Mitigation System

IOTWMS

Indonesian Regional Tsunami ServiceProvider (InaRTSP), Indian Tsunami EarlyWarning Centre (ITEWC), Joint AustralianTsunami Warning Centre (JATWC)

North Eastern Atlantic, Mediterranean and connected seas Tsunami Warning and Mitigation SystemNEAMTWS

Accredited TSPs: Centre d’ Alerte aux Tsunamis (CENALT), Istituto Nazionale di Geo�sica e Vulcanologia (INGV),Kandilli Observatory and Earthquake Research Institute (KOERI), National Observatory of Athens (NOA)Candidate TSP: Instituto Português do Mar e da Atmosfera (IPMA)

Paci�c Tsunami Warning and Mitigation System

PTWS

Northwest Paci�c Tsunami AdvisoryCenter / Japan Meteorological Agency(NWPTAC/JMA)

Paci�c Tsunami Warning Center (PTWC)

Tsunamis and Other Coastal HazardsWarning System for the Caribbean and

Adjacent Regions

CARIBE-EWS

Service provided by Paci�c TsunamiWarning Center (PTWC)

Tsunamis and Other Coastal HazardsWarning System for the Caribbean and

Adjacent Regions

CARIBE-EWS

Service provided by Paci�c TsunamiWarning Center (PTWC)

The services provided by the US National TsunamiWarning Center are outside the framework of theIOC coordinated tsunami warning systems.

This map indicates the area of coverage for each of the four Intergovernmental Coordination Groups for the tsunami warningsystems (CARIBE-EWS, IOTWMS, NEAMTWS, PTWS) as well as the Areas of Service of the Tsunami Service Providers (TSP). The lighterand narrower shading indicates areas in which services are under development.

This map is schematic and does not re�ect exact boundaries, nor are all islands plotted or highlighted. The designations employedon this map do not imply the expression of any opinion whatsoever on the part of the Secretariats of UNESCO and IOC concerning thelegal status of any country or territory, or its authorities, or concerning the delimitation of the frontiers of any country or territory.

Produced by the Intergovernmental Oceanographic Commission of UNESCO.Date: 18 February 2018

For more information: http://www.ioc-tsunami.org/

Existing Services of the Global Tsunami Warning System