What powers jma.go.jp?
Last seen Jun 2026 · 8 technologies across 6 categories
CDN
Amazon CloudFront
since Mar 2025
Amazon S3
since Mar 2025
JavaScript libraries
Load balancers
Amazon ALB
since Sep 2021
PaaS
Amazon Web Services
since Sep 2021
Security
HSTS
since Sep 2022
Web servers
Apache HTTP Server
since Apr 2018
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| japan tsunami warning | #1 | 7,500 |
| japan typhoon | #1 | 1,600 |
| tsunami japonia | #7 | 1,500 |
| tokyo weather | #7 | 1,400 |
| tsunami warning | #45 | 950 |
| tsunami in japan today | #2 | 880 |
| japan | #75 | 860 |
| japan | #31 | 860 |
| japan and typhoon | #3 | 530 |
| people's republic of bangladesh | #32 | 520 |
| people's republic of bangladesh | #32 | 520 |
| people's republic of bangladesh | #32 | 520 |
| japanese tsunami warning | #1 | 300 |
| tokyo typhoon | #1 | 270 |
| japan typhoon tokyo | #1 | 270 |
| tropical prediction center | #33 | 260 |
| japan snowfall | #4 | 220 |
| volcano eruption | #46 | 210 |
| atm pressure | #84 | 190 |
| tsunami watch | #21 | 170 |
| typhoon in japan today | #1 | 160 |
| japan meteorological agency | #2 | 160 |
| japan weather news | #3 | 160 |
| typhoon tokyo | #1 | 130 |
| tohoku earthquake japan | #31 | 130 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 70% phone
- 27% desktop
- 3% tablet
Japan
South Korea
Taiwan
Singapore
Hong Kong SAR China
United States
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
8.61 / 10 · ranked #1,621 of all domains
7,134 referring domains · OpenPageRank
Search traffic
29,500 est. monthly organic visits (US)
7,917 keywords in Google's top 30
Core Web Vitals
| LCP | 2.1 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 2.6 MB · 82 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.data.jma.go.jp | 6 |
| www.jma.go.jp | 6 |
| ds.data.jma.go.jp | 3 |