For weather updates, what type of service can be expected when contacting EFAS?

When contacting EFAS, which stands for Enroute Flight Advisory Service, the type of service you can expect includes information on actual weather and thunderstorm activity. EFAS is designed to provide pilots with real-time weather updates and critical information pertinent to their flight, particularly while enroute. This service helps pilots make informed decisions based on current atmospheric conditions, such as hazardous weather phenomena, thunderstorm occurrences, and updates on any significant changes affecting their flight path.

In contrast, other options like long-range forecasts would not be available through EFAS, as it primarily focuses on up-to-date weather information relevant to pilots' immediate flying conditions. Historical weather data is not something EFAS provides, as pilots are more interested in the current weather affecting their flights rather than past conditions. Additionally, flight path mapping is typically associated with navigation services rather than weather updates, which is the primary focus of EFAS. Thus, the answer highlighting information on current weather and thunderstorm activity aligns perfectly with the services EFAS is equipped to provide.