All  About Lightning
http://www.crh.noaa.gov/mkx/owlie/anvil.htm

Weather Eye
http://weathereye.kgan.com/cadet/sunnystory.html

Web Weather for Kids
http://www.ucar.edu/educ_outreach/webweather/

Wild Weather Page for Kids
http://www.wildwildweather.com/

Winter Storms
http://www.crh.noaa.gov/mkx/owlie/winter.htm