TIME RUSH EVOLUTION AND ELECTRIC ACTIVITY OF A STORM WITH SEVERE WEATHER EVENT
DOI:
https://doi.org/10.5902/2179460X20291Keywords:
Convective systems. Radar. Lightining. São Paulo.Abstract
This study aimed to analyze the spatial and temporal evolution of rainfall and electrification of a Convective System, which occured on March 12, 2012 over the city of São Paulo, during the time interval from 1830 to 1945 UTC. An analysis was made of the behavior of the three dimensional structure of radar reflectivity and lightning type Intra-cloud (IN) and Cloud-Solo (NS), based on two lightning detection networks installed in the region during the RAIN Project, in order to correlate the occurrence of severe weather to the evolution of cloud ascending current, precipitation formation and electrification of this storm. It was observed by the reflectivity of the FCTH Radar images that, at times, the SC showed high values of reflectivity, with over 70 dBZ and indicating the presence of hail within the system. Through the behavior of electrical discharges, it is also noted that these accompany the displacement and intensity of the updraft and through the lightning jump, it is possible to detect in advance whether if the storm is intensifying or not. If so, this storm could possibly become a severe weather and cause serious damage to society.Downloads
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