Telemedicine allows doctors to consult with patients and conduct examinations remotely using audiovisual technology. It commonly involves health professionals discussing cases over the phone, using satellites for real-time discussions or remote surgery between countries, or setting up early warning systems for potential disease outbreaks in cities through the storage and distribution of medical data. Weather forecasting uses Doppler radar to detect reflections of microwave signals, weather satellites to capture images, and supercomputers running algorithms to predict weather, though inaccuracies can occur since small differences in initial atmospheric conditions can lead to significantly different weather a few days later.