Weather concepts all adapted from the Air Force Weather Document, AFWA/TN-98/002, Meteorological Techniques.
Intro
http://scott.k12.va.us/martha2/vastudiestests.htm
cloudquestion
http://imgs.sfgate.com/blogs/images/sfgate/ybenjamin/2009/09/02/question-cloud.jpg
visibility
http://www.wrh.noaa.gov/hnx/newslet/summer03/fog.jpg
sandstorm
http://www.marshu.com/images-website/collection-pictures/iraq-sand-storm/iraq-sand-storm-5.jpg
heatstroke
http://s4.hubimg.com/u/1057419_f520.jpg
turbulence
http://www.nytimes.com/2007/06/12/business/12turbulence.html
models
http://www.hko.gov.hk/aviat/amt_e/rsm_sample.jpg
Forecasting Obstructions to Vision page
Puempel, H. (2010). Quantitative criteria for “sandstorm” and “duststorm”. Aerodrome meteorological observation and forecast study group. Retreived August 11, 2011 from http://www2.icao.int/en/anb/met-aim/met/amofsg/AMOFSG%20Meeting%20Material/SN%2012.pdf
Shamal images
http://en.wikipedia.org/wiki/Shamal_(wind)