General Weather Questions

• ★ What is the source of the 10-Day, hourly forecast?
• Why is my density altitude calculation different from ForeFlight's?
• How do I understand the issuance and valid times for Graphical AIRMETs (G-AIRMETs)?
• Why can't I see AIRMET/SIGMET/CWAs on the map for Alaska?
• Why do some precipitation forecasts on prog charts have shapes that stop at state lines?
• What do the sky coverage symbols on the Maps page mean?
• How do I update the weather so I have the most recent information?
• Do you present graphical AIRMETs for Hawaii in ForeFlight Mobile?
• Are the radar images within ForeFlight Mobile base or composite reflectivity?
• Why don't I see a ceiling icon for all airports on the Maps page?
• How far behind present are Radar images on the Imagery page?
• How do I troubleshoot a METAR viewing issue on the Airports page?
• Why do I see a false or non-existent radar return?
• What weather products will I have using Internet, ADS-B, or XM?
• How often is the global winds aloft forecast updated?
• Are winds aloft true or magnetic?
• How can I get updated weather in flight?
• What weather data is available in flight if I do not have an in-cockpit data source (e.g.: Internet, XM, or ADS-B)?
• How can I view or determine cloud tops?