Why are winds aloft missing when using my Stratus ADS-B?

Currently, ForeFlight Mobile requires that all winds for a selected route be available to show Winds Aloft in the Altitude Advisor.  This information is available on the Internet, however not all ADS-B towers provide wind information for distant locations.  Therefore, ForeFlight gives you the "Winds Aloft Not Included" message.  You should still be able to see Winds Aloft information if you select individual airports along your route of flight.