Ame kashira?

Ame Kashira? is a Chrome extension that helps you decide if it will rain by displaying high-resolution rain clouds over a map of Japan. It's especially useful for planning in cities and for mountain weather checks.

Key features include a rain cloud overlay on the Japan map, on-map lightning information, and quick access to weather forecasts for any location. It requires internet connectivity for map display and geocoding. Lightning data is provided by the Japan Meteorological Agency's Radar Nowcast – Lightning. Note: the developer assumes no responsibility for any damages resulting from use.