Abstract: A weather briefing system that may be used in the cockpit to provide near real-time graphic and text weather information. Weather information and pilot reports are fed to the cockpit from, e.g., a satellite in geosynchronous orbit. Once delivered to the aircraft, the system processes the data stream and formats it for delivery to an end user device. The data is collected from an extensive network of sources. The end user device may be a portable electronic flight bag (EFB), panel-mounted display (MFD), or similar device programmed to display the formatted data. The system provides timely and accurate weather information to pilots of all types of aircraft. This information may be used for pre-flight planning and in-flight decision-making.