National Snow and Ice Data Center
Nsidc: All About Snow
A beautiful snow scene awaits you at this site as well as cold facts about snow, Q & As, a snow glossary to inform you on such things as the difference between a blizzard and a squall, and information on avalanches and blizzards.
National Snow and Ice Data Center
Nsidc: Avalanches
This site is provided for by the National Snow and Ice Data Center. Who should be aware of a possible avalanches? When and where do they occur? What is the anatomy of an avalanche? Find the answers to these questions and a lot more!
PBS
Nova: Snow Sense
This reading describes numerous characteristics of snowpack that has a potential to cause an avalanche. It also has suggestions for rescue.