Tsunami.gov U.S. Tsunami Warning Centers

Tsunami.gov Overview

out of 100 on the desktop and 53 out of 100 on mobile.

Tsunami.gov is the official website of the U.S. Tsunami Warning Centers, providing information on tsunami warnings, advisories, and bulletins. The website is a crucial resource for anyone living near the coastline or anyone who is planning to travel to coastal areas. The website is primarily designed to provide accurate and timely information to the public on the danger of tsunami.

The website has a simple, yet professional, design that is easy to navigate. Users can easily locate the information they need, including news updates, tsunami warnings, and general information about tsunamis. The website also provides important resources, such as evacuation maps, safety tips, and preparedness guides that can be used in the event of a tsunami.

Tsunami.gov is hosted by Akamai Technologies, which is a popular hosting provider known for its fast and reliable network infrastructure. The website is secured with an SSL certificate issued by DigiCert Inc, which ensures that user data is encrypted and secure.

In terms of site performance, Tsunami.gov has room for improvement. According to PageSpeed Insights, the website scores 48 out of 100 on the desktop and 53 out of 100 on mobile. This suggests that the website could benefit from some optimization to improve its load times and overall performance.

However, despite its low PageSpeed Insights scores, the website still manages to attract a significant amount of traffic. According to SimilarWeb, Tsunami.gov receives approximately 1857 unique users per day, with an average of 2785.5 pageviews.

Overall, Tsunami.gov is a family-friendly website that provides important and potentially life-saving information to the public. The website is easy to use, well-designed, and hosted on a reliable network. Although there is room for improvement in terms of site performance, the website still manages to attract a significant amount of traffic and is a crucial resource for anyone living near the coastline.

Tsunami.gov Rank Summary

Global Rank

246,199

Average Load Time

16.76sec

Links In Count

228

Website Value

$52,613

Audience Geography. Where are tsunami.gov visitors located?

Country	Visitors
United States US	51.1%
Canada CA	7.3%
Turkey TR	5.5%
Other	36.1%

Country	Pageviews
United States US	40.8%
Canada CA	4.6%
Turkey TR	3.8%
Other	50.8%

Country	Rank
Canada CA	43223
Turkey TR	46050
United States US	61200

Where do visitors go on tsunami.gov?

Subdomain	Pageviews
tsunami.gov	100%

Subdomain	Pageviews per User
tsunami.gov	1.6

Subdomain	Reach
tsunami.gov	100%

How popular is tsunami.gov?

Period	Global Rank	Global Rank Delta
past 3 months	246199	20815
past month	126280	-606118
past week	115761	-284989

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	372034	24593	1	-8.78%	1.5	-0.667%
30	202046	-847796	23	1000%	1.6	60%
7	199673	-401875	24	400%	1	30%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	212724	19135	3	-8.465%
30	109966	-491370	65	600%
7	98070	-225278	9	300%

Tsunami.gov Website Safety

Overview

Last Updated: 02/04/2026

Overall result - tsunami.gov is safe.

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Last Updated: 03/26/2025

tsunami.gov is safe.

Norton ConnectSafe evaluates tsunami.gov for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 11/16/2016

tsunami.gov is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

tsunami.gov is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

Site Advisor

Last Updated: 02/25/2021

tsunami.gov is safe.

McAfee assesses tsunami.gov for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze tsunami.gov for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/10/2019

tsunami.gov child safety is very good.

The WOT calculates reputation of the tsunami.gov. This reputation system receives ratings from users and information from third-party sources, assesses the tsunami.gov for safety features and confirms, whether tsunami.gov is suitable for children.

