EVENTOS METEOROLÓGICOS ASSOCIADOS AO CICLONE EXPLOSIVO OCORRIDO EM JUNHO DE 2020 E IMPACTOS SOCIOAMBIENTAIS NO ESTADO DE SANTA CATARINA.

Extratropical cyclones are one of the atmospheric systems that cause the most changes in the weather of the regions where they act. In some situations, these systems have a penetration rate of ~24 hPa/24 h, giving them the status of explosive cyclones. Between June and July 2020, one such cyclone appeared between Rio Grande do Sul and Uruguay and rapidly moved to the ocean. Given this context, this study describes the life cycle of the extratropical cyclone and the atmospheric systems associated with it, which caused much environmental and material damage, and the death of at least 12 people in the state of Santa Catarina. Reanalysis data were used to describe the cyclone configuration, while media news and data provided by the state's civil defense were used to describe its impacts. Results showed that the cyclone originated at medium/high levels of the atmosphere and reached a penetration rate of 36 hPa in 24 hours, giving it the characteristic of an explosive cyclone. The cold frontal branch of this system, which had its center over the ocean, acted over Santa Catarina helping to form other damaging meteorological systems in the region. [ABSTRACT FROM AUTHOR]