What if, wherever you’re living, working or traveling, you could receive an alert before it’s about to rain or snow and when the precipitation is about to end? And it’s pretty accurate, too? ClimaCell, a fledgling weather technology company based in Boston, released a mobile app Monday that provides notifications for exact locations in more than 50 countries. It promises “street-by-street, minute-by-minute short-term forecasts." The app leverages the company’s technology innovations, which are making waves in weather business industries. ClimaCell, founded in 2015, has developed a global network of weather data that marries traditional observations of pressure, temperature, precipitation and...