Which chart gives an overall picture of weather across the U.S.?

The Weather Depiction Chart provides an overall picture of weather conditions across the United States. It is specifically designed to give pilots a visual representation of the current weather, including cloud cover, precipitation, and visibility. This chart integrates various types of observational data, offering a comprehensive summary that helps pilots assess weather patterns and conditions over a large area.

In contrast, the Aviation Area Forecast is more focused on providing forecasts for specific flying areas rather than a real-time snapshot. The Terminal Aerodrome Forecast is related to weather conditions at specific airports and is shorter in duration, usually covering just a few hours ahead. The Surface Analysis Chart primarily focuses on the current weather at particular points, detailing features like fronts and pressure systems, but it doesn't offer as broad a view as the Weather Depiction Chart.