What information is provided at the bottom of a prog chart?

The information at the bottom of a prog chart includes criteria for Instrument Flight Rules (IFR) and Marginal Visual Flight Rules (MVFR) conditions. This is crucial for pilots as it helps them assess the expected weather conditions across a specific area, particularly for planning flight routes and making go/no-go decisions.

Understanding IFR and MVFR criteria is essential for maintaining safety during flight operations. IFR conditions imply low visibility and cloud cover that make visual navigation difficult, while MVFR conditions refer to marginal visibility that allows for some visual navigation but still requires caution. By presenting this information clearly, a prog chart helps pilots gauge the weather’s impact on their potential flight plans and operate within safety regulations.

The other options refer to useful but different types of information that are not typically situated at the bottom of a prog chart. Current air traffic advisories are found in NOTAMs or air traffic control communications, jet stream movement is often depicted elsewhere in weather maps, and predictions from pilot weather reports may be accessible through different sources, but they are not displayed in the bottom section of a prog chart.