MET-1010 Lecture Notes - Lecture 12: Wall Cloud, Wind Shear, Overshooting Top
17 Apr 2017
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Document Summary
Fields become analysis- a chart that you might look at after it has been corrected to match observations. How does a wall cloud form- some of the rain in the nearby downdraft evaporates as it descends and warms. Once it becomes a gas again, some of this colder air gets ingested into the strong rotating updraft, condensing very quickly near the surface. This is why the wall clouds seems to lower and continues to rotate. Tornadoes form when that vertical tube of rotation stretches all the way down to the surface. Flash floods- a car is the worst place to be. Between cloud, within clouds, or cloud to air. Consists of cloud to cloud surface with cloud overhead or a bolt from the blue clear skies overhead. Heavier particles carry negative charge, lighter particles carry positive charge. Stepped leader is branching down, looking for positive charge.
