EESA09H3 Lecture Notes - Ted Fujita, Ice Core, Funnel Cloud
1 Jul 2013
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Wind essa09 lecture 5: thunderstorms and tornadoes. Caused by surface heating: suburban areas around the gta are getting more warmer than the areas in downtown. Only storm that has thunder and lightning. Large thunderstorms can spawn/turn into tornadoes differs in strength of the wind. Life cycle: relatively short-lived, less than 1 hour, diameter is 1km or less, multi-cell, super-cell: Storm lasts longer: gust front of one storm initiates or induces another storm. Form with strong vertical wind shear (need strong large air masses: surface winds (mt air) from south/southwest, upper level winds (cp air) from north/northwest. Along cold front of a midlatitude cyclone: midlatitude cycle is dying down and at the tail of the cyclone you will see the development of a super-cell thunderstorm. Tornadoes can spawn: midlatitude cyclone super-cell thunderstorm tornado. Storm can last for several hours: location of the dd is far away from the location of the ud.
