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About this app

With this app, you can eliminate the worry of "guerrilla rainstorms and thunderstorms" at once! The official app for the Sumida River Fireworks Festival.
3D display of clouds observed by the world's most advanced "phased array weather radar".
In addition, by implementing the 3D display of the conventional radar, the rain cloud watch can be used by people in areas where there is no phased array weather radar.

◆ There are many media publication results such as TV broadcasting and GIGAZINE
◆ Featured in "TV Asahi Super J Channel", "NHK Weekly Maru-Knowledge News", "Asahi Shimbun Evening Edition", and "Me-Tele Dodesuka!"
◆ The hit rate of heavy rain push notification is 80% or more!
◆ Born through joint research with the National Institute of Information and Communications Technology (NICT) and RIKEN
◆ Customer's voice "It's very good. I'm saved because I work a lot by bicycle" (female in her 50s), "It's easy to intuitively feel the danger of guerrilla rainstorms" (male in her 40s)

"3D Nimbus Watch" is a free app that can catch the harbinger of "guerrilla rainstorms" that could not be predicted accurately and notify the danger in real time. It is an epoch-making app that can avoid guerrilla rainstorms in all scenes such as fireworks festivals, festivals, leisure, sales, as well as music festivals and outdoor events.
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◆ Aiming to become the standard for future weather forecasts with customer feedback
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-Added the OFF function of the lightning strike mark, making it easier to check the ground echo! (2020/9/17)
・ You can now receive push notifications in English! (2020/9/17)
・ In some areas of Kanto, you can now check forecasts up to 10 minutes ahead! (2020/7/29)
-You can now save the radar screen image to your device! (2020/6/30)
・ Some functions of the app are now available in English! We will continue to support English in stages. (2020/5/19)
-You can now check the weather forecast for today and tomorrow within the app! (2020/1/29)
・ Introduced 3D display of lightning strikes and lightning strike push notifications that are likely to occur with guerrilla rainstorms! (2019/8/15).
・ User participation type function "Sky Watch" experiment started! We will utilize your posts to improve the accuracy of weather forecasts, which will lead to disaster prevention and mitigation. (2019/2/13)
・ Based on the requests from everyone for the app, we have made it possible to use the rain cloud watch nationwide (* excluding remote islands and some areas) (2018/7/3).
・ We have received many requests for the introduction of 3D rain cloud forecasting and "I want you to deploy phased array weather radar nationwide." Currently, there are only 6 world-leading weather radars "Phaseed Array Weather Radar" in Japan (Suita, Kobe, Okinawa, Chiba, Tsukuba, Saitama), and it is very painful that we cannot deliver them to everyone in Japan. ..
・ Thank you for your continued support. The voice of "Good luck!" From everyone is very encouraging. We will continue to do our best to meet your expectations. We hope that we can work together to create a standard for future weather forecasts. We look forward to your comments on in-app surveys and reviews.
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◆ This app is amazing!
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① "Free and the most advanced in the world"
Experience the world's most advanced weather technology for free. * Patent pending / design right acquired

② "Realistic sense of crisis by expressing rain clouds and guerrilla rainstorms in 3D"
Until now, rain cloud radar in 3D has been the mainstream, but by seeing 3D rain cloud radar, it becomes easier to feel the development of rain clouds realistically, and it will be an opportunity to avoid heavy rain.

③ "World's first guerrilla rainstorm 10 minutes ago forecast"
Using actual accurate meteorological observation data, it is now possible to predict unpredictable "guerrilla rainstorms" from 10 minutes ago. This is the result of joint research with the data assimilation team of RIKEN.

④ "Immediately notify the harbinger of guerrilla rainstorms"
As soon as you catch the danger of a guerrilla rainstorm, we will send you a PUSH notification. In the proof experiment for the past 4 years, the hit rate was 80% or more.

By utilizing the world's most advanced "phased array weather radar", it is now possible to observe "rain clouds that cause guerrilla rainstorms" in 30 seconds, which used to take more than 5 minutes. This is the first case in Japan. Not only guerrilla rainstorms but also heavy rains 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 is equipped with the world's most advanced technology, we recommend using it with Android 5.0 or higher.
2. The data usage range of the phased array weather radar is limited to some areas in Kanto and Kansai. Other regions use conventional radar data.
Updated on
Sep 14, 2023

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