Definition
Printed or digital maps that display observed or forecast weather information across a geographic area, used by pilots for preflight planning and inflight decision-making. Common examples include surface analysis charts, weather depiction charts, radar summary charts, and significant weather prognostic charts, each showing different elements such as fronts, pressure systems, precipitation, cloud cover, or hazardous weather.
Plain English
Maps that show what the weather is doing, or is expected to do, over a region. Different charts show different things — pressure systems, fronts, precipitation, clouds, or forecast hazards.
Context Anchor
Pilots use weather charts during preflight planning and weather briefings, especially when checking the route, destination, and possible alternate airports.
Why Pilots Care
They let pilots spot developing hazards such as fronts or low ceilings across a wide area and decide whether conditions support safe flight.
Intuition Check
Do not think of weather charts as general weather pictures for casual use. In aviation, they are planning tools that show weather information in a form meant to support flight decisions.
Example Sentence 1
During preflight planning, the pilot reviewed several weather charts to check for fronts and areas of precipitation along the route.
Example Sentence 2
In the briefing room the instructor used the upper-air weather charts to explain how the jet stream would affect headwinds on the return leg.