The University of Illinois Weather Project is a first rate compendium of explanations,
graphics, animations and resources to explain important meteorological events and concepts. Highly recommended for students in any weather course and
anyone wishing to understand the physics behind weather phenomena.
Current weather data and maps are available from the University of Wisconsin site.
You can choose from a variety of either surface or upper air maps. From the main page, click on "current observation maps", then on
either "surface" or "upper air maps."