# JP Weather Map — Track Japan's Weather Maps

> Track Japan's Weather Maps (iPhone/iPad app by mobazo.)

- Source: https://appshunter.io/ios/app/jp-weather-map/id6785201086 (this page in markdown: same URL + `.md`)
- Developer: [mobazo](https://appshunter.io/developer/386524105)
- Category: Weather, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 6 MB
- Languages: American English
- Released: 2026-07-04
- Data updated: 2026-08-07
- User reviews in markdown: https://appshunter.io/ios/app/jp-weather-map/id6785201086/reviews.md

## What is JP Weather Map?

Rain & Wind Weather Map is a weather forecast map for users whose work or equipment is directly affected by weather—such as construction sites and outdoor operations.

"What will the rain and wind be like at the site?"
"Check cloud/rain movement for solar power."
"How hot will it get during today's work?"
"Plan site work and deliveries days ahead."

View changes in rain, clouds, temperature, wind, and pressure on the map.
Main Features
■ Weather data on the map
Uses latest NOAA GFS global numerical model data, rendered for Japan and surrounding areas.
Displayable elements (switch via top buttons):

Rain: precipitation intensity
Clouds: cloud cover
Temperature: near-surface air temperature
Wind: near-surface wind speed
Pressure: sea-level pressure

■ Nationwide to regional views

Japan (full) / Japan (excl. islands)
Hokkaido, Tohoku, Kanto, Hokuriku, Tokai, Kansai, Chugoku, Shikoku, Kyushu, Okinawa

Zoom in regional views to check around your work site or facility.
■ Time-series animation
Play forecast data continuously for the selected day.

Play/Pause, previous/next, time slider
Auto-stops at the final forecast time

Visualize rain/cloud movement and changes in temperature/wind.
■ Up to 16 days ahead

Up to 5 days (120h): every 1 hour
123h to 384h (16 days): every 3 hours

Current day starts near present time; following days from 00:00. Ideal for short-term decisions and long-term scheduling.
■ Quick date selection
Tap forecast dates at the top to switch days instantly.
Typical Uses

Construction/civil engineering scheduling
Outdoor inspections, maintenance, surveying
Material delivery & heavy equipment planning
Solar power cloud/rain monitoring
Farm work and outdoor events
Heat/wind impact assessment
Travel weather trends

Data Source
Directly fetches GFS 0.25° grid data from NOAA/NCEP NOMADS (no intermediate servers). GFS is a global model suitable for broad patterns and multi-day forecasts.
Important Notes
App data is based on numerical predictions and not official forecasts from the Japan Meteorological Agency.
0.25° resolution may not capture fine local terrain effects or sudden changes. For critical decisions (work, safety, evacuation), always combine with official JMA forecasts, warnings, radar, and local authority information.
Retrieval may be delayed due to data updates, NOAA status, or network conditions.
Check site weather changes with Rain & Wind Weather Map via maps and time animation.


## Version history (last 5 releases)

### 1.4 — 2026-07-22

Introduced disk caching and similar features to avoid NOMADS request rate limits.

### 1.13 — 2026-07-07

release to US and another market

### 1.12 — 2026-07-04

Exchange primary languadge

### 1.1 — 2026-07-02

relese English site

### 1.0 — 2026-07-02

No release notes.

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All apps by mobazo: https://appshunter.io/developer/386524105

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-07.*