ResumoAnalisou-se a ocorrência de eventos severos no Rio Grande do Sul (RS) entre 2004 e 2008, as regiões atingidas por estes e o impacto do evento severo que atingiu o maior número de municípios. Utilizaram-se dados de ocorrência de eventos severos no RS e municípios atingidos por estes, obtidos no banco de dados da Coordenadoria Estadual de Defesa Civil do RS. Os resultados mostraram que: 247 eventos severos atingiram 55,6% dos municípios que compõem o RS; vendaval e granizo foram os eventos severos mais frequentes registrados; Out-Nov-Dez e Jul-Ago-Set foram os trimestres do ano com maior registro de ocorrência e a região mais atingida pelos eventos severos foi a porção norte do Estado. Observou-se ainda que granizo atingiu 47,8% dos municípios do RS afetados por eventos severos, gerou situação de emergência em 70,2% das comunicações e atingiu preferencialmente o noroeste do Estado. Palavras-chave: Desastres naturais; granizo; situação de emergência AbstractIt was analyzed the occurrence of severe events in the Rio Grande do Sul (RS) from 2004 to 2008, the regions affected by them and the impact of severe event that reached the greatest number of municipalities. Data of severe events occurrence and RS municipalities affected by them, obtained from CEDCRS (Coordenadoria Estadual de defesa Civil do RS) database, were used. The results showed that: 247 severe events affected 55,6% of the RS municipalities; windstorm and hail were the RS severe events more frequently registered; the quarters and the RS region most affected by severe events were Oct-Nov-Dec and Jul-Aug-Sep, and the north portion of state, respectively. In addition, hail affected 47,8% of RS municipalities affected by severe events; generated emergence situation in 70,2% of communications, and reached preferentially the northwest of state.
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