# 3D Amagumo Weather — Check the rain clouds

> 3D weather radar app with early warnings for sudden heavy rain and thunderstorms. (iPhone/iPad app by MTI Ltd..)

- Source: https://appshunter.io/ios/app/3d-amagumo-weather/id1033790896 (this page in markdown: same URL + `.md`)
- Developer: [MTI Ltd.](https://appshunter.io/developer/365850673)
- Category: Weather, Lifestyle
- Price: Free
- Rating: 2.00/5 from 3 App Store ratings · 50 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 205 MB
- Languages: American English, Japanese
- Released: 2020-09-15
- Data updated: 2026-09-04
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/3d-amagumo-weather/id1033790896/reviews.md

## What is 3D Amagumo Weather?

With this app, you can eliminate the worry of "guerrilla heavy rain" and "thunderstorm" at once!
（“Amagumo” is an expression of rain clouds in Japan.）

"It rained a while ago, but suddenly heavy rain started." This kind of phenomenon often occurs in summer in Japan. In Japan, this kind of sudden heavy rain is called "guerrilla heavy rain (Gerira gōu)." 
Accurate forecasts are difficult and cannot be known in advance from the weather forecast.

In this "3D Amagumo Weather" application, the clouds observed by the world's most advanced "phased array weather radar" are displayed in 3D.
This "Phased Array Meteorological Radar" is a radar that can respond to the observation of rapidly developing cumulonimbus clouds that cause localized heavy rain and tornado, among other radars. In other words, you can quickly catch the "guerrilla heavy rain" from the omen!

"3D Amagumo Weather" displays not only rain clouds but also lightning in 3D. You can also check the intensity of rain with clouds and colors on the map. Therefore, you can check not only "guerrilla heavy rain" but also normal rain and typhoon thunderstorm.

"3D Amagumo Weather" is a free app. It catches the forerunner of "guerrilla heavy rain" that could not be predicted accurately until now, and notifies the danger in real time. Please use it for avoiding guerrilla heavy rain not only at music festivals and outdoor events but also at fireworks festivals, festivals, sports events, leisure, sales, etc.

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◆ Features of this app
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① "Free and the world's most advanced"
Experience the world's most advanced weather technology for free. * Japan patent pending, design right acquired

② "3D representation of rain clouds and guerrilla rain, a real sense of crisis"
Until now, 2D rain cloud radar has been the mainstream, but by seeing 3D rain cloud radar, it becomes easier to feel the development of rain clouds in a realistic manner, and it becomes a trigger for action to escape from heavy rain.

③ “For the first time in the world, 10 minutes before guerrilla heavy rain forecast”
By utilizing actual accurate weather observation data, it has become possible to predict difficult guerrilla rains from 10 minutes ago. 

④ "Immediate notice of guerrilla heavy rain"
If you catch the danger of heavy rain, we will send you a PUSH notification immediately. In the past four years of proof experiments, the success rate was 80% or more.

⑤ "Forecasts up to 15 hours ahead"
In addition to the past and present, you can now view forecasts up to 15 hours ahead for free and without registration! (Ground echo only)


By utilizing the world's most advanced "phased array weather radar," the observation time of "rain clouds that cause heavy rain on guerrillas" can be reduced from 5 minutes to 30 minutes. This is the first case in Japan. Not only guerrilla heavy rain, but also heavy rainfall caused by typhoons can be observed, which is a useful technology for future disaster prevention and mitigation.

 
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◆ Precautions when using the app
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1. Since it has the world's most advanced technology, we recommend using iOS 10.0 or later.
2. The data usage range of the phased array weather radar is limited to a part of the Kanto and Kansai areas. Other regions use conventional radar data.

