Disaster Communication Messages: Challenges and Opportunities Based on Brazil'S Experience

31 Pages Posted: 3 Apr 2025

See all articles by Murilo Noli da Fonseca

Murilo Noli da Fonseca

Pontifical Catholic University of Parana

Luciene Pimentel da Silva

Pontifical Catholic University of Parana

Abstract

This research investigates the effectiveness of disaster communication messages in Brazil, with a focus on the structure and content of SMS messages sent out from 2018 to 2023. The Warning Response Model was used for encoding. The analysis reveals that only 1.83% of the 73,701 messages analyzed were complete; that is, they contain all the elements to be effective (source, hazard, location, guidance and time). The results also show that messages about natural hazards achieved the highest scores and that the states of Santa Catarina and Paraná stand out. In contrast, states such as Minas Gerais and Goiás achieved low scores regarding messages about technological risks. In addition, lacking geographical and time specifics, and failing to include details on the potential impacts compromise the effectiveness of the messages. The study highlights that the message length limit of 160 characters is an obstacle to effective communication, which can compromise the population's perception of risk, its adoption of protective actions. The research concludes that optimizing disaster communication messages is crucial to improve disaster response in Brazil, while it recommends using a multichannel system, the continuous training of civil defense agents, and greater community engagement to strengthen resilience.

Keywords: Public warning, Risk communication, Instructional crisis communication, Mobile communication, disaster alert messages

Suggested Citation

Fonseca, Murilo Noli da and Silva, Luciene Pimentel da, Disaster Communication Messages: Challenges and Opportunities Based on Brazil'S Experience. Available at SSRN: https://ssrn.com/abstract=5204459 or http://dx.doi.org/10.2139/ssrn.5204459

Murilo Noli da Fonseca (Contact Author)

Pontifical Catholic University of Parana ( email )

Rua Imaculada Conceicao, 155
Curitiba-Parana, 80215-910
Brazil

Luciene Pimentel da Silva

Pontifical Catholic University of Parana ( email )

Rua Imaculada Conceicao, 155
Curitiba-Parana, 80215-910
Brazil

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