SSL Information

SSL Checker Tool

Domain	weather.gov
Issuer Organization	DigiCert Inc
Issuer	DigiCert TLS RSA SHA256 2020 CA1
Algorithm	RSA-SHA256
Valid form	06/21/2022
Expiration	06/23/2023
Signed	Certificate is not self signed
Additional Domains	weather.gov wwwx.wrh.noaa.gov www.wrh.noaa.gov www.weather.gov www.vwt.ncep.noaa.gov www.tsunami.noaa.gov www.tsunami.gov www.srh.noaa.gov www.ripcurrents.noaa.gov www.prh.noaa.gov www.opah.ncep.noaa.gov www.nws.noaa.gov www.nowcoast.noaa.gov www.ndsc.ncep.noaa.gov www.nco.ncep.noaa.gov www.ncep.noaa.gov www.lib.ncep.noaa.gov www.cpcpara.ncep.noaa.gov www.aviationweather.gov water.weather.gov w2.weather.gov w1.weather.gov tsunami.gov test-nomads.ncep.noaa.gov ssd.wrh.noaa.gov rsmc.ncep.noaa.gov ripcurrents.noaa.gov radar3pub.ncep.noaa.gov radar2pub.ncep.noaa.gov radar.weather.gov radar-v2.weather.gov ra4-gifs.weather.gov ptwc.weather.gov products.weather.gov preview.weather.gov preview-water.noaa.gov preview-water.ncep.noaa.gov preview-radar.weather.gov preview-opengeo.ncep.noaa.gov preview-idpgis.ncep.noaa.gov preview-forecast-v3.weather.gov preview-cms.water.noaa.gov preview-api.weather.gov preview-api.water.noaa.gov preview-alerts.weather.gov opengeo.ncep.noaa.gov nws.weather.gov nowcoast.noaa.gov nowcoast.ncep.noaa.gov nomads.weather.gov nomads.ncep.noaa.gov new.nowcoast.noaa.gov mobile.weather.gov marine.weather.gov magpara.ncep.noaa.gov mag.ncep.noaa.gov madis.noaa.gov madis.ncep.noaa.gov madis-data.ncep.noaa.gov iris.ncep.noaa.gov inws.ncep.noaa.gov idpgis.ncep.noaa.gov hysplit.ncep.noaa.gov hads.ncep.noaa.gov graphical.weather.gov gisc-washington.ncep.noaa.gov forecast.weather.gov forecast-v3.weather.gov f1.weather.gov digital.weather.gov cfs.ncep.noaa.gov aviationweather.gov api.weather.gov api-v1.weather.gov amdar.ncep.noaa.gov alerts.weather.gov alerts-v2.weather.gov airquality.weather.gov

Tsunami.gov Rank History

Alexa Rank shows how popular tsunami.gov is in comparison with other sites. The most popular site has Alexa Rank equals 1. If tsunami.gov has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to tsunami.gov and pageviews on tsunami.gov over the past 3 months.

Tsunami.gov Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 20940

ASN Title: Akamai International B.V.

Last Update: 12/25/2025

% This is the RIPE Database query service.
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% See http://www.ripe.net/db/support/db-terms-conditions.pdf

% Note: this output has been filtered.
% To receive output for a database update, use the "-B" flag.

% Information related to 'AS20929 - AS21002'

as-block: AS20929 - AS21002
descr: RIPE NCC ASN block
remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by: RIPE-NCC-HM-MNT
created: 2010-05-11T11:45:45Z
last-modified: 2014-02-24T13:15:17Z
source: RIPE

% Information related to 'AS20940'

% Abuse contact for 'AS20940' is 'abuse@akamai.com'

aut-num: AS20940
as-name: AKAMAI-ASN1
org: ORG-AT1-RIPE
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export-via: AS6777 to AS-ANY EXCEPT (AS7713 OR AS52320) announce AS-AKAMAI
admin-c: NARA1-RIPE
admin-c: NF1714-RIPE
admin-c: JP1944-RIPE
tech-c: NARA1-RIPE
tech-c: NF1714-RIPE
tech-c: JP1944-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: AKAM1-RIPE-MNT
mnt-routes: AKAM1-RIPE-MNT
created: 2002-08-29T13:43:47Z
last-modified: 2018-01-08T16:23:51Z
source: RIPE # Filtered

