Weather radar map shows the location of precipitation, its type (rain, snow, and ice) and its recent movement to help you plan your day. Simulated radar displayed over oceans, Central and South American countries is generated from satellite data, which is provided up to the current time and may not be updated as frequently as other regions.

The weather radar (Tokyo) shows where it is currently raining or snowing. The radar map is updated every 5 minutes with a new radar observation. The different colours indicate the intensity of rainfall or snowfall.

Accordingly, weather radars need to be located in high places such as on top of mountains or steel towers. As Japan is a mountainous country, radar observation ranges depend on geographic location. In consideration of this situation, JMA’s weather radars are strategically placed to provide coverage for most of Japan and its vicinity.

The radar map is updated every 5 minutes with a new radar observation. The different colours indicate the intensity of rainfall or snowfall. Light blue indicates drizzle, blue a medium intensity, and red and yellow indicate very strong precipitation, usually associated with thunderstorms.