What is the purpose of a prognostic chart?

The purpose of a prognostic chart is to predict future weather conditions. Prognostic charts are designed to provide meteorologists with information about expected changes in the atmosphere over time. They utilize various data sources, including atmospheric pressure systems, temperature patterns, humidity levels, and wind movements, to create visual depictions that forecast weather changes. By interpreting these charts, meteorologists can anticipate weather phenomena such as precipitation, storms, or temperature shifts, enabling them to make informed weather predictions for specific locations and timeframes.

The other options focus on different aspects of weather analysis. Recording past weather events pertains to climatology and historical data. Measuring current visibility is related to real-time assessments rather than forecasting. Analyzing storm systems includes understanding current weather but does not specifically predict future conditions.