organisation: ORG-AT1-RIPE
org-name: Akamai International B.V.
org-type: LIR
address: 8 Cambridge Center
address: 02142
address: Cambridge, MA
address: UNITED STATES
phone: +16174444768
fax-no: +16174444768
admin-c: NF1714-RIPE
admin-c: NARA1-RIPE
admin-c: CKAK-RIPE
admin-c: JZ2012-RIPE
admin-c: RM4844-RIPE
admin-c: NB782-RIPE
abuse-c: AR15028-RIPE
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: AKAM1-RIPE-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: AKAM1-RIPE-MNT
created: 2004-04-17T11:18:43Z
last-modified: 2016-10-26T09:16:37Z
source: RIPE # Filtered

role: Network Architecture Role Account
address: Akamai Technologies
address: 8 Cambridge Center
address: Cambridge, MA 02142
phone: +1-617-938-3130
abuse-mailbox: abuse@akamai.com
admin-c: NF1714-RIPE
admin-c: CKAK-RIPE
tech-c: NF1714-RIPE
tech-c: JP1944-RIPE
tech-c: APB15-RIPE
tech-c: CKAK-RIPE
tech-c: TBAK-RIPE
tech-c: NB782-RIPE
tech-c: RM4844-RIPE
tech-c: JZ2012-RIPE
nic-hdl: NARA1-RIPE
mnt-by: AKAM1-RIPE-MNT
created: 2002-03-06T09:02:17Z
last-modified: 2017-07-12T16:18:37Z
source: RIPE # Filtered

person: John Payne
address: 8 Cambridge Center
address: Cambridge
address: MA, 02142
phone: +1 617 444 2562
fax-no: +1 617 444 2562
nic-hdl: JP1944-RIPE
mnt-by: AKAM1-RIPE-MNT
created: 1970-01-01T00:00:00Z
last-modified: 2017-10-30T21:44:25Z
source: RIPE # Filtered

person: Noam Freedman
address: Akamai Technologies
address: 8 Cambridge Center
address: Cambridge, MA 02142
phone: +1-617-938-3130
nic-hdl: NF1714-RIPE
mnt-by: AKAM1-RIPE-MNT
created: 1970-01-01T00:00:00Z
last-modified: 2017-10-30T21:45:05Z
source: RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.91.2 (BLAARKOP)

Tsunami.gov Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: tsunami.gov
Registrar WHOIS Server: whois.nic.gov
Registrar URL: https://get.gov
Updated Date: 2024-01-08T03:29:34Z
Creation Date: 1999-04-12T20:25:46Z
Registry Expiry Date: 2025-09-30T04:00:00Z
Registrar: Cybersecurity and Infrastructure Security Agency
Registrar IANA ID: 8888888
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Status: serverTransferProhibited https://icann.org/epp#serverTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: REDACTED FOR PRIVACY
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: REDACTED FOR PRIVACY
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: REDACTED FOR PRIVACY
Registrant Phone: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Email: REDACTED FOR PRIVACY
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
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Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Fax: REDACTED FOR PRIVACY
Admin Email: REDACTED FOR PRIVACY
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
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Tech Street: REDACTED FOR PRIVACY
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Tech Phone: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Email: REDACTED FOR PRIVACY
Registry Security ID: REDACTED FOR PRIVACY
Security Name: REDACTED FOR PRIVACY
Security Organization: REDACTED FOR PRIVACY
Security Street: REDACTED FOR PRIVACY
Security City: REDACTED FOR PRIVACY
Security State/Province: REDACTED FOR PRIVACY
Security Postal Code: REDACTED FOR PRIVACY
Security Country: REDACTED FOR PRIVACY
Security Phone: REDACTED FOR PRIVACY
Security Email: security@noaa.gov
Name Server: a1-97.akam.net
Name Server: a11-66.akam.net
Name Server: a18-67.akam.net
Name Server: a26-64.akam.net
Name Server: a6-65.akam.net
Name Server: a7-66.akam.net
DNSSEC: signedDelegation
>>> Last update of WHOIS database: 2024-10-12T17:49:39Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
tsunami.gov	23.60.72.92	20