## Key features

- 3D visualization of rain clouds and lightning
- Early forecast for sudden heavy rain (10 minutes ahead)
- Real-time push notifications for danger
- Up to 15-hour ahead forecasts
- Utilizes advanced phased array weather radar

## Recent user reviews (10 of 50)

All indexed reviews: https://appshunter.io/ios/app/3d-amagumo-weather/id1033790896/reviews.md

### 5/5 — 正解な情報

*2026-07-11, version 6.5.1*

範囲が狭い情報が詳細にお知らせしてくれます。新機能の雹アラームが追加された事。

### 1/5 — データ取得中

*2025-09-04, version 6.4.4*

もともと、データ取得に時間が掛かっていたが、見た目の可愛らしさと、予報の正確さで使い続けていた。だがお知らせは来るのに、いよいよデータ取得画面から進まなくなった。これは使用継続できない問題です。対応お願いしたい。

### 4/5 — TEMU広告やめて

*2025-09-03, version 6.4.4*

temuの広告が悪質。
「✖︎」バツマークの画像や卑猥なものがあり不快

### 1/5 — 当たらない

*2025-07-08, version 6.4.1*

雨の通知が来ても
雨が降ってきたためしがない

### 1/5 — ラグ

*2025-07-08*

タイムラグが過ぎる

### 3/5 — 連絡

*2025-06-24*

時刻が合っていません

### 2/5 — Uhmmmm

*2024-09-03*

The time does not match real time. About 10min difference.  Hard to move around with finger.

### 5/5 — 使える

*2024-09-01*

雷ガレージ鳴った同時に雷検知とかくる
ゲリラ豪雨の事前もかなり有効

### 2/5 — 画面が真っ暗なまま…

*2024-09-01, version 6.3.2*

使えていたのにある日突然画面が真っ暗に…
もしかしてiOSアップデートしたからかなぁ？
使えるようになりますように！

### 2/5 — 更新後、予報外れまくり

*2024-08-29*

更新後、AI何ちゃら予測とか色々きますが、大袈裟でハズレまくりです。

ちょっと前までは、本当に信用できる予測だったので残念です。

## Frequently asked questions about 3D Amagumo Weather

### What is 3D Amagumo Weather?

3D Amagumo Weather is a free application that uses advanced 3D weather radar to visualize rain clouds and lightning. It aims to provide early warnings for sudden heavy rainfall, often referred to as 'guerrilla heavy rain' in Japan.

### How accurate are the guerrilla heavy rain forecasts?

The app claims to forecast guerrilla heavy rain up to 10 minutes in advance. In proof experiments over the past four years, the success rate for these notifications has been reported to be 80% or more.

### Does 3D Amagumo Weather have ads?

Yes, 3D Amagumo Weather contains advertisements. As a free application, it is supported by ads to provide its services.

### What devices does 3D Amagumo Weather support?

3D Amagumo Weather is available for iPhone and iPod devices. It is rated for ages 4 and up.

### How far ahead can I see forecasts with 3D Amagumo Weather?

You can view forecasts up to 15 hours ahead for free and without registration. This feature is currently limited to ground echo data.

### What makes the radar technology in 3D Amagumo Weather advanced?

The app utilizes the world's most advanced 'phased array weather radar.' This technology allows for quicker observation of rapidly developing cumulonimbus clouds that cause localized heavy rain and tornadoes, reducing observation time significantly.

### When was 3D Amagumo Weather last updated?

The latest version of 3D Amagumo Weather is 6.4.9, and it was last updated on May 29, 2026. This indicates a consistent update schedule.

### Can 3D Amagumo Weather predict typhoons?

Yes, the app can display heavy rainfall caused by typhoons in 3D. It helps in checking the intensity of rain and understanding the development of storm systems.

## Version history (last 5 releases)

### 6.5.3 — 2026-07-29

Minor improvement

### 6.5.2 — 2026-07-15

- Minor bug fixes

### 6.5.1 — 2026-07-10

- Added a weather posting feature
- Added a “Pray for Sunny Weather” feature
- Added a fireworks feature

### 6.5.0 — 2026-06-22

・Support for hail
・Sky color changes based on the time of day
・Minor bug fixes

### 6.4.9 — 2026-05-29

Change the destination for alerts and advisories to the new one

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All apps by MTI Ltd.: https://appshunter.io/developer/365850673

## Related topics

[rain alertz](https://appshunter.io/ios/topics/rain-alertz)

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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 2026-09-04.*