If in Chicago, Illinois, describe the atmospheric conditions over a 48....? -

If in Chicago, Illinois, describe the atmospheric conditions over a 48hour period in which a thunderstorm occurred in the 24th hour. Whatwere the atmospheric conditions like in the 24 hours before, during,and after the storm? Consider all the main types of weather variable aswell as air masses.

This looks much more like a homework question from high school or collage then it does a normal question. If this really is a normal question then you should try the archives from www.weather.com or www.weatherunderground.com (www.wunderground.com). I feel sure that they will have to information that you need.

Try asking in the Weather section of the Science Mathematics category.