GEOG 131 Lecture Notes - Lecture 20: Supercell, Wind Shear, Cumulonimbus Cloud
Document Summary
Single cell thunderstorm: aka air mass thunderstorms or pop up storms, short lived, weak, development. Cumulus stage: updraft forms from warm surface, warm, humid in ow feeds updraft, condensation at lcl, many thunderstorms don"t make it past this stage. Mature stage: occurs when rainfall begins, cooled air and precipitation form a downdraft. Hits ground and forms out ow: if a storm is tall enough, an anvil forms at the tropopause. Temperature inversion: most lightning occurs here. Dissipating stage: updraft dominated by out ow, no more instability, storm looks feathery, less crisp, nishes raining out, life cycle of one to two hours. !1: out ow from one storm can cause an updraft and another storm in front (out ow. Monday, october 16, 2017 boundary: forms conveyor belt of storms. Squall line: line of thunderstorms, commonly along cold front, main threats: high winds, heavy rain; occasional tornado.
