The Aviation Digital Data Service (ADDS) makes available to the aviation community digital and graphical analyses, forecasts and observations of meteorological variables in the United States. Analyses, forecasts, and...

This Web-based module presents the various types and severity categories of aircraft icing and outlines the main factors, physical processes, and mesoscale environments that combine to create hazardous icing conditions....

The National Centers for Environmental Prediction (NCEP) provide timely, accurate and continually improving worldwide forecast guidance products. They maintain a current database of meteorological and hydrological data,...