"Aviation Weather Services is published as a joint venture by the FAA and the NWS. This document supplements the companion manual AC 00-6A, Aviation Weather that deals with weather theories and hazards. This advisory circular, AC 00-45E, explains weather in general and the details of interpreting and using coded weather reports, forecasts, and prognostic weather charts. By National Weather Service, National Oceanic and Atmospheric Administration, U.S. Department of Commerce And Federal Aviation Administration U.S. Department of Transportation"