NCAR-RAP Real-time Aircraft Icing Data and Products Page - National

Weather data provided by the National Center for Atmospheric Research's Research Applications Program in support of NASA-Lewis Research Center flights into freezing drizzle, freezing rain and other hazardous icing conditions.

NCAR is not normally a real-time weather data supplier. Data outages are to be expected! All aircraft icing diagnoses and forecasts shown on this page are EXPERIMENTAL. Pilots and aviation forecasters are URGED to check the OFFICIAL ICING FORECASTS avialable from the Aviation Weather Center.

This page and most of the data on it is maintained by Ben C. Bernstein. Satellite data, model soundings and various other data provided by Greg Thompson.


Regional aviation/icing web pages for Cleveland, Denver, and Ottawa.

National scale observations


National scale icing products - EXPERIMENTAL!!