Host	MX Record	Priority	TTL

Host	NS Record	TTL
tsunami.gov	a6-65.akam.net	86400
tsunami.gov	a26-64.akam.net	86400
tsunami.gov	a1-97.akam.net	86400
tsunami.gov	a7-66.akam.net	86400
tsunami.gov	a18-67.akam.net	86400
tsunami.gov	a11-66.akam.net	86400

Host	TXT Record	TTL
tsunami.gov	v=spf1 -all	7200

dns02.woc.noaa.gov
TTL: 86400
Email address: hostmaster.noaa.gov
Serial: 2018061207
Refresh: 10800
Retry: 3600
Expire: 604800
Minimum: 86400

Tsunami.gov HTML Check

HTML Validation Tool

Errors

Bad value “application/xhtml+xml; charset=utf-8” for attribute “content” on element “meta”: The legacy encoding declaration did not start with “text/html;”.

The “scheme” attribute on the “meta” element is obsolete. Use only one scheme per field, or make the scheme declaration part of the value.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

No space between attributes.

Element “hr” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)

Duplicate attribute “target”.

Bad value “20px;” for attribute “height” on element “img”: Expected a digit but saw “p” instead.

Bad value “20px;” for attribute “width” on element “img”: Expected a digit but saw “p” instead.

Bad value “16px;” for attribute “height” on element “img”: Expected a digit but saw “p” instead.

Bad value “16px;” for attribute “width” on element “img”: Expected a digit but saw “p” instead.

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Duplicate ID “quakeImg”.

The “size” attribute on the “hr” element is obsolete. Use CSS instead.

The “align” attribute on the “hr” element is obsolete. Use CSS instead.

Attribute “position” not allowed on element “div” at this point.

The “align” attribute on the “div” element is obsolete. Use CSS instead.

Bad value “mailto:ntwc@noaa.gov?subject=Web site feedback” for attribute “href” on element “a”: Illegal character in query: space is not allowed.

The “for” attribute of the “label” element must refer to a non-hidden form control.

Warnings

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

The first occurrence of ID “quakeImg” was here.

Tsunami.gov Desktop Performance

Last tested: 12/03/2018

Desktop Speed

62%

Leverage browser caching

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Optimize images

Prioritize visible content

Minify JavaScript

Minify CSS

Minify HTML

Enable compression

Desktop Resource Breakdown

Total Resources	139
Number of Hosts	7
Static Resources	98
JavaScript Resources	55
CSS Resources	8

Tsunami.gov Mobile Insights

Last tested: 12/03/2018

Mobile Usability

63%

Use legible font sizes

Size tap targets appropriately

Mobile Speed

48%

Leverage browser caching

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Optimize images

Minify JavaScript

Minify CSS

Minify HTML

Enable compression

Mobile Resource Breakdown

Total Resources	140
Number of Hosts	7
Static Resources	98
JavaScript Resources	55
CSS Resources	8

Tsunami.gov Common Typos

www.tsunami.com
www.tsunami.net
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www.tsunazmi.gov
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www.tsunai.gov
www.tsunani.gov
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www.tsunamo.gov
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www.tsunamoi.gov

Tsunami.gov U.S. Tsunami Warning Centers

Tsunami.gov Overview

Tsunami.gov Rank Summary

Tsunami.gov Website Safety

Tsunami.gov Rank History

Tsunami.gov Hosting Information

Tsunami.gov Domain Registration and Settings

Tsunami.gov HTML Check

Tsunami.gov Desktop Performance

Tsunami.gov Mobile Insights

Tsunami.gov Similar Audits

Tsunami.gov Common Typos