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Sources of Tsunamis information

The NWS and its partners offer several alternative methods to subscribe and receive tsunami event notifications messages, which are described below.

Third-party sources of tsunami information may be found at weather.gov/subscribe.

DISCLAIMER: NWS does not endorse the non-NWS services or providers listed on this page. Information presented below is believed to be correct at the time of posting. Any fee or payment required for service is the responsibility of the consumer. The NWS recommends using multiple sources of information to validate the information that is received.

NOTE: Unless otherwise indicated, all links below take you outside this federal government website. You way wish to review the privacy notices on these sites as their practices may differ from ours.

If you are a provider of alerting services that specifically provide tsunami information and want your service included below, please contact nws.subscribe@noaa.gov.

We encourage the public to subscribe to notifications of tsunami messages sent by the NOAA tsunami warning centers: Pacific Tsunami Warning Center (PTWC) or National Tsunami Warning Center (NTWC). To determine whether you should subscribe to alerts from PTWC or NTWC, please refer to the areas of responsibility served by each tsunami warning center.

There are several methods to subscribe and receive tsunami event notifications:

RSS (Really Simple Syndication):

Really Simple Syndication (RSS) is an easy way for you to be alerted when content that interests you appears on your favorite websites. Instead of visiting a website to browse for new articles and features, RSS automatically notifies you when something new is posted online through your news reader of choice. NOAA offers the following tsunami-related RSS feeds:

Email:
  1. The International Tsunami Information Center (ITIC) provides a public email subscription service for all PTWC international tsunami messages and all NTWC messages for events greater than magnitude 6.5.
  2. Nixle provides emergency alerts as an email and SMS subscription service for residents of Honolulu and Hawaii counties.
  3. The USGS Earthquake Notification Service (ENS) allows users to receive custom automated earthquake alerts via email or SMS.
  4. Email subscription options from other third parties are listed on

SMS Text messages:

  1. International tsunami messages from PTWC are available via SMS (text message) on mobile phones through RANET. RANET is only available to emergency managers in select Pacific, Asian, and African countries.
  2. Nixle provides emergency alerts as an email and SMS subscription service for residents of Honolulu and Hawaii counties.
  3. The USGS Earthquake Notification Service (ENS) allows users to receive custom automated earthquake alerts via email or SMS.
  4. There are also various RSS-to-SMS, Email-to-SMS, and Twitter-to-SMS services on the Internet that allow users to receive SMS alerts. For example, the NTWC Twitter feed and the PTWC Twitter feed can be used to receive text messages. In the U.S. you can send a text message to 40404 with 'follow NWS_NTWC' for NTWC messages, and 'follow NWS_PTWC' for PTWC messages. For more details on Twitter and SMS, please click the Twitter SMS help page. NOTE: Not all countries/carriers use 40404 - please refer to the Twitter short or long code page.
  5. SMS subscription options from other third parties are listed on

Social Media:

You can follow and interact with NOAA tsunami warning centers on popular social media networks:

CAPv1.2 (Common Alerting Protocol):

NTWC generates Common Alerting Protocol (CAP) documents for events. The CAP document is available at: http://ntwc.arh.noaa.gov/events/xml/PAAQCAP.xml

The CAP tsunami profile (CAP-TSU), is documented at: http://ntwc.arh.noaa.gov//?page=cap

For Emergency Managers, NWS partners, and other Government Agencies:

InteractiveNWS (iNWS) is the home of new mobile and desktop innovations of the National Weather Service for NWS core partners (emergency management community, government partners, and electronic media).. This application suite allows NWS partners to receive National Weather Service products in new and innovative ways, such as text messaging and mobile-enabled webpages. You can register for the receiving NWS products using the following URL:

PLEASE NOTE: iNWS is intended for members of community emergency planning and response management (i.e. emergency managers, law enforcement, fire and emergency responders, transportation and safety managers, public officials), Skywarn Net Control operators, government partners of NWS offices, and members of the electronic media.
Do not register if you do not fit this description.

National Weather Service Systems:

Disclaimer: Timely delivery of data and products from this list server through the Internet is not guaranteed. Official National Weather Service dissemination systems which can provide timely delivery of data and products include:

Other Federal Systems:


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