EOSC 114 Lecture Notes - Tornado Watch, Westerlies, Fluid Parcel
Document Summary
Storms: be wary of the main storm hazards. Thunderstorm hazards: lightening, tornadoes, hail, downpours of rain (local flooding, downbursts of air (gust fronts) Hurricane hazards: contain thunderstorms, storm surge/ costal flooding, high waves, coastal erosion, describe the different types of lightning, how they form, and what happens when they strike something. 1-cloud to cloud lightning (intracloud) (ic): occur when the voltage gradient within a cloud or between clouds overcomes the electrical resistance of the air. more common than gc lightening. 2-cloud to ground (cg): charge separation occurs, with positive and negative charges separate in the cloud. Charge separation occurs only in clouds are above the freezing level. less common than ic a. In order to make a spark in the air, it requires 3 billion volts/km. The more volts it has, the further it can travel b. Negative strikes - are more numerous and come from cloud base.
