Indeed. The West winds are coming from the west and are heading east. Also, there are Eastern winds that are coming from the east and are heading west. Even if the system is displaying West winds, these can change their course for a short period of time, or the behavior that you encounter can be generated by an internal error of the application or by a communication error with the server. To make sure that you don't encounter this behavior anymore, make sure that you keep your application up-to-date.