"Textbook" Supercell Schematic
If one could strip away all trees, hills, buildings, low clouds, intervening precipitation and other obstructions, this would be the ideal storm chaser's view of a supercell. Observations and limited climatological studies have shown that most supercells -- especially in the eastern U.S., instead have heavy-preciptation (HP) structure, where rain and/or hail obscures the view of the wall cloud and possible tornado-producing region. LP (low precipitation) storms, omn the other hand, do not have much, if any, visible precipitation when seen from a distance. However, they may still smack one's vehicle with a nasty surprise of damaging hail.
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