He says the thickness of the atmosphere basically measures the distance between two points aloft. That distance depends on the air temperature and moisture content. If the atmosphere is warmer and more moist, the thickness is higher. Colder and drier results in a lower thickness. That makes the "thickness" parameter helpful in predicting whether it will rain or snow.
Have a question you want answered on the air? E-mail Michael at firstname.lastname@example.org. "Weather School" airs each Sunday night on FOX 44.
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.